Publication: The behaviour of three-dimensional elastoplastic crack tip (j-integral) affected by changes of elastic modulus to yield strength and strain hardening.
| datacite.subject.fos | oecd::Engineering and technology::Mechanical engineering::Mechanical engineering | |
| dc.contributor.author | Luqman Hakim bin Abdul Aziz | |
| dc.date.accessioned | 2025-09-08T08:58:12Z | |
| dc.date.available | 2025-09-08T08:58:12Z | |
| dc.date.issued | 2024-07-12 | |
| dc.description.abstract | Current J-integral estimation for a straight through thickness-crack consistently show a decrease pattern towards the crack front with its maximum and minimum values being at the midplane and free-surface, respectively for elasto-perfectly plastic material. The aim of this project is to examine the polynomial expansion proposed by Yusoff and Yusof (2019) [23] for other material responses, and to propose a flexible mathematical expression equation that can be used to estimate the variation of Jintegral of through-thickness of crack model for all conditions (nonhardening, hardening response with effect of Young’s modulus to yield strength and strain hardened material). In this project, the profile of local J at the crack-tip and J far at the outer boundary were examined numerically using finite element analysis based on a three-dimensional crack model using boundary layer formulation method. The crack model was constructed by referring the linear elastic crack tip singularity field following Williams (1957) [29] series expansion in obtaining in-place displacement to generate a dominant elastic stress field surrounding the crack-tip plasticity and Ramberg Osgood’s stress-strain curve for hardening rate of the material. The results of J-integral obtained from simulation analysis were fitted based on an exponential curve estimation. Finally, it is envisaged that the proposed analytical expression could help to estimate the local J of crack-tip deformation for cracked specimens without the need to conduct full-fledge crack tip finite element analysis. | |
| dc.identifier.uri | https://erepo.usm.my/handle/123456789/22520 | |
| dc.language.iso | en | |
| dc.title | The behaviour of three-dimensional elastoplastic crack tip (j-integral) affected by changes of elastic modulus to yield strength and strain hardening. | |
| dc.type | Resource Types::text::report::technical report | |
| dspace.entity.type | Publication | |
| oairecerif.author.affiliation | Universiti Sains Malaysia |