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| 1 | Overexpression of the maize GRF10, an endogenous truncated growth-regulating factor protein, leads to reduction in leaf size and plant height显示文摘It has long been thought that growth‐regulating factors(GRFs) gene family members act as transcriptional activators to play important roles in multiple plant developmental processes. However, the recent characterization of Arabidopsis GRF7 showed that it functions as a transcriptional repressor of osmotic stress‐responsive genes. This highlights the complex and diverse mechanisms by which different GRF members use to take action. In this study, the maize(Zea mays L.) GRF10 was functionally characterized to improve this concept. The deduced ZmGRF10 protein retains the N‐terminal QLQ and WRC domains, the characteristic regions as protein‐interacting and DNA‐binding domains, respectively. However,it lacks nearly the entire C‐terminal domain, the regions executing transactivation activity. Consistently, ZmGRF10 protein maintains the ability to interact with GRF‐interacting factors(GIFs) proteins, but lacks transactivation activity.Overexpression of ZmGRF10 in maize led to a reduction in leaf size and plant height through decreasing cell proliferation,whereas the yield‐related traits were not affected. Transcriptome analysis revealed that multiple biological pathways were affected by ZmGRF10 overexpression, including a few transcriptional regulatory genes, which have been demonstrated to have important roles in controlling plant growth and development. We propose that ZmGRF10 aids in fine‐tuning the homeostasis of the GRF‐GIF complex in the regulation of cell proliferation. | Lei Wu Dengfeng Zhang Ming Xue Jianjun Qian Yan He Shoucai Wang | 2014 | Journal of Integrative Plant Biology2014，56，11： | 31 |
| 2 | A Mitochondria-Targeted PPR Protein Restores pol Cytoplasmic Male Sterility by Reducing orF224 Transcript Levels in Oilseed Rape显示文摘 | Liu, Zhi Yang, Zonghui Wang, Xiang Li, Kaidi An, Hong Liu, Jie Yang, Guangsheng Fu, Tingdong Yi, Bin Hong, Dengfeng | 2016 | Molecular Plant2016，9，7： | 14 |
| 3 | Effect of Root Architecture on Structural Stability and Erodibility of Topsoils during Concentrated Flow in Hilly Loess Plateau显示文摘Traditional vegetation techniques for the control of concentrated flow erosion are widely recognized, whereas only a few studies have experimentally investigated the impacts of belowground roots on the erodibility of topsoils in semi-arid areas. To quantify the effects of root architectures on soil erodibility and its relevant structural properties, simulated flow experiments were conducted at six-week intervals from 18 July to 20 October in 2012 in the hilly Loess Plateau. Five treatments were: 1) bare(control), 2) purple alfalfa(Medicago sativa), representing tap roots(T), 3) switchgrass(Panicum virgatum), representing fibrous roots(F), 4) purple alfalfa and switchgrass, representing both tap and fibrous roots(T + F), and 5) natural recovery(N). For each treatment, soil structural properties and root characteristics were measured at an interval of six weeks. Soil anti-scouribility was calculated. Results showed that grass planting slightly reduced soil bulk density, but increased soil aggregate content by 19.1%, 10.6%, 28.5%, and 41.2% in the treatments T, F, T + F, and N, respectively. Soil shear strength(cohesion and angle of internal friction(φ)) significantly increased after the grass was planted. As roots grew, soil cohesion increased by 115.2%–135.5%, while soil disintegration rate decreased by 39.0%–58.1% in the 21 th week compared with the recorded value in the 9th week. Meanwhile, root density and root surface area density increased by 64.0%–104.7% and 75.9%–157.1%, respectively. No significant differences in soil anti-scouribility were observed between the treatments of T and F or of T + F and N, but the treatments of T + F and N performed more effectively than T or F treatment alone in retarding concentrated flow. Soil aggregation and root surface-area density explained the observed soil anti-scouribility during concentrated flow well for the different treatments. This result proved that the restoration of natural vegetation might be the most appropriate strategy in soil reinforcement in the hilly Loess Plateau. | LI Qiang LIU Guobin ZHANG Zheng TUO Dengfeng XU Mingxiang | 2015 | Chinese Geographical Science2015，25，6： | 13 |
