有限元计算在护栏设计和乘员保护中的应用

The Application of Finite Element Analysis to Guardrail Designand Occupant Protection

目前 ,汽车 -护栏碰撞研究的主要方法还是实车足尺寸实验 ,但是这种方法实验周期长 ,费用昂贵。仿真的方法可以花费很少的资金来完成不同参数下的碰撞研究。该文通过LS -DYNA建立轿车 -护栏的碰撞仿真系统 ,基于这样的系统进行轿车 -护栏的碰撞性能研究 ,对那些会显著影响护栏性能的参数进行了分析。结果表明 ,有限元仿真是进行汽车护栏碰撞研究的有效方法。

Recently, conducting full-scale tests to gain insight into car-guardrail impact is still the most important approach. But this method is expensive and time consuming. On the other hand, finite element analysis of impact behavior under different impact scenarios is cheaper and efficient. It is economically possible to perform impact tests on a wide range of parameters. In the paper, LS-DYNA had been used to build a car-guardrail impact simulation system. Base on the system impact characters and relevant parameters had been studied. The results indicated that the finite element analysis is a efficient research method to guardrail design and occupant protection.