Development of Vehicle Body Structure Having Maximum Shock Energy Absorption Ability

具有最大冲击能量吸收能力的车身结构的开发

基本信息

批准号：
07555344
负责人：
YAMAZAKI Koetsu
金额：
$ 3.58万
依托单位：
Kanazawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1997
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555344/
关键词：
Shock Absorption Vehicle Body Design Plate and Shell Structure Structural Optimization Dynamic Crushing

项目摘要

(1) Development of Optimum Design System for Absorbing Energy MaximizationA efficient new technique for structural optimization of highly nonlinear structural behavior is developed by using the technique of design-of-experiment, analysis of variance, response surface approximation and mathematical programming, without sensitivities. The validity of the developed technique is confirmed by applying to basic numerical examples of crashworthiness.(2) Maximization of Dynamic Crushing Energy Absorption of Cylinder and Square TubesThe developed technique has been applied to the maximization design problems of dynamic crushing energy absorption of cylindrical and square tubes under mass and mean crushing force constraints. From the numerical results, maximum energy absorption is attained by increase the thickness and decrease the radius and edge length as much as possible without column bucking. The effect of stiffeners to the energy absorption was also studied, and it is found that the stiffener can reduce the mean crushing force and control the crushing patterns.(3) Crushing Experiment of Energy Absorption EffectAluminum cylinders were crushed experimentally, and the absorbing energy is measured directly and compared with the results of numerical simulation. A new type of vehicle body structure is also suggested to absorb much crushing energy to prevent passengers from injury.

（1）开发用于吸收能量最大化的最佳设计系统有效的新技术，用于通过使用实验设计，方差分析，响应表面近似和数学编程的技术来开发高度非线性结构行为的结构优化，而无需敏感。通过应用于撞车道的基本数值示例，可以确认开发技术的有效性。（2）最大化动态压碎能量吸收圆柱体和Square Tubesthe开发的技术已应用于在质量和平均压缩力下的圆柱形和方形管的动态粉碎能量吸收动态粉碎能量吸收的最大设计问题。从数值结果中，可以通过增加厚度并尽可能减小半径和边缘长度而无需柱子而实现最大的能量吸收。还研究了加劲液对能量吸收的影响，发现加劲牙可以减少平均压碎力并控制压碎模式。（3）对能量吸收效应圆柱体的压碎实验进行了实验，并直接测量吸收能量并与数值模拟的结果进行测量。还建议一种新型的车身结构吸收大量的粉碎能量，以防止乘客受伤。