| 4 | Electronic Skin from High-Throughput Fabrication of Intrinsically Stretchable Lead Zirconate Titanate Elastomer显示文摘Electronic skin made of thin,soft,stretchable devices that can mimic the human skin and reconstruct the tactile sensation and perception offers great opportunities for prosthesis sensing,robotics controlling,and human-machine interfaces.Advanced materials and mechanics engineering of thin film devices has proven to be an efficient route to enable and enhance flexibility and stretchability of various electronic skins;however,the density of devices is still low owing to the limitation in existing fabrication techniques.Here,we report a high-throughput one-step process to fabricate large tactile sensing arrays with a sensor density of 25 sensors/cm^(2) for electronic skin,where the sensors are based on intrinsically stretchable piezoelectric lead zirconate titanate(PZT)elastomer.The PZT elastomer sensor arrays with great uniformity and passive-driven manner enable highresolution tactile sensing,simplify the data acquisition process,and lower the manufacturing cost.The high-throughput fabrication process provides a general platform for integrating intrinsically stretchable materials into large area,high device density soft electronics for the next-generation electronic skin. | Yiming Liu Huanxi Zheng Ling Zhao Shiyuan Liu Kuanming Yao Dengfeng Li Chunki Yiu Shenghan Gao Raudel Avila Pakpong Chirarattananon Lingqian Chang Zuankai Wang Xian Huang Zhaoqian Xie Zhengbao Yang Xinge Yu | 2020 | Research2020，，1： | 11 |
| 5 | Behavior of phenol adsorption on thermal modified activated carbon显示文摘Adsorption process is acknowledged as an effective option for phenolic wastewater treatment. In this work, the activated carbon(AC) samples after thermal modification were prepared by using muffle furnace. The phenol adsorption kinetics and equilibrium measurements were carried out under static conditions at temperature ranging from 25 to 55 °C. The test results show that the thermal modification can enhance phenol adsorption on AC samples. The porous structure and surface chemistry analyses indicate that the decay in pore morphology and decrease of total oxygen-containing functional groups are found for the thermal modified AC samples. Thus, it can be further inferred that the decrease of total oxygen-containing functional groups on the modified AC samples is the main reason for the enhanced phenol adsorption capacity. For both the raw sample and the optimum modified AC sample at 900 °C, the pseudo-second order kinetics and Langmuir models are found to fit the experimental data very well. The maximum phenol adsorption capacity of the optimum modified AC sample can reach144.93 mg·g-1which is higher than that of the raw sample, i.e. 119.53 mg·g-1. Adsorption thermodynamics analysis confirms that the phenol adsorption on the optimum modified AC sample is an exothermic process and mainly via physical adsorption. | Dengfeng Zhang Peili Huo Wei Liu | 2016 | Chinese Journal of Chemical Engineering2016，24，4： | 11 |
| 6 | Tread Wear and Footprint Geometrical Characters of Truck Bus Radial Tires显示文摘Wear and mileage performance are the foremost performances for truck bus radial (TBR) tires. There are a lot of researches about the tire wear performance as well as the contact patch phenomenon by using finite element analysis (FEA) method or testing. But there is little published data on the correlations between the footprint geometry and the tread wear performance of tires. In this paper, an experiment on tire-ground performance of TBR tires is carried out by using Tekscan. The real-time changes of contact-area pressure distribution that occurred during the process of continuous load and unload are recorded. Three types of tires that act differently in behavior under normal usage are analyzed. A new method of researching in tire tread wear, which focuses on the geometrical characters of the footprint, is put forward. The experimental results of the three tires are described