Interface Corners of Magneto-Electro-Elastic Materials

• Main Authors: HaoYang, 楊濠
• Other Authors: Chyanbin Hwu
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/89900371285828247026

碩士 === 國立成功大學 === 航空太空工程學系碩博士班 === 101 === The constitutive law, strain-displacement relation and equilibrium equation of elastic materials can be extended to cover the magneto-electric-elastic materials. We developed a Stroh-like formalism of magneto-electric- elastic materials. Singular orders of interface corners can be determined by material properties, geometry, and boundary conditions. We developed the near-tip solutions and introduced a new definition of stress intensity factors. In order to avoid the problem of stress singularity around the tip of interface corner, the path-independent H-integral is suggested to overcome the problem. The integral contains two systems: one is the actual system; the other is auxiliary system. It has been proved that H-integral is an efficient and accurate method to calculate the stress intensity factors.