兑关锁, 赵国景. 降阶积分中刚度的奇异性分析[J]. 工程力学, 1998, 15(3): 44-50.
引用本文: 兑关锁, 赵国景. 降阶积分中刚度的奇异性分析[J]. 工程力学, 1998, 15(3): 44-50.
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Dui Guansuo, Zhao Guojing. HE SINGULARITY OF THE ELEMENT STIFFNESS MATRIX FOR THE REDUCED INTEGRATION[J]. Engineering Mechanics, 1998, 15(3): 44-50.
Citation: Dui Guansuo, Zhao Guojing. HE SINGULARITY OF THE ELEMENT STIFFNESS MATRIX FOR THE REDUCED INTEGRATION[J]. Engineering Mechanics, 1998, 15(3): 44-50.
shu

降阶积分中刚度的奇异性分析

HE SINGULARITY OF THE ELEMENT STIFFNESS MATRIX FOR THE REDUCED INTEGRATION

    摘要
  • 摘要: 本文研究了薄厚板壳有限单元统一性理论中,由于采用降阶积分而使得刚度矩阵产生奇异的问题。得到了根据插值函数来计算刚度矩阵秩的计算公式,并对几种降阶积分单元进行了验算。

     

    Abstract: The singularity of thick and thin plate element stiffness matrix due to the use of the reduced integration on the basis of the finite element is investigated.A formula based on the interpolation for the rank of the element stiffness matrix is presented,and some reduced integration elements are examined.

     

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