by using footprint geometrical characters. On the basis of studying the changing laws of footprint geometrical characters during the loading process and considering consumer survey and factory feedback information, the correlations between the geometrical character of footprints and tread destruction form are built. The analyzed results show that a greater contact area coefficient and a steady coefficient of contact result in a better wear performance for TBR tires. The footprint-shape coefficient changing laws in the process of loading are found to have a very good coincidence with the tread wear of the three types of tires. Tires with a smaller footprint-shape coefficient are likely to have an average tread wear while avoiding the shoulder wear first. The proposed research provides a new solution to predict tire-ground performance at the point of footprint and several useful references for improving tire design. | LIANG Chen WANG Guolin AN Dengfeng MA Yinwei | 2013 | Chinese Journal of Mechanical Engineering2013，26，3： | 11 |
| 7 | Optimization of rice wine fermentation process based on the simultaneous saccharification and fermentation kinetic model显示文摘Chinese rice wine making is a typical simultaneous saccharification and fermentation(SSF) process.During the fermentation process,temperature is one of the key parameters which decide the quality of Chinese rice wine.To optimize the SSF process for Chinese rice wine brewing,the effects of temperature on the kinetic parameters of yeast growth and ethanol production at various temperatures were determined in batch cultures using a mathematical model.The kinetic parameters as a function of temperature were evaluated using the software Origin8.0.Combing these functions with the mathematical model,an appropriate form of the model equations for the SSF considering the effects of temperature were developed.The kinetic parameters were found to fit the experimental data satisfactorily with the developed temperature-dependent model.The temperature profile for maximizing the ethanol production for rice wine fermentation was determined by genetic algorithm.The optimum temperature profile began at a low temperature of 26 °C up to 30 h.The operating temperature increased rapidly to 31.9 °C,and then decreased slowly to 18 °C at 65 h.Thereafter,the temperature was maintained at18 °C until the end of fermentation.A maximum ethanol production of 89.3 g·L^(-1)was attained.Conceivably,our model would facilitate the improvement of Chinese rice wine production at the industrial scale. | Dengfeng Liu Hongtao Zhang Chi-Chung Lin Baoguo Xu | 2016 | Chinese Journal of Chemical Engineering2016，24，10： | 10 |
| 8 | Improving school physical education to increase physical activity and promote healthy growth of Chinese school-aged children Time for action显示文摘Throughout its more than 5000-year history,China has a long tradition of encouraging active engagement in physical and sport activities.1,2This enduring tradition,however,has been facing some major headwinds as China continues to experience demographic and environmental changes related to aging,urbanization,and lifestyle shifts.3-5Mounting evidence indicates increasing levels of sedentary behaviors。 | Dengfeng Wang | 2017 | Journal of Sport and Health Science2017，6，4： | 9 |
| 9 | Two New Methods for Multiattribute Decision Makings with Information Partially Known | LI Dengfeng Department of Basics, Dalian Naval Academy, Dalian 116018,Liaoning,China | 1998 | Systems Science and Systems Engineering1998，8，1： | 9 |
| 10 | Formation of coherent, core-shelled nano-particles in dilute Al-Sc-Zr alloys from the first-principles显示文摘We present a systematic first-principles based study on the formation of coherent L12-phase nanoparticles in dilute Al-Sc-Zr alloys.Bulk structures and properties,solute substitution,interface formation energies,and interfacial coherent strains are all calculated.Nucleation modeling and relevant energetic calculations are performed on various possible structures of L12-phase nano-precipitates,i.e.individual L12-Al3Sc and L12-Al3Zr,homogeneous L12-Al3(ScxZr1-x)and the core-shelled L12-Al3Sc(Al3Zr)and L12-Al3Zr(Al3Sc).The following insights are obtained.Matrix-dissolved