摘要
为了得到与实验一致性较好的蜂窝铝有限元模型,利用Hypermesh和Pamcrash软件联合仿真,以软件材料库中105号壳单元为基础,建立了蜂窝铝模型,模拟蜂窝铝异面匀速压缩过程;通对比触发力、平台力、吸能量和压实应变,验证仿真模型。对比结果表明,仿真模型与实验试件的主要变形模式相同,仿真数据与实验数据吻合。在考察蜂窝铝异面压缩吸能能力的情况下,所建立的蜂窝铝有限元模型能够代替实验试件,进行研究与设计。
To reach good agreements between the test specimen and the finite element model of aluminum honeycomb, the Hypermesh and Pamcrash computer program are used.Based on the material105 in Pamcrash program, the finite element model of aluminum honeycomb is built by the shell element to simulate the out-of-plane crushing behavior with a constant impact velocity.The finite element model is verified by comparing the trigger force, the platform force, the energy absorption, and the compaction strain.The comparison results show that the simulation model has the same main deformation mode as the test specimen, and the simulation data is consistent with the test.The finite element model of honeycomb aluminum can be used to replace the experimental specimen for research and design when investigating the energy absorption capacity of honeycomb aluminum.
作者
徐天时
孙彦彬
马思群
李明伟
毕宸
XU Tian-shi;SUN Yan-bin;MA Si-qun;LI Ming-wei;BI Chen(College of Locomotive and Rolling Stock Engineering, DalianJiaotong University, Dalian Liaoning 116028, China)
出处
《机械研究与应用》
2019年第3期66-69,共4页
Mechanical Research & Application
基金
国家重点研发计划资助项目(编号:2016YFB1200403)
关键词
蜂窝铝
吸能
仿真
异面压缩
aluminum honeycomb
energy absorption
simulation
out-of-plane crush
