Then, an equivalent linearization method is applied to get its linearized stiffness matrix. The estimating method for the equivalent fundamental frequency of the membrane is deduced.
应用等效线性化方法得到方程组的线性化刚度矩阵,给出了结构等效一阶频率的计算方法;
2
Numerical experiments confirmed the validity of the proposed method and show that the linearizationmatrixof the nonlinear system is a good choice for the linear part.
数值算例验证了本文算法的有效性,并表明非线性系统的线性化矩阵作为线性部分是比较合理的选择。
3
Moreover, a method to design the filter of convolution linearization is proved by using the statistic and the matrix theories.