为了研究和改善车门耐撞性，参考 E‐NCAP的柱状碰撞试验，建立了某车型的车门三维模型，并运用Hyper Works和LS‐DYNA对其进行联合碰撞仿真。对比了不同材料应变率，防侧撞梁的不同截面形状、不同安装位置和数量下的车门耐撞性。得出结论，材料应变率参数为C40 P6，防侧撞梁截面形状为半圆形，安装位置为斜置时的车门的耐撞性较好。同时，加装一根防侧撞梁使得内板侵入量减小了11％以上，可有效改善车门耐撞性。%In order to study and improve the door's crashworthiness ,this paper establishes a three‐di‐mensional model of a car door and performs a joint impact simulation by Hyper Works and LS‐DYNA , according to columnar crash test of E‐NCAP .This paper compares the car's crashworthiness under different material strain rates of a door ,different sectional shapes ,different mounting positions and different numbers of side‐impact beams .Some conclusions are draw n:w hen the material strain rate parameter is C40P6 and the sectional shape of side‐impact beams is semicircular and its mounting posi‐tion is skew ,the door's crashworthiness is better .Meanwhile ,the installation of a side‐impact beam would reduce the deformation displacement of inner board by over 11% ,which thus can effectively im‐prove the door's crashworthiness .
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