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BEM computation of DSIF in cracked viscoelastic plates. (English) Zbl 0789.73079

Summary: Dynamic stress intensity factors of cracked linear viscoelastic solids under conditions of plane stress are computed by the boundary element method in conjunction with the numerical Laplace transform and the correspondence principle of linear viscoelasticity. Quadratic isoparametric conventional and quarter-point boundary elements are employed. The multidomain approach is used in cases where symmetry cannot be invoked. Dynamic stress intensity factors are computed for cracked viscoelastic rectangular plates subjected to suddenly applied loads, and comparisons are made against results obtained by other numerical methods.

MSC:

74S15 Boundary element methods applied to problems in solid mechanics
74R99 Fracture and damage
74K20 Plates
74D99 Materials of strain-rate type and history type, other materials with memory (including elastic materials with viscous damping, various viscoelastic materials)
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References:

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