要使碰撞损伤最小，制造汽车保险杠的最佳材料是什么？
What is the best kind of material to make a car bumper out of to minimize damage in a crash?
以某车型为例，对前保险杠与碰撞盒组成的系统结构进行了基于耐撞性能的优化。
As an example, the crashworthiness optimization of a body-in-white substructure consisting of front bumper and crash box of a car is carried out with good results achieved.
以某型国产轿车保险杠为例，建立了保险杠低速碰撞有限元模型。
FEM model of the domestic car bumper system under low velocity impact is setup.
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