摘要
针对安全带固定点强度试验这一准静态过程,通过对比分析弹性动力学中中心差分法(显式)和Newmark法(隐式)的优劣,选用LS-DYNA的显式求解器计算国产某出口澳大利亚车型座椅安全带。通过研究改变计算时间和加载函数两项关键参数,并选取一定的评价指标,逐步提高仿真结果与实车试验的吻合度。方法可推广到其他准静态强度分析中,为提高仿真准确度提供了较好的思路。
As to the strength test of seatbelts anchorages which is a quasi-static problem,through comparative analysis of central difference method( explicit integration) and Newmark method( implicit integration) in elastodynamics,this paper used explicit solution method in LS-DYNA to compute the seatbelts FE model of domestic minibuses exported to Australia. Lots of studies were carried out herein on two key parameters: calculation time and load curve,and certain evaluation indexes were selected,to gradually improve simulation results consistency with the real test. The methed can be extended to other quasi-static strength analysis problems and gives some useful conclusions on improving simulation accuracy.
出处
《机械强度》
CAS
CSCD
北大核心
2015年第6期1035-1039,共5页
Journal of Mechanical Strength
基金
国家"十二五"863重大项目(2011AA11A265
2012AA110701)
国家自然科学基金(50875173
51375313)
上海市科委基础研究重点项目(11140502000
13JC1408500)
上海市教委重点学科建设项目(J50503)资助~~
关键词
安全带固定点
准静态
显式积分
仿真精度
Anchorages for seatbelts
Quasi-static
Explicit integration
Simulation ccuracy