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圆钢管混凝土偏压长柱屈曲承载力的FEM法分析 被引量:3
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作者 程晓东 叶贵如 +1 位作者 程莉莎 徐兴 《浙江大学学报(工学版)》 EI CAS CSCD 北大核心 2004年第1期79-85,共7页
构造了非线性三维虚拟层合单元法,对5组圆钢管混凝土偏压柱的非线性屈曲承载力进行了三维有限元分析,计算结果与试验结果符合良好.以典型截面形式的圆钢管混凝土偏压长柱为例,对其载荷-变形全过程进行了分析,给出了非线性屈曲承载力与... 构造了非线性三维虚拟层合单元法,对5组圆钢管混凝土偏压柱的非线性屈曲承载力进行了三维有限元分析,计算结果与试验结果符合良好.以典型截面形式的圆钢管混凝土偏压长柱为例,对其载荷-变形全过程进行了分析,给出了非线性屈曲承载力与长细比的关系,研究结果可为圆钢管混凝土柱的承载力设计提供参考. 展开更多
关键词 圆钢管混凝土 三维虚拟层合单元法 非线性屈曲承载力 偏压柱 fem法分析
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Contact analysis and load distribution of double-envelop hourglass worm gearing affected by errors and load
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作者 徐戊矫 《Journal of Chongqing University》 CAS 2003年第2期1-5,共5页
An approach for the contact analysis and load distribution of double-envelop hourglass worm gearing is presented, which is based on a 3-D elastic contact finite element method (FEM) model that accommodates the influen... An approach for the contact analysis and load distribution of double-envelop hourglass worm gearing is presented, which is based on a 3-D elastic contact finite element method (FEM) model that accommodates the influence of errors and load. As compared with existing tooth contact analysis model that assumes rigidity for the contacting surfaces, the proposed model provides a more realistic analysis on the contact patterns, the distribution of contact load and transmission errors. It is also capable of exploring the influence of different errors on meshing performances, the contact deformation, the shift of the contact zone and load share among the meshing tooth-pairs under different load. 展开更多
关键词 double-envelop hourglass worm gearing tooth contact analysis ERRORS LOAD
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