张文福;严威;刘迎春;邓云;邓世林;李洋;

• 1:南京工程学院建筑工程学院

• 2:东北石油大学土木建筑工程学院

摘要(Abstract)：

基于板—梁理论,建立均布荷载作用下跨中布置侧向扭转支撑的双轴对称工字形简支梁弯扭屈曲的总势能方程,其中侧向位移和转角模态试函数选用6项三角级数形式。引入量纲一的参数,根据势能驻值原理,获得简支梁弯扭屈曲的量纲一的临界弯矩解析解。采用1stOpt优化分析软件,拟合简支梁弯扭屈曲量纲一的临界弯矩计算公式,并与ANSYS有限元解进行对比。结果表明:量纲一的临界弯矩计算公式的理论解与有限元解吻合较好,误差在±5%以内,可为工程设计提供参考。

关键词(KeyWords)：简支梁;弯扭屈曲;板—梁理论;扭转支撑;能量变分法;均布荷载;有限元法

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金项目(51178087);国家自然科学基金项目(51578120);; 南京工程学院校级科研基金项目(YKJ201617)

作者(Author):张文福;严威;刘迎春;邓云;邓世林;李洋;

Email:

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