Abstract

With alumina ceramics to copper brazement of cylindrical shape, the thermal stress analysis was carried out by finite element method. Elastic and plastic behaviour was considered to copper, but only elastic behaviour was considered to alumina. Also material properties of alumina and copper were considered in not constant values but variable functions dependent on temperature. The result of analysis is shown that maximum tensile longitudinal stress is occurred at perimeter of alumina side interface and maximum compressive radial and tangential stresses are occurred at center of alumina side interface. Because of bending effect, tensile raidial and tangential stresses are occurred at near bottom of alumina, far from interface.

본 연구에서는 알루미나 세라믹(Al$_{2}$O$_{3}$)재료와 순수구리를 티타늄 용자재로써 접합한 브레이징 접합물내의 냉각후 잔류응력을 유한요소법으로 사용하여 해석하였다.

Keywords

• Alumina Ceramics;
• Copper;
• Brazement;
• Thermal Stress;
• Residual Stress;
• Finite Element ethod;
• Axisymmetric Solution Domain

• 알루미나 세라믹;
• 구리;
• 브레이징 접합물;
• 열응력;
• 잔류응력;
• 유한요소법;
• 축대칭 해석영역;