矩阵位移法求梁的频率和振型

Derivation of rate and vibration mode of beam by using matri displacement method

针对自振频率和振型是结构重要的动力特性参数,用矩阵位移法分析了梁弹性振动,推导出梁刚度矩阵和质量矩阵计算公式,借助于计算机快速求出梁的自振频率和振型,并通过工程实例证明了矩阵位移法求梁的频率和振型的可行性。

Aiming at the fact that self vibration rate and vibration mode are important dynamic parameter of structure, the paper analyzes vibration of the beam by using matri displacement method, deduces rigid matri and quality matri of beam, and then calculates the self vibration rate and vibration mode of the beam by using computer, it also proves the feasibility of the method through taking practical project as example.