共查询到3条相似文献,搜索用时 0 毫秒
1.
提出基于安全气囊织物进行经纬向拉神试验和画框剪切试验,研究该材料的各向异性特性.建立包括安全气囊、可压溃转向柱、带可预紧和限力器的三点式安全带等的正面碰撞约束系统模型,并将仿真结果与实车试验结果对比和验证.分别从定性和定量分析两个角度,深入讨论约束系统设计参数对假人伤害评价指标的影响,以用于指导约束系统的碰撞安全性能设计. 相似文献
2.
Aim To study the influence of restraint system performance
upon the occupant's response during impact, and provide a scientific base for occupant
restraint system design. Methods In the light of basic theory of
multibody system dynamics and impact dynamics on the basis of classical theory of impact,
R-W method is adopted to construct the vehicle-occupant system model consisting of
fourteen rigid bodies, thirty seven DOFs and slip joints for the simulation. A software
named SVC3D(3-dimensional simulation of vehicle crash) is developed in the FORTRAN
language. Results The results of simulation have a good coincidence with
those of tests and the restraint system with low elongation webbing and equipped with
pretensioner provides better restraint effect for the occupant. Conclusion The
model of vehicle-occupant multibody system and SVC3D are suitable for use. Occupant should
be belted with low elongation webbing to a certain degree and occupant restraint system
should be equipped with pretensioner. 相似文献
3.
以320 t混铁车为研究对象,根据现场实测混铁车内衬厚度,采用Fluent等软件模拟计算出混铁车外表面温度,并分析混铁车内衬厚度变化对其外表面温度的影响。结果表明,混铁车外表面温度与内衬残余厚度之间存在一一对应的关系,随着混铁车使用次数的增加,内衬厚度愈来愈薄,外表面温度随之升高。此外,根据建立的混铁车外表面温度与内衬厚度之间的关系,利用红外热像技术,可实现对内衬磨损程度的实时监控。 相似文献