偏置筒体结构由于其相对偏心距较大,其扭转振动效应一般较大,容易成为结构设计的控制因素。论文对偏置筒体进行弹塑性扭转振动效应分析,提出了采用PERFORM-3D对偏置筒体结构弹塑性扭转振动效应的敛散性补充分析的基本方法,并在此基础上,结合工程实例给出了关于偏置筒体抗扭转设计的一些建议。 Bias cylinder structure because of its relative eccentricity, the torsional vibration effect is generally large, easy to become the structural control factor. The paper analyzes the elastic-plastic torsional vibration of the biased cylinder, and presents the basic method of using the PERFORM-3D to supplement and diffuse the elastic-plastic torsional vibration of the biased cylinder. On the basis of this, Some suggestions on the anti-torsion design of biased cylinder are given.