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当计入几何非线性及刚弹耦合项时，弹性连杆机构的动力学方程是非线性的，本文对这一类型的时变非线性振动方程的求解方法进行了研究，给出了一种实用迭代方法，并用这一方法研究了几何非线性对弹性连杆机构动力学性能的影响，得出了一些有益的结论。
When the geometric nonlinearity and the just elastic coupling term are taken into account, the dynamic equation of the elastic linkage is non-linear. In this paper, the method of solving this kind of time-varying nonlinear vibration equation is studied, and a practical Iteration method, and use this method to study the influence of geometric nonlinearity on the dynamic performance of the elastic linkage, and draw some useful conclusions.