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impact law 撞擊定律。

impacted

The results and the main contributions of the dissertation are as following . when the instantaneous impact is assumed and the friction between the contact surfaces is taken into account , the relations between the pre - impact state and the post - impact state cannot be described by using any simple impact laws 論文共計八章,其主要研究內容及學術貢獻如下: ( 1 )在瞬間碰撞假設和考慮碰撞面切向摩擦的情況下,斜碰撞前后的系統狀態關系不能用任何簡單的碰撞關系描述。