侧撞

基于响应面法的汽车侧撞安全性仿真优化

Simulation and Optimization of Car Safety Performance in Side Impact Based on Response Surface Method

对比分析Kriging和多项式响应面两种近似模型对于车门侧撞响应的拟和误差，表明用Kriging模型构建车门抗撞性近似模型是合适的。

The error of kriging and polynomial response surface models for approximating car door side impact response is contrasted . The research shows that kriging is presented as an alternative method for constructing car door structural crashworthiness approximation .

研究结果的准确性在随后的C-NCAP侧撞试验中得到验证。

The accuracy of results is validated by follow-up C_NCAP side crash tests .

我们与另一辆车发生了侧撞。

We were involved in a side-on crash with another car .

前后排侧面窗帘式气囊在遇到严重侧撞时也会提供更加安全的保护。

Front and rear side curtain airbags help provide protection in severe side impacts .

一种侧撞试验台的方案设计

A Design of Side Impact Sled Test

最后有针对性地进行设计优化，结果大幅度提高了该车的侧撞安全性。

Finally a design optimization is targetedly performed , and as a result the crash safety of vehicle greatly enhanced .

侧面的撞击经双层底板、强度的侧面门框和每个车门内部的防侧撞杆防护而降至最低。

Side impact intrusion is minimised by the double-skinned floor construction , strong side sills and integral side impact bars in each door .

基于不确定度理论，针对汽车自行车侧撞事故的速度计算模型建立了相应的不确定度分析方法。

Based on the uncertainty theory , a corresponding uncertainty analysis method for speed calculation model for vehicle-bicycle side collision accident is set up .

接着结合正交试验设计与有限元仿真，通过少量的运算次数，准确地找出对侧撞安全性影响显著的因素；

Then by means of orthogonal experimental design and finite element simulation , the remarkable affecting factors of side crash safety are accurately found through only rather few calculations .

最后，对流场模拟结果仔细分析后，认为湍流粉碎机的主要粉碎方式是侧撞或摩擦引起的剪应力起主要作用的疲劳断裂，随之阐明了相应论据。

Last , after analyzing carefully simulation results , consider shear stress arose from eccentric impact and friction play an important role in fatigue comminution in turbulence mill , then illustrate by facts .

仿真结果表明：基于响应面法的子结构模型可将汽车侧撞安全性优化时间缩短至传统整车模型方法的五分之一。

The results of the simulation demonstrated that the duration of optimization using sub-structure model and RSM can be reduced to one fifth , compared with the traditional method of using a full scale model .

侧撞试验台是一种新近出现的成本较低、研究车辆在侧面碰撞中车门侧面结构耐撞性及侧面内饰和侧面安全气囊对乘员保护作用的部件试验台。

Side impact sled test is the component test which appears recently the less cost and achieves the aims that research the side crashworthiness of passenger car door structure in side impact and the door trim and side airbags protection for occupants .

文中围绕上述问题，分别从仿真模型、设计方法和设计流程三个层次上，对侧碰耐撞性的快速设计方法进行了探讨和论证。

In this thesis , rapid design methods were studied and demonstrated from three different levels such as simulation models , design methods and design process : First , model is the core of vehicle crash simulation method .