Dynamic Response Analyzes of Plural Cars Collision in Arbitary Direction and Analyzes of Damage Influnce on Interior Joints Structure of Driver

首先采用十四关节十五质量系统模型对人体进行三维动力学建模。在人体上进行了正面、横向和垂直三个激励方向的实验。建立了45自由度的运动方程，并采用最小二乘法的局部优化技术对14个关节参数进行了辨识。其次，通过在车身周围加入非线性的20个碰撞单元，建立了车身的完整模型。将该模型与上述人体动力学建模相结合，分析了车辆-驾驶员系统的动力学响应，并考虑了座椅位置、速度和驼峰条件变化对驾驶员动力学响应的影响。研究了汽车斜向碰撞障碍物时碰撞构件吸能的基本特性 ...更多信息 .利用压缩机和落锤试验机，对一系列不同形状的前纵梁缩尺模型在不同碰撞角条件下进行了静态和动态碰撞试验。根据局部渐进屈曲和球后屈曲得到的力-位移曲线，阐明了碰撞构件的吸能特性随碰撞角度的变化规律。由上述碰撞构件、发动机等组装的复合结构的能量吸收特性，的解析研究，并验证了它们是如何变化的碰撞条件，如碰撞角度等。最后，通过改变汽车质量、速度和碰撞角度，对汽车与另一辆运动汽车碰撞时，汽车、驾驶员和驾驶员的关节力进行了一系列的动态响应分析，明确了各参数对这些响应的影响。其次，建立了驾驶员关节肌肉骨骼系统模型，并基于优化方法计算了主要肌肉力的时程。肌肉肌腱构件由收缩构件、串联弹性构件和并联弹性构件组成。研究了驾驶员关节力和肌肉响应随汽车质量、速度和碰撞角度的变化规律。少

A three-dimensional dynamic modeling of human's body is carried out at first by using the model of fourteen joints and fifteen masses system. The experiments on human body have been done for three exciting directions of the frontal, the transverse and the vertical. The equations of motion with the 45 D.O.F are formulated and the fourteen joint parameters are identified by the method of partial optimization technique with a least squares approach. In the next place, full modeling of a car body has been made by adding nonlinear 20 crash elements around car body. Combing the model with dynamic modeling of human body stated above, the dynamic responses of a vehicle-driver system are analyzed and the dynamic responses of driver have been clarified numerically with the influences of the variance of seat positions, speeds and hump conditions considered. The basic characteristics of energy absorption of crach members of a car when it collides onto a barrier in skew diresction have been strdied … More . Static and dynamic collapsing tests have been done for a series of scale models of front side members with different shapes, under the conditions of different crash angles, by using a compression machine and a weight-drop apparatus. Based on the force-displacement curves obtained by local progressive buckling and globle post bucklig, it has been clarified how the energy absorption characteristics of crash members vary with the change in colliding angle. The energy absorption characteristics of a compound structure which is assembled by the above crash members, an engine, etc., are analytically investigated, and it is verified how they vary with the colliding conditions such as colliding angles, etc.. Finally, a series of dynamic response analysis of a car, driver and driver joint-forces, have been carried out under the condition that when it collides onto another moving car by varying car mass, speeds and collision angle, and the influence of each parameter on these response have been made clear. The modeling of driver joints with musculoskeletal system have been made in the next place, and the time histories of primary muscle-forces have been calculated based on the optimisation method. The musculotendon members are modeled by contractile component, series elastic component and parallel elastic component. And it is made clear how the dynamic response of driver-joint forces and muscle responses vary with car mass, speeds and collision angle. Less