[FEM][Midas][Abaqus][Midas2Abaqus] 钢柱屈曲分析 (Buckling Analysis of Steel Column)

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底部固支的H型钢悬臂柱,顶部竖直向下作用轴压力,分析构件的屈曲模态。为了考虑翼缘或腹板的局部屈曲,可采用壳单元进行建模。本例分别采用Midas Gen及Abaqus软件进行模拟。

  • Midas Gen Model

  • Midas Gen Results

(a)一阶屈曲模态(屈曲因子:8.24E+005)(绕工字钢的弱轴)

(b)二阶屈曲模态(屈曲因子:1.976E+006)(绕工字钢的强轴)

(c)三阶屈曲模态(屈曲因子:1.976E+006)(绕工字钢轴向扭转)

  • Midas2Abaqus Model

为了进行Abaqus分析,采用Midas2Abaqus软件进行模型转换。

  • Abaqus Model

  • Abaqus Results

(a)一阶屈曲模态(屈曲因子:8.26583E+005)(绕工字钢的弱轴)

(b)二阶屈曲模态(屈曲因子:1.98061E+006)(绕工字钢的强轴)

(c)三阶屈曲模态(屈曲因子:1.976E+006)(绕工字钢轴向扭转)

由以上两个软件分析结果可知,Midas Gen及Abaqus的分析结果基本一致,一阶屈曲模态为绕工字钢的弱轴,二阶屈曲模态为绕工字钢的强轴,三阶屈曲模态为绕工字钢轴向的扭转屈曲。


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