취성재료의 3개체 연삭가공시 응력해석 = Stress Analysis of 3 Body Abrasive Machining of Brittle Materials

다국어 초록 (Multilingual Abstract)

Subsurface stresses of workpiece indented by a rotating abrasive in lapping processes are analyzed using two dimensional finite element technique.
The workpiece is assumed as an elastoplastic half-space, the abrasive as a rigid rectangular bar, and the lap as a rigid half-space.
The stresses in the case of indentation is also analyzed to examine the effects of tangential traction.
It is demonstrated that an approximately circular plastically-deformed region is evolved below the contact point and that a local maximum of tensile principal stress occurs at the intersection between the boundary of plastically-deformed region and the extension of diagonal line of abrasive.
Moreover, the local maximum value occurring in a loading period is greater than that in the residual stresses, implying that subsurface cracks can be nucleated in the loading period.

목차 (Table of Contents)

• Ⅰ. 서 론
• Ⅱ. 본 론
• 1. 문제의 정의
• 2. 유한요소 모델
• 3. 결과 및 토의
• Ⅲ. 결 론