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通过单边缺口三点弯曲试样的动态冲击试验，研究了几种车辆用铝合金对动态冲击的响应特性。从选材角度对比分析了几种铝合金的动态断裂韧性及裂纹扩展阻力。
Through the dynamic impact test of three-point bending specimen with unilateral notches, the response characteristics of several aluminum alloys for vehicles to dynamic impact were studied. From the perspective of material selection, the dynamic fracture toughness and crack propagation resistance of several aluminum alloys were analyzed.