Release Time:2022-10-16  Hits:

Date of Publication: 2022-10-10

Journal: 固体火箭技术

Institution: 运载工程与力学学部

Issue: 5

Page Number: 635-638

ISSN: 1006-2793

Abstract: Based on the symplectic eigen-solutions and a special solution of the sectorial wedge dissimilar materials, an analytical singular element with arbitrary order accuracy was presented, which can be applied to analyzing bimaterial mode I interface crack under Dugdale-Barenblatt (D-B) model with bridging tractions. Combined with conventional FEM, the singular element can be used to obtain length of plastic zone and crack tip opening displacement (CTOD) in the D-B model. Numerical results show that the method possesses high accuracy with less calculation.

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