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新型刚性护栏防撞性能的数值模拟

, PP. 31-36

Keywords: 道路工程,刚性护栏,数值模拟,防撞性能,护栏形式优化

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Abstract:

?为了验证在车辆与护栏的碰撞过程中,通过改造标准F型混凝土刚性护栏截面形式来改善其防撞性能的可能性,开发设计了IF型刚性护栏,并引入FordF800车型在ANSYS/LS-DYNA软件环境中进行碰撞仿真分析。数值模拟结果表明:混凝土刚性护栏截面形式的改变对碰撞过程的影响显著,IF型刚性护栏结构具有更好的车辆导向性和乘员安全性;通过改造混凝土刚性护栏截面形式来改善其防撞性能的做法是可行的;给出的IF型刚性护栏的设计图可为进一步的实车碰撞试验提供参考依据。

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