온도변화에 대한 고분자 코팅 층에 발생하는 응력 해석

• Published in: Han-guk haeyang gonghak hoeji (Online) Vol. 17; no. 6; pp. 72 - 76
• Main Authors: 박명규(MYUNG-KYU PARK), 이상순(SANG-SOON LEE), 서창민(CHANG-MIN SUH)
• Format: Journal Article
• Language: Korean
• Published: 한국해양공학회 2003
• Subjects: 해양공학; Polymer Coating Layer 폴리머 코팅층; Boundary Element Analysis 경계요소해석; Stress Singularity Factor 응력특이계수; Interface Stress 계면응력
• ISSN: 1225-0767; 2287-6715

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.