원문정보
초록
영어
Application of a very high internal pressure on the thick-walled pressure vessel induces beneficial compressive tangential residual stresses near the bore of the pressure vessel after unloading the internal pressure. However, a reverse yielding due to the Bauschinger effect during the unloading process causes the reduction of the compressive residual stress near the bore. In order to evaluate the autofrettage residual stress distributions of the thick-walled pressure vessel, the Bauschinger effects were considered. Magnitudes of the compressive residual stresses at the bore determined by considering the Bauschinger effects decreased by about 25 percent, compared to the case of linear elastic unloading, i.e., without Bauschinger effects. Measured residual stress distributions agreed fairly well with the calculated distributions considering the Bauschinger effects.
목차
1. 서론
2. 잔류응력 분포
2.1 이론적 잔류응력 분포
2.2 바우싱거 효과 계수
2.3 바우싱거 효과를 고려한 잔류응력 분포
3. 잔류응력 측정
4. 결론
후기
References