Sc or Zr strongly prefers to substitute the X sublattice sites in L12-Al3X(X=Zr or Sc),while the inter-substitution between L12-Al3Sc and Al3Zr is only weakly feasible.The cube-on-cube orientation with the(100)/(100)contacting facets is the most energy favored for the Al/Al3Sc(L12),Al/Al3Zr(L12)and Al3Sc(L12)/Al3Zr(L12)interfaces.All these interfaces are highly coherent,with fairly low formation energy.And particularly,the Al3Sc(L12)/Al3Zr(L12)interface has essentially zero formation energy.Ternary L12-Al3(ScxZr1-x)precipitates tend to form a Al3Sc-based core and Al3Zr-based shell structure,with a relatively sharp inner interface of Al3Sc(L12)/Al3Zr(L12).This core-shelled structure becomes energetically more favorable for the particle size R>1–2 nm.The potential influence of the Sc/Zr ratio and temperature on the relative stabilities of L12-phases in Al is also evaluated and discussed. | Chaomin Zhang Yong Jiang Fuhua Cao Tao Hu Yiren Wang Dengfeng Yin | 2019 | Journal of Materials Science & Technology2019，35，5： | 8 |
| 11 | Timing of carbonatite-hosted U-polymetallic mineralization in the supergiant Huayangchuan deposit,Qinling Orogen:Constraints from titanite U-Pb and molybdenite Re-Os dating显示文摘The newly-discovered supergiant Huayangchuan uranium(U)-polymetallic(Sr,Se,REEs,Ba,Nb and Pb)deposit is located in the Qinling Orogen,central China.The deposit underwent multistage mineralization,with the main carbonatite ore stage being the most important for the U,Nb,REE,Sr and Ba endowments.According to the mineral assemblages,the main carbonatite ore stage can be divided into three substages,i.e.,sulfate(Ba-Sr),alkali-rich U and REE-U mineralization.Main-stage titanite from the Huayangchuan igneous carbonatite are rich in high field strength elements(HFSEs,e.g.,Zr,Nb and REEs),and show clear elemental substitutions(e.g.,Ti vs.Nb+Fe+Al and Ca+Ti vs.Fe+Al+REE).High-precision LA-ICP-MS titanite dating yielded a U-Pb age of 209.0±2.9 Ma,which represents the mainstage mineralization age at Huayangchuan,and is coeval with the local carbonatite dyke intrusion.This mineralization age is further constrained by the Re-Os dating of molybdenite from the Huayangchuan carbonatite,which yielded a weighted mean age of 196.8±2.4 Ma.Molybdenite Re contents(337.55-392.75 ppm)and C-OSr-Nd-Pb isotopic evidence of the Huayangchuan carbonatite both suggest a mantle origin for the carbonatite.Our study supports that the Late Triassic carbonatite magmatism was responsible for the world-class U-Mo-REE mineralization in the Qinling Orogen,and that the regional magmatism and ore formation was likely caused by the closure of the Mianlue ocean and the subsequent North China-South China continent-continent collision. | Hui Zheng Huayong Chen Dengfeng Li Chao Wu Xi Chen Chun-kit Lai | 2020 | Geoscience Frontiers2020，11，5： | 8 |
| 12 | Interactions between wind and water erosion change sediment yield and particle distribution under simulated conditions显示文摘Wind and water erosion are among the most important causes of soil loss, and understanding their interactions is important for estimating soil quality and environmental impacts in regions where both types of erosion occur. We used a wind tunnel and simulated rainfall to study sediment yield, particle-size distribution and the fractal dimension of the sediment particles under wind and water erosion. The experiment was conducted with wind erosion firstly and water erosion thereafter, under three wind speeds(0, 11 and 14 m/s) and three rainfall intensities(60, 80 and 100 mm/h). The results showed that the sediment yield was positively correlated with wind speed and rainfall intensity(P<0.01). Wind erosion exacerbated water erosion and increased sediment yield by 7.25%–38.97% relative to the absence of wind erosion. Wind erosion changed the sediment particle distribution by influencing the micro-topography of the sloping land surface. The clay, silt and sand contents of eroded sediment were also positively correlated with wind speed and rainfall intensity(P<0.01). Wind erosion increased clay and silt contents by 0.35%–19.60% and 5.80%–21.10%, respectively, and decreased sand content by 2.40%–8.33%, relative to the absence of wind erosion. The