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单层网壳结构弹塑性屈曲分析的离散单元法研究

叶继红 张梅

叶继红, 张梅. 单层网壳结构弹塑性屈曲分析的离散单元法研究[J]. 工程力学, 2019, 36(7): 30-37,47. doi: 10.6052/j.issn.1000-4750.2018.10.0374
引用本文: 叶继红, 张梅. 单层网壳结构弹塑性屈曲分析的离散单元法研究[J]. 工程力学, 2019, 36(7): 30-37,47. doi: 10.6052/j.issn.1000-4750.2018.10.0374
YE Ji-hong, ZHANG Mei. Discrete element method for elastoplastic buckling analysis of single-layer reticulated shells[J]. Engineering Mechanics, 2019, 36(7): 30-37,47. doi: 10.6052/j.issn.1000-4750.2018.10.0374
Citation: YE Ji-hong, ZHANG Mei. Discrete element method for elastoplastic buckling analysis of single-layer reticulated shells[J]. Engineering Mechanics, 2019, 36(7): 30-37,47. doi: 10.6052/j.issn.1000-4750.2018.10.0374

单层网壳结构弹塑性屈曲分析的离散单元法研究

doi: 10.6052/j.issn.1000-4750.2018.10.0374
基金项目: 国家重点研发计划资助项目(2017YFC1500703)
详细信息
    作者简介:

    张梅(1991-),女,江苏南通人,硕士,从事大跨空间结构研究(E-mail:1530713918@qq.com).

    通讯作者: 叶继红(1967-),女,辽宁锦州人,教授,博士,博导,从事大跨空间结构、轻钢结构的抗震、抗火、抗风研究(E-mail:jhye@cumt.edu.cn).
  • 中图分类号: TU399

Discrete element method for elastoplastic buckling analysis of single-layer reticulated shells

  • 摘要: 该文提出离散元塑性区法,即将任意2个球元的接触截面划分成若干小面积,通过各小面积的应力状态描述整个截面的塑性发展过程,较离散元塑性铰法更精确。该文推导了杆系离散元截面应变增量计算公式,建立了截面在三维应力-应变状态下的结构弹塑性本构方程、加卸载准则、截面内力积分公式以及计算分析流程。离散元弹塑性屈曲分析的追踪策略与弹性屈曲分析完全相同,即仍采用离散元力控制法或位移控制法。采用Fortran语言自编程序对若干单层网壳结构算例进行弹塑性屈曲分析,验证了离散元塑性区法的正确性和适用性,拓宽了离散单元法在工程领域的应用范围,为结构分析提供了新路径。
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出版历程
  • 收稿日期:  2018-07-05
  • 修回日期:  2018-10-15
  • 刊出日期:  2019-07-25

单层网壳结构弹塑性屈曲分析的离散单元法研究

doi: 10.6052/j.issn.1000-4750.2018.10.0374
    基金项目:  国家重点研发计划资助项目(2017YFC1500703)
    作者简介:

    张梅(1991-),女,江苏南通人,硕士,从事大跨空间结构研究(E-mail:1530713918@qq.com).

    通讯作者: 叶继红(1967-),女,辽宁锦州人,教授,博士,博导,从事大跨空间结构、轻钢结构的抗震、抗火、抗风研究(E-mail:jhye@cumt.edu.cn).
  • 中图分类号: TU399

摘要: 该文提出离散元塑性区法,即将任意2个球元的接触截面划分成若干小面积,通过各小面积的应力状态描述整个截面的塑性发展过程,较离散元塑性铰法更精确。该文推导了杆系离散元截面应变增量计算公式,建立了截面在三维应力-应变状态下的结构弹塑性本构方程、加卸载准则、截面内力积分公式以及计算分析流程。离散元弹塑性屈曲分析的追踪策略与弹性屈曲分析完全相同,即仍采用离散元力控制法或位移控制法。采用Fortran语言自编程序对若干单层网壳结构算例进行弹塑性屈曲分析,验证了离散元塑性区法的正确性和适用性,拓宽了离散单元法在工程领域的应用范围,为结构分析提供了新路径。

English Abstract

叶继红, 张梅. 单层网壳结构弹塑性屈曲分析的离散单元法研究[J]. 工程力学, 2019, 36(7): 30-37,47. doi: 10.6052/j.issn.1000-4750.2018.10.0374
引用本文: 叶继红, 张梅. 单层网壳结构弹塑性屈曲分析的离散单元法研究[J]. 工程力学, 2019, 36(7): 30-37,47. doi: 10.6052/j.issn.1000-4750.2018.10.0374
YE Ji-hong, ZHANG Mei. Discrete element method for elastoplastic buckling analysis of single-layer reticulated shells[J]. Engineering Mechanics, 2019, 36(7): 30-37,47. doi: 10.6052/j.issn.1000-4750.2018.10.0374
Citation: YE Ji-hong, ZHANG Mei. Discrete element method for elastoplastic buckling analysis of single-layer reticulated shells[J]. Engineering Mechanics, 2019, 36(7): 30-37,47. doi: 10.6052/j.issn.1000-4750.2018.10.0374
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