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复杂空间曲面的参数化网格划分方法研究 被引量:5
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作者 谢世坤 黄菊花 +1 位作者 杨国泰 黄端伟 《塑性工程学报》 CAS CSCD 北大核心 2005年第1期29-33,共5页
根据参数化有限元分析的要求, 提出了参数化网格划分的思想, 并详细地叙述了参数化网格划分的方法和实现途径。针对汽车覆盖件这种复杂的三维曲面这一特例, 编写了参数化网格划分的程序。最后利用该程序对某汽车公司匹卡车的第一横梁和... 根据参数化有限元分析的要求, 提出了参数化网格划分的思想, 并详细地叙述了参数化网格划分的方法和实现途径。针对汽车覆盖件这种复杂的三维曲面这一特例, 编写了参数化网格划分的程序。最后利用该程序对某汽车公司匹卡车的第一横梁和某汽车油杯进行了网格划分, 成功地实现了网格划分的参数化。 展开更多
关键词 参数化有限元分析 参数化网格划分 UNIGRAPHICS 动态结构体数组
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Experimental and Numerical Studies of Failure Modes and Load-Carrying Capacity of Through-Diaphragm Connections
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作者 Bin Rong Shuai Liu +1 位作者 Zhenyu Li Rui Liu 《Transactions of Tianjin University》 EI CAS 2018年第4期387-400,共14页
Shear failure in panel zones and plastic hinges in steel beams are the two major failure modes of connections between concrete-filled steel tubular(CFST) columns and steel beams. To investigate the behavior of this ty... Shear failure in panel zones and plastic hinges in steel beams are the two major failure modes of connections between concrete-filled steel tubular(CFST) columns and steel beams. To investigate the behavior of this type of connection in both modes,two through-diaphragm connections were tested under cyclic and monotonic loadings and the load-carrying capacity,ductility,and strength of degradation of connections were discussed. Using ABAQUS software,we developed nonlinear finite-element models(FEMs) to simulate the load-carrying capacity and failure modes of the connections under monotonic loading. The finite-element(FE) analysis and test results showed reasonable agreement for the through-diaphragm connections,which confirms the accuracy of FEMs in predicting the load-carrying capacity and failure modes of connections. Based on the validated FEM,a parametric study was then conducted to investigate the infl uence of the thicknesses of the tube and diaphragm on the load-carrying capacity and failure modes of these connections. The results indicate that the strength,stiff ness,and load-carrying capacity are infl uenced less by the thickness of the diaphragm,and more by the thickness of the steel tube. According to the FE analysis results,it can be found that the critical condition between the two failure modes is determined by the shear resistance and bending resistance. 展开更多
关键词 Through-diaphragm CONNECTIONS Failure mode finite-element analysis parametric analysis Monotonic LOADING Cyclic LOADING
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