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| 1 | Large Chip Production Mechanism under the Extreme Load Cutting Conditions显示文摘There has existed a great deal of theory researches in term of chip production and chip breaking characteristics under conventional cutting and high speed cutting conditions,however,there isn't sufficient research on chip formation mechanism as well as its influence on cutting state regarding large workpieces under extreme load cutting.This paper presents a model of large saw-tooth chip through applying finite element simulation method,which gives a profound analysis about the characteristics of the extreme load cutting as well as morphology and removal of the large chip.In the meantime,a calculation formula that gives a quantitative description of the saw-tooth level regarding the large chip is established on the basis of cutting experiments on high temperature and high strength steel2.25Cr-lMo-0.25V.The cutting experiments are carried out by using the scanning electron microscope and super depth of field electron microscope to measure and calculate the large chip produced under different cutting parameters,which can verify the validity of the established model.The calculating results show that the large saw-toothed chip is produced under the squeezing action between workpiece and cutting tools.In the meanwhile,the chip develops a hardened layer where contacts the cutting tool and the saw-tooth of the chip tend to form in transverse direction.This research creates the theoretical model for large chip and performs the cutting experiments under the extreme load cutting condition,as well as analyzes the production mechanism of the large chip in the macro and micro conditions.Therefore,the proposed research could provide theoretical guidance and technical support in improving productivity and cutting technology research. | LIU Xianli HE Genghuang YAN Fugang CHENG Yaonan LIU Li | 2015 | Chinese Journal of Mechanical Engineering2015，28，2： | 5 |
| 2 | Context-aware local abnormality detection in crowded scene显示文摘In this paper, we propose a novel algorithm by jointly modeling motion and context information targeting at detecting abnormal events in crowded scenes. In our algorithm, context pattern information,extracted through volume local binary patterns computation on three orthogonal planes(LBP-TOP) between local target areas with surrounding areas, is explicitly taken into consideration for localizing abnormality. To capture motion information, a novel feature descriptor named Multi-scale Histogram of Frequency Coefficient is explored by taking Fourier Transform on the extracted dense trajectories. For detection of abnormality, sparse reconstruction cost from a learned event dictionary is adopted to classify local normal and abnormal events.Experiments conducted on three benchmark datasets show superior performance to many related state-of-the-art methods. | ZHU XiaoBin JIN Xin ZHANG XiaoYu LI ChangSheng HE FuGang WANG Lei | 2015 | Science China(Information Sciences)2015，58，5： | 1 |
| 3 | Research on the fracture and breakage of heavy-duty turning tool for rough machining hydrogenated cylindrical shell显示文摘 | HE Genghuang LIU Xianli YAN Fugang | 2011 | Solid State Phenomena2011，175，： | 1 |
| 4 | Research on the application and design of special tools of the hydrogenated cylindrical shell 显示文摘 | HE Genghuang LIU Xianli YAN Fugang | 2011 | Advanced Materials Research2011，188，： | 1 |
| 5 | Research on the application and design of special tools of the hydrogenated cylindrical shell 显示文摘 | HE Genghuang LIU Xianli YAN Fugang | 2011 | Advanced Materials Research2011，188，： | 1 |
| 6 | Research on the tools' strength in the condition of uncommonly dynamic heavy-duty loads 显示文摘 | YAN Fugang LIU Xianli HE Oenghuang | 2012 | Advanced Materials Research2012，500，： | 1 |
| 7 | Research on the Application and Design of Special Tools of the Hydrogenated Cylin- drical Shell 显示文摘 | HE Genghuang LIU Xianli YAN Fugang | 2011 | Advanced Materials Research2011，188，： | 1 |
| 8 | Research on the Application and Design of Special Tools of the Hydrogenated Cylin- drical Shell 显示文摘 | HE Genghuang LIU Xianli YAN Fugang | 2011 | Advanced Materials Research2011，188，： | 1 |
| 9 | Research on the Fracture and Breakage of Heavy-Duty Turning Tool for Rough Ma- chining Hydrogenated Cylindrical Shell 显示文摘 | HE Genghuang LIU Xianli YAN Fugang | 2011 | Solid State Phenome- na2011，175，： | 1 |
| 10 | Research on the fracture and breakage of heavy-duty turning tool for rough machining hydrogenated cylindrical shell显示文摘 | HE Genghuang L1U Xianli YAN Fugang | 2011 | Solid State Phenomena2011，175，： | 1 |
| 11 | Research on the application and design of special tools of the hydrogenated cylindrical shell显示文摘 | HE Genghuang LIU Xianli YAN Fugang | 2011 | Advanced Materials Research2011，188，： | 1 |
| 12 | Research on the dynamic mechanical characteristics and turning tool life under the conditions of excessively heavy-duty turning 显示文摘 | He Genghuang Liu Xianli Yan Fugang | 2012 | Frontiers of Mechanical Engineering2012，7，3： | 1 |
| 13 | Research on the high-efficiency turning tool for rough machining of large hydrogenated cylindrical shell forging显示文摘 | HE Genghuang LIU Xianli YAN Fugang | 2011 | Advanced Science Letters2011，4，10： | 1 |
| 14 | A New Approach for Structural Optimization with Application to Wind Turbine Tower显示文摘This work takes the bionic bamboo tower(BBT)of 2 MW wind turbine as the target,and the nondominated sorting genetic algorithm(NSGA-II)is utilized to optimize its structural parameters.Specifically,the objective functions are deformation and mass.Based on the correlation analysis,the target optimization parameters were determined.Furthermore,the Kriging model of the BBT was established through the Latin Hypercube SamplingDesign(LHSD).Finally,the BBT structure is optimized withmultiple objectives under the constraints of strength,natural frequency,and size.The comparison shows that the optimized BBT has an advantage in the Design Load Case(DLC).This advantage is reflected in the fact that the overall stability of the BBT has increased by 2.45%,while the displacement of the BBT has decreased by 0.77%.In addition,the mass of the tower is decreased by 1.49%.Correspondingly,the steel consumption of each BBT will be reduced by 2789 Kg.This work provides a scientific basis for the structural design of the tower in service. | Fugang Dong Yuqiao Zheng Hao Li Zhengwen He | 2022 | Energy Engineering2022，119，3： | 0 |
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