带筋管充液压形主要缺陷形式及控制方法

发布时间：2018-03-10 09:10

本文选题：带筋管　切入点：机械压形　出处：《塑性工程学报》2016年06期 　论文类型：期刊论文

【摘要】：采用有限元模拟结合物理实验的方法,研究了不同筋板高厚比的带筋管机械压形和充液压形的主要缺陷形式,分析了各类缺陷产生的原因和影响因素,并给出了缺陷的控制方法。实验结果表明:内压显著改变了带筋管成形过程中的受力条件,在合适的内压辅助下带筋管的筋板和筒体均可顺利发生曲率增大或减小变形,在1MPa内压下,成形的平直段长度达到97mm。充液压形管内凹塌陷的缺陷可以通过控制内压消除,通过适当增加筋板厚度或减小筋板高度,使筋板高厚比低于一定值可以避免筋板起皱缺陷的产生;筋板高厚比和充液内压大小对缺陷有很大的影响。
[Abstract]:By means of finite element simulation and physical experiment, the main defect forms of mechanical compression and hydraulic filling of stiffened pipe with different ratio of height to thickness of stiffened plate are studied, and the causes and influencing factors of various defects are analyzed. The experimental results show that the internal pressure has changed the stress condition of the stiffened tube during forming, and the curvature of the stiffened tube and the tube body can be increased or reduced smoothly with the help of the appropriate internal pressure. Under internal pressure of 1 MPA, the length of the straight section is up to 97 mm. the defect of concave collapse in the hydraulic filled tube can be eliminated by controlling the internal pressure, by increasing the thickness of the stiffened plate or decreasing the height of the stiffened plate. When the ratio of height to thickness of stiffened plate is lower than a certain value, the wrinkling defect can be avoided, and the ratio of height to thickness of stiffened plate and the internal pressure of liquid filling have great influence on the defect.
【作者单位】：哈尔滨工业大学(威海)材料科学与工程学院;日照职业技术学院机电工程学院;
【基金】：国家自然科学基金资助项目(51405102;51475121)
【分类号】：TG394

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