| .基于多弹簧模型的空间梁柱单元(II):参数分析[J].计算力学学报,2008,25(1): |
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| 基于多弹簧模型的空间梁柱单元(II):参数分析 |
| Multi-spring model beam element (II):parameter analysis |
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| DOI：10.7511/jslx20081003 |
| 中文关键词: 多弹簧模型,剪切变形,塑性区长度,弹簧布置 |
| 英文关键词:multi-spring model,shear deformation,length of plastic zone,layout of spring |
| 基金项目: |
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同济大学土木工程学院 上海200092(李国强，孙飞飞)
，上海师范大学建筑工程学院 上海201418(方明霁，张强)
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| 摘要点击次数: 1239 |
| 全文下载次数: 24 |
| 中文摘要: |
| 为模拟地震作用时杆件在变动轴力和双向弯曲的耦合特点,基于简化纤维模型的多弹簧单元模型近年被广泛应用。本文作者在相关论文中提出了考虑剪切变形弹塑性刚度影响的多弹簧模型空间梁柱单元,杆件的计算模拟精度除了取决于单元模型之外,还决定于两个重要参数:弹簧位置及个数布置、塑性区长度,本文将针对其进行参数分析并提出合理建议取值。本文最后还提出了模拟杆件残余应力的合理弹簧布置方式。 |
| 英文摘要: |
| To simulate the coupling behavior of member subjected to variable axial force and bi-bending,the multi-spring model is applied widely.Author has presented an improved model which considering the plastic stiff influence of plastic-region shear deformation in other paper.The simulation precision not only depends on the element model but also closely relates to two important parameters: the layout of spring and length of plastic region.Paper focuses on the two parameter analysis and puts forward reasonable suggestions.At last,paper also offers the appropriate spring layout to simulate the residual stress. |
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