结构非线性动力方程的精细积分算法

The Precise Integration Algorithm for Nonlinear Dynamic Equations of Structures

基于线性方程精细积分的思路，对具有惯性、阻尼、刚度非线性的动力方程及参变非线性动力方程提出了一种较高精度线性化精细积分迭代计算算法，算例表明该算法可用较大的步长取得满意的计算精度，并可在较大的线性化区间获得较高的计算精度。

Based on the idea of the Precise Integration for linear dynamic equations, a hig her accurate linear and iterative algorithm of the Precise Integration for the t ime varying dynamic equations with nonlinear inertia and nonlinear damping and n onlinear stiffness is presented. The computation examples show that he computati on accuracy is higher and satisfactory via the proposed algorithm and the higher computation accuracy can also be obtained even in a longer computation interval.