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金属成形数值模拟算法及软件开发

周洋靖 冯志强 宁坡 汪昌勇

周洋靖, 冯志强, 宁坡, 汪昌勇. 金属成形数值模拟算法及软件开发[J]. 西南交通大学学报, 2019, 54(4): 855-862. doi: 10.3969/j.issn.0258-2724.20170442
引用本文: 周洋靖, 冯志强, 宁坡, 汪昌勇. 金属成形数值模拟算法及软件开发[J]. 西南交通大学学报, 2019, 54(4): 855-862. doi: 10.3969/j.issn.0258-2724.20170442
ZHOU Yangjing, FENG Zhiqiang, NING Po, WANG Changyong. Numerical Algorithm and Software Development for Metal Forming[J]. Journal of Southwest Jiaotong University, 2019, 54(4): 855-862. doi: 10.3969/j.issn.0258-2724.20170442
Citation: ZHOU Yangjing, FENG Zhiqiang, NING Po, WANG Changyong. Numerical Algorithm and Software Development for Metal Forming[J]. Journal of Southwest Jiaotong University, 2019, 54(4): 855-862. doi: 10.3969/j.issn.0258-2724.20170442

金属成形数值模拟算法及软件开发

doi: 10.3969/j.issn.0258-2724.20170442
基金项目: 国家自然科学基金资助项目(11772274)
详细信息
    作者简介:

    周洋靖(1988—),男,博士研究生,研究方向为工程力学,E-mail:yjzhou1988@qq.com

    通讯作者:

    冯志强(1963—),男,教授,博士,研究方向为计算力学、工程力学,E-mail:feng@ufrst.univ-evry.fr

Numerical Algorithm and Software Development for Metal Forming

  • 摘要: 以实现拥有部分算法特色的金属成形定制化CAE (computer-aided engineering)软件为目的,在自主开发的OmtDesk平台基础上,嵌入金属成形数值计算程序.首先,以双势理论为基础,运用Uzawa算法求解金属成形中的接触摩擦问题;其次,采用建立在更新拉格朗日框架上的返回映射算法,求解金属成形中材料非线性问题;最后,通过压缩回弹和挤压成形两个数值算例,验证了自主开发的金属成形定制化CAE软件FEM/Form的准确性与通用性,并将求解结果与ANSYS对比.在压缩回弹算例中,采用ANSYS得到10–3 mm量级的穿透量,相同算例采用FEM/Form则能将穿透量控制在10–7 mm量级,说明采用双势接触模块能更加精确地控制金属成形数值模拟中的穿透量,使金属成形过程更加准确.

     

  • 图 1  压缩回弹模型几何参数

    Figure 1.  Geometry of the compression springback model

    图 2  最大加载时网格变形与接触细部

    Figure 2.  Details of mesh deformation and frictional contact at the moment of maximum loading

    图 3  两种接触方法渗透量比较曲线

    Figure 3.  Comparison between the penetration capability of two contact methods

    图 4  最大卸载时网格变形与回弹细部

    Figure 4.  Details of mesh deformation and compression springback at the moment of maximum unloading

    图 5  弹塑性块体加/卸载von Mises应力云图

    Figure 5.  von Mises stress nephogram of an elastoplastic block during loading and unloading

    图 6  弹塑性块体加/卸载塑性应变云图

    Figure 6.  Plastic strain nephogram of an elastoplastic block during loading and unloading

    图 7  挤压成形模型

    Figure 7.  Model for extrusion forming

    图 8  锻件挤压过程中的网格变形

    Figure 8.  Grid deformation during the extrusion process of a forged piece

    图 9  挤压成形过程

    Figure 9.  Extrusion forming process

    图 10  高摩擦系数下锻件发生卷边(μ = 0.80 )

    Figure 10.  Curling selvedge of a forged piece with a high coefficient of friction (μ = 0.80)

    表  1  不同材料参数对回弹量的影响

    Table  1.   Influence of different material parameters on resilience

    $\mu $ (${\sigma _{\rm{y}}}=300$MPa)${{{U}}_{{\rm{spb}}}}$/${\rm{mm}}$${\sigma _y}$/${\rm{MPa}}$ ($\mu {\rm{ = 0}}{\rm{.10}}$)${{{U}}_{{\rm{spb}}}}$/${\rm{mm}}$
    FEM/FormANSYSFEM/FormANSYS
    0.000.253 5600.108 7702000.122 0870.072 006
    0.050.202 6260.110 2402500.136 2960.087 519
    0.100.150 3690.101 2103000.150 3690.101 210
    0.150.117 6940.087 4723500.163 9350.114 070
    0.200.084 3060.078 6724000.179 3040.127 840
    0.250.022 6180.074 4494500.186 9240.141 030
    下载: 导出CSV
  • 柳玉起. 计算机模拟在金属成形行业的应用和发展现状[J]. 锻造与冲压,2005(6): 16-16.

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    FENG Zhiqiang, LIU Jiantao, PENG Lei, et al. New development of CAE platform and computational mechanics software[J]. Journal of Southwest Jiaotong University, 2016, 51(2/3): 519-524. doi: 10.3969/j.issn.0258-2724.2016.03.010
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出版历程
  • 收稿日期:  2017-06-09
  • 修回日期:  2018-06-26
  • 网络出版日期:  2019-04-28
  • 刊出日期:  2019-08-01

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