The calculation of the spectral density of non-linear wave forces is presented in detail, based on linearized approach and polynomial-approximated approach, respectively.
该文详细介绍了采用线性化法和多项式逼近法求解非线性波浪力谱密度的过程。
2
While the actual stiffness of engine stator is used for modeling, the stiffness of bearings is linearized by iteration to avoid the non linearization of the whole engine.
确定计算模型时，发动机定子按实际刚度；为了避开整机非线性问题，轴承刚度采用迭代算法进行线性化。
3
The structure is modeled as non-proportionally damped system based on equivalent linearized parameters which is used for practical design.