基于ANSYS的梁-壳单元连接方法研究

发布时间：2018-03-17 09:22

本文选题：梁单元　切入点：壳单元　出处：《建筑结构》2017年S2期 　论文类型：期刊论文

【摘要】：梁单元和壳单元节点自由度存在差异,当组合使用这两种单元时,其连接处需要恰当处理。以两个结构为例,研究了ANSYS仿真模拟中如何实现梁单元与壳单元的连接,介绍了直接约束方程法、刚性区法,刚性梁法、MPC法这几种可以实现两种不同类型单元的连接方法。通过对变形,应力,和应力云图的分析,比较了每种方法的优缺点及计算精度。综合而言,MPC法比其他方法适用性强,计算精度高,且更接近实际连接状态。连接范围对计算结果有一定影响,进一步探究了最佳约束范围。结果表明,用实际结构交界面范围内的节点建立连接范围,计算效果最佳,扩大或缩小连接范围均会产生较大误差。
[Abstract]:There is a difference in the degree of freedom between the beam element and the shell element. The connection between the beam element and the shell element should be dealt with properly when the two elements are combined. Taking two structures as an example, how to realize the connection between the beam element and the shell element in the simulation of ANSYS is studied. The direct constraint equation method, rigid zone method, rigid beam method and MPC method are introduced to realize the connection of two different types of elements. The advantages and disadvantages of each method and the calculation accuracy are compared. In a word, the MPC method is more suitable than other methods, and its accuracy is higher, and it is closer to the actual connection state. The connection range has certain influence on the calculation results. The results show that using the nodes in the interface range of the actual structure to establish the connection range is the best calculation result and the large error will be caused by enlarging or narrowing the connection range.
【作者单位】：石家庄铁道大学土木工程学院;石家庄铁道大学大型结构健康诊断与控制研究所;
【基金】：国家自然科学基金资助(项目批准号U1334209)
【分类号】：TU31

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