Elastic fracture mechanics analysis of bi-materials using boundary element method
Bimaterial interfacial cracks in two isotropic elastic half plates that have different Young Modulus was investigated. The influence of circular hole with inclusions on the interfacial cracks tip stress intensity factor was also analysed. Tensile loadings acting on the matrix and orientated pe...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
Nanyang Technological University
2022
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| Online Access: | https://hdl.handle.net/10356/158970 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Bimaterial interfacial cracks in two isotropic elastic half plates that have different Young
Modulus was investigated. The influence of circular hole with inclusions on the interfacial
cracks tip stress intensity factor was also analysed. Tensile loadings acting on the matrix and
orientated perpendicular to the direction of the crack length was evaluated. The multi-region
boundary element method (BEM) using quadratic quarter-point crack-tip element, commonly
known as Quarter Node Shift (QNS) was employed in modelling the crack. The interaction of
the circular inclusion may induce propagating or shielding effects on the SIF of the crack tip,
which depends on variable parameters, namely the relative elastic properties of the matrices,
angular orientation of inclusion, geometry of circular inclusion, distance of the circular
inclusion from the crack tip and also in the cases where the matrix are subjected to biaxial
loadings. |
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