首先因较小的波浪载荷引起一定的疲劳损伤并造成极限承载能力的下降，然后因极限波浪载荷而引起结构的完全破坏。
At first, small wave load have caused an amount of damage and decrease the ultimate bearing capability to the structures, then fatigue load have caused wholly destroy.
采用焊点疲劳寿命预估方法，通过有限元分析并结合应力计算，即可计算出实际载荷工况下的焊点疲劳损伤。
With the welding spot fatigue lifetime pre-estimation method, by combination of the finite element analysis and stress calculation, the welding spot fatigue damage under actual load can be calculated.
从实验和数值模拟两方面对爆炸载荷对水泥试样的损伤破坏进行了研究。
The cement samples damage and fracture by exploding load was studied by experiment and numerical simulation method.
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