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From the derivation, it is seen that the modal method can also be used to solve this kind of impact problem.
从公式推导可以看出，模态分析法同样可以用来解决此类冲击问题。
Because the method utilizes modal transform, the problem of fault inception Angle can be avoided, which occurs in almost all conventional methods.
这种方法由于采用了模式变换，避免了传统行波方法中存在的受故障起始角的影响的问题。
A modal damping optimization method for general damped structures is developed in this paper.
研究了一般阻尼结构的模态阻尼优化设计方法。
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