Analysis of Stresses Induced in a Polymer Coating Layer due to Temperature Change

J. Ocean Eng. Technol. 2003;17(6):72-76.

온도변화에 대한 고분자 코팅 층에 발생하는 응력 해석

박명규,이상순,서창민

문경대학 자동차기계계열,한국기술교육대학교 메카트로닉스 공학부,경북대학교 기계공학과

Keywords: Boundary Element Analysis, Polymer Coating Layer, Stress Singularity Factor, Interface Stress

핵심용어: 경계요소해석, 폴리머 코팅층, 응력특이계수, 계면응력

Abstract

This paper deals with the stress singularity developed in a polymer layer that is coated to a concrete surface, due to temperature change. The boundary element method is employed to investigate the behavior of interface stresses. The polymeric layer is assumed to be a linear viscoelastic material, and is thermorheologically simple. The order of the singularity is obtained, numerically, for a given viscoelastic model. Numerical results exhibit the relaxation of interface stresses, and large gradients are observed in the vicinity of the free surface.
Results
show that the stress singularity factor is relaxed with time, while the order of the singularity increases with time for the viscoelastic model.