通用有限元分析程序中耦联弹簧的处理

Processing Method of Coupling Springs in General FEM Analysis Programs

对结构中含有耦联弹簧的问题 ,部分通用有限元程序没有提供直接的处理单元。从力学分析入手 ,给出了一种简单的变换处理方法。用此方法 ,使用通用有限元分析程序 SAP90及 ALGOR91 ,分别对芜湖长江大桥主航道斜拉桥进行了动力响应分析 ,并将其分析结果和自编程序 (可以考虑耦联弹簧的影响 )的分析结果作了对比。分析表明 ,该方法可以简便有效地解决结构中的耦联弹簧问题。

Based on some basic mechanics analysis, a processing method of coupling springs using general FEM analysis programs is presented in this paper. Using this proposed method, the dynamic responses of the cable-stayed bridge at Wuhu Yangtze River in Anhui province are studied with the general FEM analysis programs SAP90 and ALGOR91. The analyzed results by SAP90 and ALGOR91 are compared with each other, and also with the results by the FEM program developed by the author. The results show that the processing method of coupling springs presented in this paper is a simple and effective method.