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分析总结了传统振型叠加方法应用于空间网格结构动力反应分析难以适用的原因,结合结构固有振型与高效动力分析的LDR振型,提出一种基于振型遴选与振型构造的动力反应分析算法。采用Matlab进行编程,并对两个典型空间网格结构进行数值模拟分析。通过数值结果比较,验证该方法的正确性、有效性及其计算效率。
The reason that the traditional modal superposition method is difficult to apply to the dynamic response analysis of the space grid structure is analyzed and summarized. Combining the natural mode of structure and the LDR mode of high-efficiency dynamic analysis, a dynamic response based on mode selection and mode shape is proposed. Analysis algorithm. Using Matlab programming, and two typical space grid structure numerical simulation analysis. The numerical results are compared to verify the correctness, validity and computational efficiency of the method.