CAJ | 학술논문

利用有限元分析软件，根据弹塑性有限元接触问题的相关理论建立了可膨胀管膨胀过程的力学模型。对壁厚6 mm的108 mm管进行膨胀过程的计算机模拟，着重研究在不同膨胀率下，膨胀锥角与锥体完成胀管所需的液压力的变化关系；确定不同膨胀率下所需的液压力最小的锥角值，即获得最优的锥角；研究了最优锥角下膨胀管的力学性能，通过参数优化设置，为现场应用提供理论依据。
이용유한원분석연건，근거탄소성유한원접촉문제적상관이론건립료가팽창관팽창과정적역학모형。대벽후6 mm적108 mm관진행팽창과정적계산궤모의，착중연구재불동팽창솔하，팽창추각여추체완성창관소수적액압력적변화관계；학정불동팽창솔하소수적액압력최소적추각치，즉획득최우적추각；연구료최우추각하팽창관적역학성능，통과삼수우화설치，위현장응용제공이론의거。
By utilizing the finite element ansys software and basing on the related theory of elastic-plastic finite element contact problem,the mechanics model of the expansion pipe in an expanding process was constructed.By simulating the expansion process of the 108 pip whose wall thickness is 6 mm,the relationship between the fluid pressure was studied,which is needed to complete the expansion and the different expansion ratio and expansive cone angle.It confirmed the best angle in different expanding inflation and researched mechanical properties of expansion pipe at the opti-mal angle.And it will provide an important guide to the field application.