冰激振动引起的交变应力，将会使海上石油钢结构发生疲劳与断裂玻坏。
The alternate stress stimulates vibration ice, makes the offshore petroleum steel construction fracture because of the fatigue factor.
海冰-结构的动力相互作用、冰激振动及冰载荷的识别问题，仍是目前工程海冰界的核心和热点问题。
Dynamic interactions of sea ice with offshore structures, ice-induced vibrations and ice loads identification, are still the hot and key problems in ice engineering.
最后，根据锯齿型冰力模型得出自激振动与连续挤压破坏发生的转变速率。
Then transition velocity of self-excited vibration and continuous crushing is got bu the model of saw-tooth force function.
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