高速列车车体结构热力耦合静强度及刚度优化分析
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摘要
高速列车轻量化在降低能耗的同时,也对其服役环境提出了更高的要求。特别是在发生火灾时,轻量化的承载结构在热力耦合作用下可能受到破坏,从而造成损失。本文以有限元理论、非线性理论和结构准静态理论为基础,建立了高速列车车体结构热耦合静强度刚度仿真分析方法,并基于ABAQUS软件提出了仿真分析技术路线。通过对某高速列车车体结构热力耦合静强度刚度仿真分析及优化,验证了该方法的实用性和有效性。
Light weighting of high-speed trains drastically deteriorates their service environment while reducing energy consumption. In particular, in an event of a fire, light-weight bearing structure is likely to be destroyed by thermal coupling, resulting in great losses. Based on finite element theory, nonlinear theory and structural quasi-static theory, a simulation method of thermal coupled static strength stiffness of high-speed train body structure was established. With ABAQUS software, a simulation analysis technology route was proposed. The simulation analysis and optimization of static strength stiffness of thermal coupling of body structure verified the practical application of this method.
Light weighting of high-speed trains drastically deteriorates their service environment while reducing energy consumption. In particular, in an event of a fire, light-weight bearing structure is likely to be destroyed by thermal coupling, resulting in great losses. Based on finite element theory, nonlinear theory and structural quasi-static theory, a simulation method of thermal coupled static strength stiffness of high-speed train body structure was established. With ABAQUS software, a simulation analysis technology route was proposed. The simulation analysis and optimization of static strength stiffness of thermal coupling of body structure verified the practical application of this method.
引文
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[2]张相宁,李明高,胡震.动车组车体防火强度及刚度计算分析[J].机械研究与应用,2012(4):75-78.
[3]马纪军,安超,张丽荣.不同火源功率对列车火灾影响的FDS模拟与分析[J].大连交通大学学报,2011,32(6):1-4.
[4]张雪艳,顾大权,邱淑芳.一维热传导问题时变边界上热通量重构问题[J].数值计算与计算机应用,2010,31(4):300-308.
[5]段永川,官英平.激光拼焊板焊接工艺及焊后的力学性能[J].塑性工程学报,2014(3):67-72.
[6]霍然,袁宏永.性能化建筑防火分析与设计[M].合肥:安徽科学技术出版社,2003.
[7]李绍平.成都动车存车场火灾危险性数值模拟分析[D].成都:西南交通大学,2010:14-15.
[8]王升.高速列车车厢内火灾燃烧特性研究[D].成都:西南交通大学,2017:35-36.
[9]MCGRATTAN K,KLEIN B,HOSTIKKS S,et al.Fire dynamics simulator-User's guide[Z].Gaithersburg:National Institute of Standard and Technology,2008.
[10]European Committee for Standardization.Railway applications Structural requirements of railway vehicle bodies Part 1:Locomotives and passenger rolling stock(and alternative method for freight wagons):BS EN 12663-1-2010[S].Britain:Central Secretarial,2010.