Numerical simulation of thermal fracture in coatings using element free Galerkin method

The work presented, broadens the adeptness of element free Galerkin method (EFGM) for analysis of thermal fracture in case of materials with coatings under plane stress conditions. A modeling approach has been used by clubbing jump function approach with enrichment criterion in order to model multiple weak and strong discontinuities in the domain. The weak discontinuity, i.e., the interface of two materials is modeled via a jump function methodology. The stress fields around the crack tip are modeled using intrinsic enrichment criterion. Modified interaction integral scheme for thermal fracture has been put to use for generating mode-1 stress intensity factors (SIFs). The effect of mechanical properties on crack under sudden temperature change is compared using three cases in which zinc and steel substrates are used (steel/zinc/steel configuration and zinc/steel/zinc configuration) and compared with results of mono-material configuration.