【摘要】 一般而言,节点有限元分析是单独建立节点模型,再施加近似边界条件进行有限元分析,但这种方法存在较多的人为假定边界等因素。采用嵌入法,即将节点模型和整体结构分析模型建立一起共同分析,以一种新型的双拱支承体系中部分关键节点为例(包括拱脚支撑节点、铸钢节点和管桁架节点),进行了详细有限元分析,详细考察这些细部节点构造的安全性。在分析的过程中采用嵌入法,较好地解决了边界加载的难题。结果表明,基于嵌入法进行关键节点有限元细化分析是可行的,且可以很好地解决边界加载的难题。更多还原

【Abstract】 As a general rule,the node finite element analysis establishes the node model alone,and then imposes similar model boundary conditions for finite element analysis,but this approach assumes that there is a larger number of man-made factors such as the border.This article is a detailed study of node FEA,using an embedded method model and overall structural analysis model building together with a new type of analysis,double-arch supporting system key node for example including arch springing,cast steel node and tube truss node.The analysis result indicates that the essential node finite element refinement analysis based on the embedded method is feasible,and may the very good solution boundary load problem.更多还原