吉林大学学报(工学版) ›› 2019, Vol. 49 ›› Issue (5): 1593-1599.doi: 10.13229/j.cnki.jdxbgxb20180556

• • 上一篇    

双层剖分式超高压模具数值模拟及实验

依卓(),付文智(),李明哲   

  1. 吉林大学 辊锻工艺研究所，长春 130022
  • 收稿日期:2018-06-04 出版日期:2019-09-01 发布日期:2019-09-11
  • 通讯作者: 付文智 E-mail:yzjlu15@163.com;fwz@jlu.edu.cn
  • 作者简介:依卓(1988-),男,博士研究生.研究方向:超高压设备及数值模拟.E-mail:yzjlu15@163.com
  • 基金资助:
    国家自然科学基金项目(51075186)

Numerical simulation and experiment on double⁃layered split ultrahigh pressure die

Zhuo YI(),Wen-zhi FU(),Ming-zhe LI   

  1. Roll Forging Research Institute, Jilin University, Changchun 130022, China
  • Received:2018-06-04 Online:2019-09-01 Published:2019-09-11
  • Contact: Wen-zhi FU E-mail:yzjlu15@163.com;fwz@jlu.edu.cn

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摘要：

为获得更高的承压能力，研究了弧面型和平面型两种双层剖分式超高压模具，通过有限元方法对比分析了两种双层剖分式超高压模具的应力分布和承压能力。结果表明：平面型双层剖分式超高压模具能有效降低压缸和第一层支撑环应力，模具承压能力得到显著提高。与弧面型双层剖分式超高压模具相比，平面型双层剖分式超高压模具压缸的Mises应力和最大剪应力分别降低了27.2%、33.2%；第一层支撑环的Mises应力和最大剪应力分别降低了14.8%、4.7%。根据最大畸变能理论和最大剪应力理论，平面型双层剖分式超高压模具的承压能力分别提高了35.6%、47.1%。实验结果表明：平面型压缸双层剖分式超高压模具具有更高的承压能力。

关键词: 材料合成与加工工艺, 高压合成, 剖分式模具, 承压能力, 数值模拟

Abstract:

In order to obtain a higher pressure capacity, the camber-type and plane-type double-layered split ultrahigh pressure dies were investigated. The stress distributions and pressure capacities of the two types of ultrahigh pressure dies were studied by finite element method. The results show that the novel plane-type double-layered split ultrahigh pressure die can effectively decrease the stress levels of the cylinder and first layer supporting ring. The pressure capacity of ultrahigh pressure die is significantly improved accordingly. Compared with the camber-type double-layered split ultrahigh pressure die, the Mises stress and maximum shear stress on the cylinder of plane-type double-layered split ultrahigh pressure die are decreased by 27.2% and 33.2%, respectively. Meanwhile, the Mises stress and maximum shear stress of the first layer supporting ring are decreased by 14.8% and 4.7%, respectively. The pressure capacities of the plane-type double-layered split ultrahigh pressure die are increase by 35.6% and 47.1% according to the maximum distortion energy criterion and maximum shear stress criterion. The experimental results show that novel plane-type double-layered split ultrahigh pressure die has a remarkably higher pressure capacity.

Key words: material synthesis and processing technology, synthesize under high pressure, split-type die, pressure capacity, numerical simulation

中图分类号: 

  • TG375

图1

双层剖分式超高压模具结构"

图2

压缸及支撑环剖分块受力情况"

图3

超高压模具1/2有限元模型"

图4

压缸Mises应力分布云图"

图5

压缸最大剪应力分布云图"

图6

剖分支撑环Mises应力分布云图"

图7

剖分支撑环最大剪应力分布云图"

图8

压缸主应力分布"

图9

剖分支撑环主应力分布"

图10

压缸最大应力随压缸内壁压力的变化"

图11

液压机及装配后的双层剖分式超高压模具"

图12

破裂失效后的压缸剖分块"

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