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| 1 | 正交异性钢桥面板裂纹扩展的均质化方法显示文摘正交异性钢桥面板往往在焊缝及其附近位置出现过早的疲劳损伤问题。考虑到这一结构形式所含的大量焊接接头,对其中的随机初始裂纹及气孔、夹杂等焊接缺陷对疲劳性能的影响展开研究。首先,利用扩展有限元法在求解几何不连续问题方面的高效性,生成了大量含随机缺陷的代表体积元;而后基于等效裂纹扩展长度准则,对随机缺陷进行了均质化处理,并通过数值算例证明了其在早期裂纹扩展中的适用性。作为重要的多尺度方法之一,该均质化方法可用于计算正交异性钢桥面板焊接接头的裂纹扩展。根据某正交异性钢桥面板的典型车辆荷载的现场实测数据,结合欧洲规范建议的年车流量及轮载横向分布,采用均质化的模型对U肋-顶板焊趾的宏观裂纹形成寿命(初始裂纹扩展至可检测尺度的寿命)进行了计算。结果表明:该方法可有效呈现宏观裂纹形成寿命的概率分布,但在现有假设下,初始裂纹尺度的影响明显高于气孔、夹杂等缺陷;若初始裂纹尺度呈均匀分布,将导致宏观裂纹形成寿命的分布较为离散;所得结果的统计特性依赖于所选择的Paris公式形式及其中的材料常数取值。 | 王本劲 DE BACKER H 陈艾荣 | 2017 | 中国公路学报2017，30，3： | 9 |
| 2 | Outcomes of radial in- cision of the tricuspid valve fur ventrieular septal delct elosme 显示文摘 | Russell H M Forsberg K Backer C L ct al | 2011 | Ann Thorac Surg2011，92，2： | 1 |
| 3 | Mechanical Principles of Natural Crimp of Fiber 显示文摘 | BRAND R H STANLY BACKER | 1962 | Textile Research Journal1962，32，1： | 1 |
| 4 | An improved in vivo method for atrioventricu lar node ablation via thoracotomy显示文摘 | Maciver R H Stewart R D Backer C L Tsao S Harrington D A Mavroudis C | 2010 | Braz J Med Biol Res2010，43，： | 1 |
| 5 | Diagnosis and nonsurgical management of bile leak complicated by biloma after blunt liver injury: Report of two cases显示文摘 | De Backer A Fierens H de SchepDer A | 1998 | European Radiology1998，8，9： | 1 |
| 6 | Dexamethosone reduce the inflammatory response to cardiopulmonary bypass in children显示文摘 | BROUICKI R A BACKER C L BADEN H P | 2000 | Ann Thorac Surg2000，69，5： | 1 |
| 7 | Getting the measure of eutrophication in the Baltic Sea: towards improved assessment principles and methods 显示文摘 | Andersen J H Axe P Backer H | 2011 | Biogeochemistry2011，106，： | 1 |
| 8 | Phylogenetic relationships of Puccinia horiana and other rust pathogens of Chrysanthemum morifolium based on rDNA ITS sequence analysis显示文摘 | Alaei H Backer M Nuytinck | 2009 | Mycological Research2009，113，67： | 1 |
| 9 | A comparison of theproperties of titanium-based films produced by pulsed and continuous DC magnetron sputtering 显示文摘 | Backer H Henderson P S Bradley J W | 2003 | Surf Coat Tectmology2003，，： | 1 |
| 10 | European Guidelines on Cardiovascular Disease Prevention in Clinical Practice (version 2012) 显示文摘 | Perk J1 De Backer G Gohlke H | 2012 | Eur Heart J2012，33，13： | 1 |
| 11 | Dopamine versus norepnephrine in the treatment of septic shock : a meta-analysis 显示文摘 | De Backer D Aldecoa C Njimi H | 2012 | Crit Care Med2012，40，3： | 1 |
| 12 | Relationship between oxygen uptake and oxygen delivery in septic patients: ef- fects of prostacyclin versus dobutamine显示文摘 | DE BACKER D BERRE J ZHANG H | 1993 | Cfit Care Med1993，21，11： | 1 |
| 13 | Liquid chromatographic separation of doxycycline and 4-epidoxycycline in a tissue depletion study of doxycycline in turkeys显示文摘 | Croubels S Vermeersch H Backer P D | 1998 | J Chromatogr B1998，708，： | 1 |
| 14 | Poiseuille flow to measure the viscosity of particle model fluids 显示文摘 | BACKER J A LOWE C P HOEFSLOOT H C J | 2005 | The Journal of Chemical Physics2005，122，15： | 1 |
| 15 | Dexam- ethasone reduces the inflammatory response to car- diopulmonarybypass in children显示文摘 | BRONICKI R BACKER C BADEN H | 2000 | Annals of Tho- racic Surgery2000，69，5： | 1 |
| 16 | European guidelines on cardiovascular disease prevention in clinical practice (version 2012) : the fifth joint task force of the European Society of Cardi- ology and other societies on cardiovascular disease prevention in clinical practice显示文摘 | Perk J De Backer G Gohlke H | 2012 | Atheroselerosis2012，223，1： | 1 |
| 17 | Sol-gel derived Oi02 wood composit显示文摘 | Hütbert T Unger B üBacker M | 2010 | J Sol-Gel Sci Technol2010，53，： | 1 |
| 18 | The dynamic of roller drafting, part 1: drafting force measurement 显示文摘 | PLONSKER H R BACKER S | 1967 | Text Res J1967，37，： | 1 |
| 19 | Adoptive tumor therapy with T lymphocytes enriched through an IFN - gamma captyre assay 显示文摘 | BACKER c POHLA H | 2001 | Nat Meal2001，7，10： | 1 |
| 20 | Microstrueoaral evolution during directional annealing显示文摘 | Badmos A Y Frost H J Backer I | 2002 | Acta Mater2002，50，： | 1 |
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