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Nearly cloaking for the elasticity system with residual stress

Tuesday, March 21, 2017 - 11:00am - 12:00pm
Lind 305
Yi-Hsuan Lin (Hong Kong University of Science and Technology)
Abstract This work extends the study of the nearly cloaking scheme to the elasticity system with residual stress in two or three dimensional spaces, which is an anisotropic elasticity system. It is worth to mention that there are no minor symmetric properties for the elastic tensor with residual stress and this system is invariant under a coordinate transformation. Therefore, we think the elasticity system residual stress model is more natural than the isotropic elasticity system in designing the elastic cloaking medium in the physical sense. In addition, the main difficulty of treating this problem lies in the fact that there are no layer potential theory for the residual stress system. Instead, we will derive suitable elliptic estimates for the elasticity system residual stress by comparing with the Lamé system to achieve desired results.