HE SINGULARITY OF THE ELEMENT STIFFNESS MATRIX FOR THE REDUCED INTEGRATION

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.

Citation:

Dui Guansuo, Zhao Guojing. HE SINGULARITY OF THE ELEMENT STIFFNESS MATRIX FOR THE REDUCED INTEGRATION[J]. Engineering Mechanics, 1998, 15(3): 44-50.

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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