基于高强钢与材料填充的白车身耐撞性轻量化设计
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摘要
车身结构在碰撞中承担着变形吸能、传递碰撞力以及维持生存空间的作用,基于耐撞性前提下的白车身轻量化设计,有助于提高车辆动力性与燃油经济性,降低排放。将车身结构碰撞形式分解为轴向压溃与横向弯曲两种工况,通过研究不同等级高强钢板与不同类型材料填充组合结构在两种工况下的吸能与抗弯性能,得到针对安全部件与模块的优化结论。将这些结论应用于某量产SUV车身,仿真分析表明该方法不仅提升了车身耐撞性能,同时降低了白车身质量,实现了车身的耐撞性与轻量化设计。
Structure of vehicle body is designed to absorb kinetic energy,transform impact force and keep survival space during crash. Light weight design of BIWcan realize better power performance and fuel economy,decrease exhaust emission. In this paper,collision of vehicle body structure is decomposed into axial crushing and transverse bending. Thin walled structure's ability inenergy absorption and bending resistanceis researched,which is based on high strength steel and different filling materials. After applied the research conclusion in a SUV's body optimization,the crash simulation result shows that it improved passive safety and reduced body weight effectively.
Structure of vehicle body is designed to absorb kinetic energy,transform impact force and keep survival space during crash. Light weight design of BIWcan realize better power performance and fuel economy,decrease exhaust emission. In this paper,collision of vehicle body structure is decomposed into axial crushing and transverse bending. Thin walled structure's ability inenergy absorption and bending resistanceis researched,which is based on high strength steel and different filling materials. After applied the research conclusion in a SUV's body optimization,the crash simulation result shows that it improved passive safety and reduced body weight effectively.
引文
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[12]李志斌,虞吉林,郑志军,等.薄壁管及其泡沫金属填充结构耐撞性的实验研究[J].实验力学,2012,27(1):77-85LI ZhiBin,YU Ji Lin,ZHENG Zhi Jun,et al.An experimental study on the crashworthiness ofthin-walled tubes and their metallic foamfilled structures[J].Journal of Experimental Mechanics,2012,27(1):77-85(In Chinese).
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[14]黄志超,侧向载荷下泡沫铝填充薄壁金属圆管的变形与吸能特性[D].太原:太原理工大学,2016:3-6HUANG Zhi Chao,Deformation and energy absorption properties ofthin-walled metal tubes filled with aluminum foam under lateral load[D].Taiyuan:Taiyuan University of Technology,2016:3-6(In Chinese).
[2]US Government Printing Office.Partnership for a New Generation of Vehicles(PNGV):assessment of program goals,activities,and priorities[R/OL].(1996-07-30).https://archive.org/details/partnershipforne00unit
[3]American Iron and Steel Institute.Ultra Light steel auto body final report[EB/OL].(2014-01-16).http://www.autosteel.org/~/media/Files/Autosteel/Programs/ULSAB/ulsab_final_report.pdf.
[4]American Iron and Steel Institute.ULSAB-AVC overview report[R/OL].(2002-01-01).http://www.autosteel.org/~/media/Files/Autosteel/Programs/ULSAB-AVC/avc_overview_rpt_complete.pdf.
[5]刁可山,蒋浩民,王利,等.宝钢第三代高强钢QP钢的成形特性[C].2012中国汽车轻量化技术研讨会论文集,2012:225-228DIAO Ke Shan,JIANG Hao Min,WANG Li,et al.Experimentalresearch on formability of QP steel[C].2012 China Automotive Lightweight Technology Forum,2012,225-228(In Chinese).
[6]路洪洲,王智文,马鸣图,等.轻量化乘用汽车的星级评价方法研究[C].2012中国汽车轻量化技术研讨会论文集,2012:454-461.LU HongZhou,WANG Zhi Wen,MA MingTu,et al.Evaluation regulation study of automotive lightweight[C].2012 China Automotive Lightweight Technology Forum,2012,454-461(In Chinese).
[7]林建平,舒常乐,金建伟,等.轿车热冲压保险杠的柱类碰撞耐撞性[J].汽车安全与节能学报,2015,6(2):134-138.LIN Jian Ping,SHU ChangLe,JIN Jian Wei,et al.Pole impact crashworthiness of hot stamping front bumper of a car[J].JAutomotive Safety and Energy,2015,6(2):134-138(In Chinese).
[8]程江洪,王丽娟,陈宗渝,等.基于TRB技术的车身减量化设计与优化分析[J].机械强度,2017,39(1):57-62.CHENG JiangHong,WANG Li Juan,CHEN ZongYu,et al.Reduction design and optimization analysis for vehicle body based on tailor rolled blank technology[J].Journal of Mechanical Strength,2017,39(1):57-62(In Chinese).
[9]Royston K,Hornung M,Hajj M,等.结构胶和结构泡沫-改善碰撞性能的可行技术(英文)[J].汽车安全与节能学报,2010,1(4):313-319.Royston K,Hornung M,Royston K,Hornung M,Hajj M,et al.Crash performance enabling technologies,structural adheise and structural foam[J].J Automotive Safety and Energy,2010,1(4):313-319(In Chinese).
[10]吕晓江,刘卫国,颜先华,等.高密度结构泡沫对汽车前纵梁耐撞性的影响及应用[J].汽车安全与节能学报,2014,5(1):1-16LV Xiao Jiang,LIU Wei Guo,YAN Xian Hua,et al.Effect ofhighdensity structural foam on crashworthiness of vehicle front side-rail and its application[J].J Automotive Safety and Energy,2014,5(1):1-16(In Chinese).
[11]张勇,林福泳.铝泡沫填充薄壁结构耐撞可靠性优化设计[J].机械工程学报,2011,22(47):93-99ZHANG Yong,LIN FuYong,et al.Crashworthiness reliability design optimization of aluminum foam filledthin-wall structures[J].Journal of Mechanical Engineering,2011,22(47):93-99(In Chinese).
[12]李志斌,虞吉林,郑志军,等.薄壁管及其泡沫金属填充结构耐撞性的实验研究[J].实验力学,2012,27(1):77-85LI ZhiBin,YU Ji Lin,ZHENG Zhi Jun,et al.An experimental study on the crashworthiness ofthin-walled tubes and their metallic foamfilled structures[J].Journal of Experimental Mechanics,2012,27(1):77-85(In Chinese).
[13]曾繁波,泡沫铝填充管的吸能特性研究及其在轿车前纵梁结构中的应用[D].广州:华南理工大学,2014:20-23.ZENG Fan Bo,Study on energy absorption capability of aluminumfoam-filled tubes and its application in automotive front rails[D].Guangzhou:South China University of Technology,2014:20-23(In Chinese).
[14]黄志超,侧向载荷下泡沫铝填充薄壁金属圆管的变形与吸能特性[D].太原:太原理工大学,2016:3-6HUANG Zhi Chao,Deformation and energy absorption properties ofthin-walled metal tubes filled with aluminum foam under lateral load[D].Taiyuan:Taiyuan University of Technology,2016:3-6(In Chinese).