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INVESTIGATION ON DYNAMIC BEHAVIOR OF A PERIODIC BEAM STRUCTURE CARRYING SPRING-MASS SYSTEM BY DYNAMIC STIFFNESS METHOD

机译:动态刚度法调查周期梁结构的动态行为

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This paper deals with the investigation of the dynamics of a periodic beam structure carrying multiple spring-mass systems by using dynamic stiffness method (DSM), within which flexural, compressional, and torsional vibrations are taken into account. The local dynamic stiffness matrices for individual beams and spring-mass systems are then assembled into global dynamic stiffness matrices so as to calculate vibration transmission from excitation source to flexible beamlike foundations. The finite element method (FEM) investigation is carried out to validate and demonstrate the accuracy and efficiency of our present formulation in modelling the dynamic behaviour of complex periodic beam structures. In addition, parametric influences on vibration transmission are addressed, including different lumped masses, connecting angles, and lower layer spring arrangements.
机译:本文涉及通过使用动态刚度法(DSM)在其中考虑弯曲,压缩和扭转振动,研究了携带多个弹簧质量系统的周期光束结构的动力学。然后将各个梁和弹簧质量系统组装到全局动态刚度矩阵中的局部动态刚度矩阵,以便计算从激发源到柔性束型基础的振动传递。进行有限元方法(FEM)调查,以验证和展示我们对复杂周期光束结构的动态行为建模的表明的准确性和效率。另外,解决了对振动传动的参数影响,包括不同的块状质量,连接角度和下层弹簧布置。

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