基于形状记忆合金弹簧的张拉膜结构风振控制探讨

DISCUSSION ON WIND VIBRATION CONTROL OF SHAPE MEMORY ALLOY SPRING-BASED TENSIONED MEMBRANE STRUCTURE

利用有限元程序ANSYS,按非线性有限元理论,将膜结构离散为空间的三角形单元,依托APDL语言编制程序,对膜结构的风振进行分析。根据膜结构在风荷载作用下的反应,提出基于形状记忆合金弹簧的控制模型,降低膜结构对风荷载的敏感程度。通过对比节点位移时程曲线的最大值,表明采用该控制思路和控制模型是可行的。

This paper used finite element program ANSYS and non-linear finite element theory to disperse the membrane structure into spatial triangular cells, and then developed program with APDL language to analyze the wind vibration of membrane structure. Based on the reaction of membrane structure under wind load, shape memory alloy spring-based control model was proposed to reduce the sensitivity of the membrane structure to wind load. After comparison of the maximum value on node displacement travel-time curve, it was shown that this control concept and control model were feasible.