A thermo-mechanical fracture analysis of linear elastic materials using XIGA

In this work, the extended isogeometric analysis (XIGA) is presented for the analysis of cracks in elastic material subjected to thermal, mechanical, and thermo-mechanical loading. The comparative study on the effect of mechanical and combined thermo-mechanical load on stress intensity factors (SIFs) is performed. Two types of cracks, i.e., isothermal and adiabatic crack, is considered for the simulation. The crack is modeled using suitable enrichment functions. A modified domain-based interaction integral approach is used to extract the SIFs. Several simulations are performed to validate the accuracy of the results. Moreover, the effect of discontinuities (e.g., voids) on SIFs is analyzed.

Automated summary

This work presents the application of extended isogeometric analysis (XIGA) for analyzing cracks in elastic materials under thermal, mechanical, and thermo-mechanical loading. The study compares the effects of mechanical and combined thermo-mechanical load on stress intensity factors (SIFs). Two types of cracks, isothermal and adiabatic cracks, are considered for simulation. Suitable enrichment functions are used to model the cracks, and a modified domain-based interaction integral approach is employed to extract the SIFs. Multiple simulations are performed to validate the accuracy of the results, and the effects of discontinuities (such as voids) on SIFs are analyzed.