文献类型：期刊文献

中文题名：液压胀合成形复合管弯曲失效行为研究

英文题名：Study on Bending Failure Behavior of Hydraulically Expanded Clad Pipe

作者：姚兴军[1];范贤勇[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2022

卷号：41

期号：3

起止页码：63

中文期刊名：实验室研究与探索

外文期刊名：Research and Exploration In Laboratory

收录：CSTPCD;;北大核心:【北大核心2020】；

语种：中文

中文关键词：不锈钢衬里复合管;剩余应力;弯曲变形;弯曲半径

外文关键词：stainless steel-lined clad pipe;residual stress;bending deformation;bend radius

摘要：推导了液压胀合成形不锈钢衬里复合管弯曲变形时,其外管内外壁及内管内壁发生屈服时极限弯矩理论计算公式,给出了弯曲塑性角与弯曲半径的关系式。建立了3种不同胀合压力下不锈钢衬里复合管弯曲变形数值模拟计算模型,通过有限元方法计算得到了复合管弯曲变形过程的极限弯矩与轴向应变。计算结果表明,胀合压力越大,极限弯矩越大,而弯曲半径就越小。最后,对不锈钢衬里复合管进行了4点弯曲实验,验证了理论计算方法和数值模拟方法的一致性。
The theoretical calculation formula of the limit bending moment is derived when the outer pipe and the inner pipe of stainless steel-lined are clad pipe. The relationship of the bending plastic angle and bending radius is obtained. Three numerical simulation calculation models for bending deformation of stainless steel-lined clad pipe under three different expansion pressures are established. The limit bending moment and axial strain of the clad pipe are calculated by the finite element analysis, when the clad pipe is bent and deformed. The calculation results show that the greater the hydraulic expansion pressure, the greater the limit bending moment and the smaller the bending radius. Finally, a four-point bending experiment of the stainless steel-lined clad pipe is carried out, verifies the theoretical calculation method and numerical simulation method.