大型挤压机用圆挤压筒一般都采用组合式结构以提高其强度。文中应用接触单元对组合式圆挤压筒在有无工作压力下的受力情况进行了数值模拟,获取了应力以及位移的分布状况,并和由Lame公式所得的理论解进行了比较和误差分析,结果非常吻合,为多层套挤压筒设计提供了依据。 Large extrusion presses with a round cylinder are generally used modular structure to enhance its strength. In this paper, the contact unit is used to simulate the stress of the combined circular extrusion cylinder under the working pressure. The distribution of stress and displacement is obtained and compared with the theoretical solution obtained by Lame formula. The error analysis , The result is very consistent, provided a basis for multi-layer extrusion sleeve design.