effect of wind erosion on sediment particles became weaker with increasing rainfall intensities, which was consistent with the variation in sediment yield. However, particle-size distribution was not closely correlated with sediment yield(P>0.05). The fractal dimension of the sediment particles was significantly different under different intensities of water erosion(P<0.05), but no significant difference was found under wind and water erosion. The findings reported in this study implicated that both water and wind erosion should be controlled to reduce their intensifying effects, and the controlling of wind erosion could significantly reduce water erosion in this wind-water erosion crisscross region. | TUO Dengfeng XU Mingxiang ZHAO Yunge GAO Liqian | 2015 | Journal of Arid Land2015，7，5： | 8 |
| 13 | The Optimization of Ultrasonic Extraction Technology of Total Flavonoids in Leaves of Mallotus apelta by Response Surface Analysis Methodology显示文摘[Objectives] Response surface analysis methodology was used to optimize the extraction technology of total flavonoids from Mallotus apelta leaves. [Methods] The total flavonoids were extracted using ultrasonic assisted ethanol extraction,and extraction rate of total flavonoids was taken as evaluation index. On the basis of single-factor experiment,Box-Behnken response surface methodology was employed for selecting the optimum extraction process. [Results]The optimum extraction conditions of total flavonoids were as follows: 75% of ethanol concentration,1∶ 25 of ratio of material to liquid,31 min of ultrasonic time. Under these conditions,the extraction rate of total flavonoids was 1. 115%.[Conclusions] The extraction process obtained by response surface methodology was stable,reasonable,accurate and reliable. It was a feasible method to extract the total flavonoids from M. apelta leaves. | Dengfeng ZOU Ruifen FAN Xiao HUANG Aize XIE | 2018 | Medicinal Plant2018，9，4： | 8 |
| 14 | Carbody Structural Lightweighting Based on Implicit Parameterized Model显示文摘Most of recent research on carbody lightweighting has focused on substitute material and new processing technologies rather than structures.However,new materials and processing techniques inevitably lead to higher costs.Also,material substitution and processing lightweighting have to be realized through body structural profiles and locations.In the huge conventional workload of lightweight optimization,model modifications involve heavy manual work,and it always leads to a large number of iteration calculations.As a new technique in carbody lightweighting,the implicit parameterization is used to optimize the carbody structure to improve the materials utilization rate in this paper.The implicit parameterized structural modeling enables the use of automatic modification and rapid multidisciplinary design optimization(MDO)in carbody structure,which is impossible in the traditional structure finite element method(FEM)without parameterization.The structural SFE parameterized model is built in accordance with the car structural FE model in concept development stage,and it is validated by some structural performance data.The validated SFE structural parameterized model can be used to generate rapidly and automatically FE model and evaluate different design variables group in the integrated MDO loop.The lightweighting result of body-in-white(BIW)after the optimization rounds reveals that the implicit parameterized model makes automatic MDO feasible and can significantly improve the computational efficiency of carbody structural lightweighting.This paper proposes the integrated method of implicit parameterized model and MDO,which has the obvious practical advantage and industrial significance in the carbody structural lightweighting design. | CHEN Xin MA Fangwu WANG Dengfeng XIE Chen | 2014 | Chinese Journal of Mechanical Engineering2014，27，3： | 7 |
