In the present paper an interrupter shell assembly that forms an essential part of electrical switch gears is considered for creep analysis and subjected to thermal loads in addition to static leads actuated by circuit breakers. This exercise forms a part of the design evaluation of a new product. The shell is made out of a high strength fiberglass reinforced thermoset polyester sheet molding compound. A conventional finite element formulation based on the classical theory of semicoupled thermoelasticity is employed. The creep phenomenon is considered as an initial strain problem and a time hardening law is followed for creep analysis in the secondary zone. The structure is discretized by bilinear thick and thin flat shell isoparametric elements. Results show the contrasting deformation patterns, creep and thermomechanical stresses with the strains for two temperature cases. Creep characteristics of the shell are depicted for the entire service life of the component.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.