锻压技术

基于无网格法的镁合金等温锻造成形模拟分析

英文标题：Simulation and analysis on isothermal forging for magnesium alloy based on meshless method

分类号：V261.3+2

出版年,卷(期):页码：2023,48(2):10-15

摘要：

对于金属大变形问题，传统的有限元法分析效果不佳，分析过程中易产生网格畸变，故基于无网格法对镁合金的等温锻造成形进行了模拟分析。利用LS-DYNA软件的无网格法分析功能，模拟分析了镁合金锻件的等温锻造成形过程，对比了镁合金在350、400和450 ℃这3种温度下的等温锻造成形结果，通过分析成形的等效应力云图，得出了镁合金更优的等温锻造温度，为450 ℃。结果表明：使用无网格法来分析金属成形中的大变形问题，可以较好地解决有限元法分析过程中产生的网格畸变问题。

For the problem of large metal deformation, the analysis effect of traditional finite element method is poor, and the mesh distortion is easy to occur during the analysis process. Therefore, the isothermal forging process of magnesium alloy was simulated and analyzed based on meshless method. Using the analysis function of meshless method in LS-DYNA software, the isothermal forging process of magnesium alloy forgings was simulated and analyzed, and the isothermal forging results of magnesium alloy at 350, 400 and 450 ℃ were compared to obtain a better isothermal forging temperature of 450 ℃ for magnesium alloy through analyzing the forming equivalvant stress nephogram. The results show that using meshless method to analyze the large deformation in metal forming can better solve the problem of mesh distortion generated during the analysis process for finite element method.

基金项目：

国家自然科学基金面上项目（51875283）

作者简介：王继晨（1999-），男，硕士研究生，E-mail：wangjc054@nuaa.edu.cn ；通信作者：鲍益东（1976-），男，博士，副教授，E-mail：baoyd@nuaa.edu.cn

参考文献：

[1]杨丹妮,朱景川. 新型轻合金的应用及发展趋势[J]. 黑龙江冶金,2016,36(6):45-49.

Yang D N, Zhu J C. Application and development trend of new light alloys [J]. Heilongjiang Metallurgy, 2016,36 (6): 45-49.

[2]徐国锋. 镁合金压铸件在全球汽车轻量化新形势下的机遇与挑战[J]. 资源再生,2017，(11):42-44.

Xu G F. Opportunities and challenges of magnesium alloy die castings under the new situation of global automobile lightweight [J]. Resource Recycling, 2017，(11): 42-44.

[3]Mordike B L. Magnesium and magnesium alloys[J]. Journal of Japan Institute of Light Metals,2001,51(1):2-13.

[4]李昀昊. 镁合金材料的应用现状及发展趋势研究[J]. 世界有色金属,2019，(12):149-150.

Li Y H. Application status and development trend of magnesium alloy materials [J]. World Nonferrous Metals, 2019， (12): 149-150.

[5]付传锋,张钰成,赖周艺,等. 浅谈国内外镁合金等温锻造[J]. 模具工程,2007，(1):47-51.

Fu C F, Zhang Y C, Lai Z Y, et al. The development of isothermal forging process on magnesium domestic and international [J]. Mold & Die Project, 2007，(1): 47-51.

[6]刘红生,邢忠文,杨玉英. 金属体积成形的无网格Galerkin模拟[J]. 材料科学与工艺,2010,18(2):242-244，250.

Liu H S, Xing Z W, Yang Y Y. Meshless Galerkin simulation of metal bulk forming [J]. Materials Science and Technology, 2010,18 (2): 242-244，250.

[7]田华,陈军. 金属体积成形仿真技术的发展概况[J].模具技术,2005，(1):14-17，22.

Tian H, Chen J. Development of metal bulk forming simulation technology [J]. Die and Mold Technology, 2005，(1):14-17，22.

[8]李晶,杨玉英,刘红生. 无网格Galerkin法的理论进展及其应用研究[J]. 材料科学与工艺,2007,15(2):186-191.

Li J, Yang Y Y, Liu H S. Theoretical progress and application research of element-free Galerkin method [J]. Materials Science and Technology, 2007,15(2): 186-191.

[9]路平. 三维金属体积成形过程无网格伽辽金方法及其关键技术研究[D].山东:山东大学,2008.

Lu P. Research on Element Free Galerkin Method and Key Simulation Techniques for Three-dimensional Bulk Metal Forming Processes[D]. Shandong: Shandong University, 2008.

[10]刘永辉,陈军,李从心,等. 金属三维塑性成形过程无网格伽辽金法数值模拟技术[J].上海交通大学学报,2006,40(10):1654-1658.

Liu Y H, Chen J, Li C X, et al. The numerical simulation of three-dimensional metal forming by element-free Galerkin method [J]. Journal of Shanghai Jiaotong University, 2006,40 (10): 1654-1658.

[11]李晶. 金属体积成形数值模拟的无网格Galerkin法研究[D].哈尔滨：哈尔滨工业大学,2007.

Li J. Study on the Element Free Galerkin Method for Numerical Simulation of Metal Bulk Forming [D]. Harbin:Harbin Institute of Technology, 2007.

[12]陈晓珞. 无网格法的研究发展及工程应用简述[J]. 山西建筑,2011,37(26):44-45.

Chen X L. Analysis on research development and engineering application of meshless method [J]. Shanxi Architecture, 2011,37 (26): 44-45.

[13]陶月平. 无网格伽辽金法概述[J]. 城市建设理论研究：电子版,2016，(5)：1-4.

Tao Y P. Overview of element free Galerkin method [J]. Theoretical Research in Urban Construction, 2016，(5)：1-4.

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