| 15 | Atlas Based Kinematic Optimum Design of the Stewart Parallel Manipulator显示文摘Optimum design is a key approach to make full use of potential advantages of a parallel manipulator. The optimum design of multi-parameter parallel manipulators(more than three design parameters), such as Stewart manipulator, relies on analysis based and algorithm based optimum design methods, which fall to be accurate or intuitive. To solve this problem and achieve both accurate and intuition, atlas based optimum design of a general Stewart parallel manipulator is established, with rational selection of design parameters. Based on the defined spherical usable workspace(SUW), primary kinematic performance indices of the Stewart manipulator, involving workspace and condition number are introduced and analyzed. Then, corresponding performance atlases are drawn with the established non-dimensional design space, and impact of joint distribution angles on the manipulator performance is analyzed and illustrated. At last, an example on atlas based optimum design of the Stewart manipulator is accomplished to illustrate the optimum design process, considering the end-effector posture. Deduced atlases can be flexibly applied to both quantitative and qualitative analysis to get the desired optimal design for the Stewart manipulator with respect to related performance requirements. Besides, the established optimum design method can be further applied to other multi-parameter parallel manipulators. | SHAO Zhufeng TANG Xiaoqiang WANG Liping SUN Dengfeng | 2015 | Chinese Journal of Mechanical Engineering2015，28，1： | 6 |
| 16 | Beyond Antibiotics:Photo/Sonodynamic Approaches for Bacterial Theranostics显示文摘Rapid evolution and propagation of multidrug resistance among bacterial pathogens are outpacing the development of new antibiotics,but antimicrobial photodynamic therapy(aPDT)provides an excellent alternative.This treatment depends on the interaction between light and photoactivated sensitizer to generate reactive oxygen species(ROS),which are highly cytotoxic to induce apoptosis in virtually all microorganisms without resistance concern.When replacing light with low-frequency ultrasonic wave to activate sensitizer,a novel ultrasounddriven treatment emerges as antimicrobial sonodynamic therapy(aSDT).Recent advances in aPDT and aSDT reveal golden opportunities for the management of multidrug resistant bacterial infections,especially in the theranostic application where imaging diagnosis can be accomplished facilely with the inherent optical characteristics of sensitizers,and the generated ROS by aPDT/SDT cause broad-spectrum oxidative damage for sterilization.In this review,we systemically outline the mechanisms,targets,and current progress of aPDT/SDT for bacterial theranostic application.Furthermore,potential limitations and future perspectives are also highlighted. | Xin Pang Dengfeng Li Jing Zhu Jingliang Cheng Gang Liu | 2020 | Nano-Micro Letters2020，12，10： | 6 |
| 17 | A 2.833-kb Insertion in BnFLC.A2 and Its Homeologous Exchange with BnFLC.C2 during Breeding Selection Generated Early-Flowering Rapeseed显示文摘 | Lei Chen Faming Dong Jing Cai Qiang Xin Caochuang Fang Liang Liu Lili Wan Guangsheng Yang Dengfeng Hong | 2018 | Molecular Plant2018，11，1： | 6 |
| 18 | Cloning and characterization of a novel R1-MYB transcription factor in maize显示文摘R1-MYB transcription regulatory factors play vital roles in transcriptional modification during higher plant metabolism and development. In the present study, an R1-MYB gene was isolated from the maize (Zea mays L.) inbred line C8605-2 based on expressed sequence tags (ESTs), which expressed differentially between the hybrid C8605-2 × W1445 and its two parents in an oligonucleotide microarray. The full-length cDNA, designated as ZmMYBE1 (GeneBank Accession No. FJ024049), consists of 1992 nucleotides and contains a 1296-bp open reading frame. One conserved MYB domain was detected near the N-terminus of the deduced amino acid sequence, where an acidic Ser/Thr-rich area was also observed in the downstream region. The sequence of ZmMYBE1, mapped to chromosome 5 (bin 5.03), was revealed belonging to a multi-gene family in the maize genome. Subcellular localization analysis determined that ZmMYBE1 was located in the nucleus. Expression analysis showed that ZmMYBE1 transcripts accumulated in various tissues examined, with high expression levels in the immature ear and low levels in the tassel, root, and stem. The expression analysis for ZmMYBE1 in immature ears showed the highest