Fatigue Crack Propagation Analysis With The Adaptive Finite Element Mesh
Generator
Author(s)
I. Kovše
Abstract
Fatigue crack propagation analysis with the
adaptive finite element mesh generator
I . KovSe
InStitut za metalne konstrukcije, Slovenia
Abstract
The numerical simulation of the fatigue crack propagation in a non-symmetrical
fracture mechanics' specimen is presented in this paper. The procedure is automatic
to that point that only the specimen's geometry, the starting point of the
crack and material parameters are needed as inputs and the output of the simulation
is, among other things, a change in compliance, the crack path and the functions
Kl (a), Krr (a), N (a), i.e, stress intensity factors and number of cycles depending
on the crack length. The finite element method is used in the calculations. Crack
growth is simulated in a series of crack increments of finite size. A finite element
mesh is automatically generated after each crack increment. Numerical results are
compared to the results of the experiment on a specimen with non-standard geometry.
During the experiment the crack length was
Keywords
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