By formula deriving and data calculating, the errors resulted from the two different methods are obtained, and their effects on solving practical engineering problems revealed.
并通过公式推导及具体数据计算，找出两种不同处理结果的误差，及对解决工程实际问题的影响。
While deriving the finite element equation, get the cable's strain formula considering the big distortion, get its geometry rigidity matrix and elastic rigidity matrix.
在有限元法推导方程的过程中，考虑到拉索大变形的应变表达式，求得它的几何刚度矩阵和弹性刚度矩阵。
Under the circumstances that there are multi noise sources, we can get the effective method of how to judge main the noice source by deriving the formula of acoustic pressure evel decibel.
在有多个噪声源的情况下，通过推导声压级分贝值的运算公式，得出了判定主噪声源的有效方法。
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