利用复数振型叠加法，这种求解方法能够得出结构动力响应的精确解。
The proposed approach can offer an exact solution for dynamic response of base-isolated structure, through using the complex mode superposition method.
研究一种新的计算方法——以振型叠加法为基础的等效附加塑性荷载法。
A new calculation method, base the method of equivalent additional plastic loads on modes of vibration superposition method is studied.
在精细时程积分法的基础上，将精细积分法与振型叠加法结合起来，提出振型分解精细积分法。
This new method is called the mode decomposition precise integration method because it is the result of the combination of the mode decomposition method with the precise integration method.
从产品已知条件出发，利用有限元、模态综合法和振型叠加法等理论，探索出求产品脆值的新方法。
Based on Known conditions of the product, by using the FE? Modal synthesis and vibration modal congruence theories, this article explores a new product frailty solution.
研究钢筋混凝土梁的动刚度随外荷载的变化规律，对准确分析其动力响应有极其重要意义。采用振型叠加法，导得了弹性加载纯弯梁的动力分析理论，给出了确定梁动刚度的方法。
In this paper the theory of dynamic analysis is proposed by adding again and again normal modes of vibration of rc (reinforced concrete) beams under the elastic loads, and an example is given.
研究钢筋混凝土梁的动刚度随外荷载的变化规律，对准确分析其动力响应有极其重要意义。采用振型叠加法，导得了弹性加载纯弯梁的动力分析理论，给出了确定梁动刚度的方法。
In this paper the theory of dynamic analysis is proposed by adding again and again normal modes of vibration of rc (reinforced concrete) beams under the elastic loads, and an example is given.
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