Finite element analysis is used to model
bonded joints, products and structures. Initially a stress analysis
is carried out to indicate high stress regions. Depending on the objective
of the analysis, it may be necessary to include the non-linear (elastic-plastic)
properties of the adhesive in the model and geometric non-linearity
for higher deformation situations.
If fatigue and fracture are to be assessed, a fracture analysis
is carried out. Cracks are introduced into the model and the strain
energy release rate (G) derived as a function of the crack length
(a), is output.
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Fracture mechanics approach for designing adhesive
joints using FEA |