expression level at the earliest vegetative developmental stage of the plant. Expression of ZmMYBE1 higher than that of the parents was observed in the hybrid C8605-2 × W1445. And also the expression level similar to the lowest of the parents in the hybrid C8605-2 × W245 was observed, revealing different expression patterns for the same gene in various hybrids combined from diversified inbred lines. Transgenic Arabidopsis overexpressing ZmMYBE1 implies that ZmMYBE1 has an important role in developmental regulation in maize. | Guanqing Jia, Bo Li, Dengfeng Zhang, Tifu Zhang, Zhiyong Li, Jingrui Dai, Shoucai Wang* National Maize Improvement Center of China, Key Laboratory of Crop Genomics and Genetic Improvement of Agriculture Ministry, Department of Plant Genetics & Breeding, China Agricultural University, Beijing 100193, China | 2009 | Progress in Natural Science:Materials International2009，19，9： | 6 |
| 19 | Fine Mapping of RppP25, a Southern Rust Resistance Gene in Maize显示文摘Southern rust (Puccinia polysora Underw.) is a major disease that can cause severe yield losses in maize (Zea mays L.). In our previous study, a major gene RppP25 that confers resistance to southern rust was identified in inbred line P25. Here, we report the fine mapping and candidate gene analysis of RppP25 from the near-isogenic line F939, which harbors RppP25 in the genetic background of the susceptible inbred line F349. The inheritance of resistance to southern rust was investigated in the BC1F1 and BC3F1 populations, which were derived from a cross between F939 and F349 (as the recurrent parent). The 1:1 segregation ratio of resistance to susceptible plants in these two populations indicated that the resistance is controlled by a single dominant gene. Ten markers, including three simple sequence repeat (SSR) markers and seven insertion/deletion (InDel) markers, were developed in the RppP25 region. RppP25 was delimited to an interval between P091 and M271, with an estimated length of 40 kb based on the physical map of B73. In this region, a candidate gene was identified that was predicted to encode a putative nucleotide-binding site leucine-rich repeat (NBS-LRR) protein. Two co-segregated markers will aid in pyramiding diverse southern rust resistance alleles into elite materials, and thereby improve southern rust resistance worldwide. | Panfeng Zhao Guobin Zhang Xiaojun Wu Na Li Dianyi Shi Dengfeng Zhang Chunfang Ji Mingliang Xu Shoucai Wang | 2013 | Journal of Integrative Plant Biology2013，55，5： | 5 |
| 20 | Simulation on a Car Interior Aerodynamic Noise Control Based on Statistical Energy Analysis显示文摘How to simulate interior aerodynamic noise accurately is an important question of a car interior noise reduction. The unsteady aerodynamic pressure on body surfaces is proved to be the key effect factor of car interior aerodynamic noise control in high frequency on high speed. In this paper, a detail statistical energy analysis (SEA) model is built. And the vibra-acoustic power inputs are loaded on the model for the valid result of car interior noise analysis. The model is the solid foundation for further optimization on car interior noise control. After the most sensitive subsystems for the power contribution to car interior noise are pointed by SEA comprehensive analysis, the sound pressure level of car interior aerodynamic noise can be reduced by improving their sound and damping characteristics. The further vehicle testing results show that it is available to improve the interior acoustic performance by using detailed SEA model, which comprised by more than 80 subsystems, with the unsteady aerodynamic pressure calculation on body surfaces and the materials improvement of sound/damping properties. It is able to acquire more than 2 dB reduction on the central frequency in the spectrum over 800 Hz. The proposed optimization method can be looked as a reference of car interior aerodynamic noise control by the detail SEA model integrated unsteady computational fluid dynamics (CFD) and sensitivity analysis of acoustic contribution. | CHEN Xin WANG Dengfeng MA Zhengdong | 2012 | Chinese Journal of Mechanical Engineering2012，25，5： | 5 |
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