【摘要】 为了比较桁架模型和刚架模型的差异,结合了一种简单试验结构,实测了试验刚架和桁架的特定截面的内力和中节点位移;同时应用ANSYS软件对两种模型进行了有限单元模拟.验证了刚架和桁架两种力学模型的有效性,通过试验和数值计算的结果,得到了两种结构的受力特点,分析了实际桁架和理想桁架的差别,对结构设计和教学具有一定的参考意义.更多还原

【Abstract】 In order to compare the truss model and the frame model,a simple experimental structure is adopted in this paper.For several special sections of the experimental truss and frame,test data are obtained, including the internal force on those sections and the middle node displacements.At the same time,the finite element simulation for the two kinds of models is performed by using ANSYS software.By comparing experimental results with theoretical calculation results the models are verified and mechanical characteristics of the two structures are obtained.The difference between the actual truss and the ideal truss and that between experimental value and theoretical value are analyzed through finite element simulation.Some conclusions are drawn for structure design and teaching.更多还原