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During impact test, no vibration and bird pecking phenomenon at contact point.
冲击试验时，接点不应产生振动和鸟啄现象。
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The bird is replaced by a SPH model at high speed impact.
鸟体在高速撞击下采用SPH方法模拟。
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The bird is replaced by a SPH model at high speed impact.
鸟体在高速撞击下采用SPH方法模拟。
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