固定结合面参数的计算机模拟计算

COMPUTATION OF JOINT STIFFNESS PARAMETERS OF A SPECIFIC STRUCTURE WITH A FIXED JOINT SURFACE

对一个包含固定结合面的具体结构 ,利用有限元分析程序计算了结合面刚度参数和结合面位置对结构模态的影响。结果表明 ,描述结合面切向刚度大小的参数对结构的扭振刚度模态的影响比对纵向振动模态和弯曲模态的影响显著 ;结合面法向刚度大小的参数对纵向振动模态的影响比对弯曲、扭振模态的影响显著 ;接合面的位置对结构的固有频率也有较为明显的影响。

By using finite element analysis program, the models for computation of stiffness parameters of a specific structure with a fixed joint surface are developed. The computation shows that parameters reflecting the tangential stiffness have more significant effects on torsion mode of structure than those on extensional vibration mode and flexural mode. The parameters reflecting normal stiffness have more obvious effects on extensional vibration mode than those on flexural mode and torsion mode. The location of joint surface has a close relation with the natural frequency of the structure.