为了获得并列双支管内高压成形工艺参数对管件成形性的影响规律,采用有限元分析和实验相结合的方法进行内压和加载路径对并列双支管内高压成形过程中支管高度和壁厚分布规律影响的研究。研究结果表明:随着内压的增大,支管高度逐渐增大,当内压为64 MPa时,管件出现破裂,支管高度为18 mm;随着内压增大支管顶部壁厚减薄率呈现增大的趋势,而支管底部壁厚基本保持为2 mm。在不同加载路径下,随着拐点内压的增大,支管高度、支管顶部壁厚减薄率及减薄速率均逐渐增大,路径3所成形的支管高度达18.3 mm。支管底部最终壁厚随着拐点内压增大基本维持在2 mm,支管底部壁厚在成形过程受拐点内压影响较小。有限元分析结果与实验结果具有较好的一致性。 In order to obtain the rule of the influence of high-pressure forming process parameters on the formability of the pipe, the finite element analysis and experimental methods were used to analyze the distribution of pipe height and wall thickness during the high-pressure forming process of the parallel double- Impact studies. The results show that with the increase of internal pressure, the height of branch pipe gradually increases. When the internal pressure is 64 MPa, the pipe is broken, and the height of branch pipe is 18 mm. With the increase of internal pressure, Increasing trend, while the bottom of the branch pipe wall thickness remained at 2 mm. Under different loading paths, the height of branch pipe, the thinning rate of wall thickness at the top of branch pipe and the thinning rate all increased with the increase of the inflection pressure, and the branch pipe formed by path 3 reached a height of 18.3 mm. The final wall thickness at the bottom of the branch pipe was basically maintained at 2 mm with the increase of the inflection point pressure. The wall thickness at the bottom of the branch pipe was less affected by the inflection pressure during the forming process. The results of finite element analysis and experimental results have good agreement.