期刊文献+

基于无网格Galerkin法模拟金属塑性成形的研究

Simulation of Metal Plastic Forming by Element-free Galerkin Method
下载PDF
导出
摘要 利用无网格Galerkin法和小应变弹塑性理论,建立了金属塑性成形的EFG求解模型,其中采用变刚度法进行增量迭代计算,并利用坐标变换方法使之满足本质边界条件。编程对压印和斜轧两个塑性成形过程进行了模拟研究,得出了节点数目和增量步数对计算精度的影响规律。模拟结果表明所提出的方法在模拟金属塑性成形问题上是可行的,为基于EFG法的大变形问题的研究奠定了基础。 The EFG (Element-free Galerkin) model for metal plastic forming is presented based on element-free Galerkin method and the small-strain elasto-plastic theory. Incremental iteration calculation is realized by using changeable stiffness method, and the transformation method is utilized to satisfy the essential boundary conditions. Indentation and skew rolling problems are simulated. The influence of the number of discrete nodes and iterative steps on the calculation accuracy is studied. The result shows that our model is feasible for solving metal plastic forming problems.
出处 《机械科学与技术》 CSCD 北大核心 2009年第1期71-74,共4页 Mechanical Science and Technology for Aerospace Engineering
基金 国家自然科学基金项目(50475143) 湖南省优秀青年项目(06B096) 湘潭大学博士启动基金项目(06QDZ16)资助
关键词 无网格GALERKIN法 小应变弹塑性理论 金属塑性成形 EFG method small-strain elasto-plastic theory metal plastic forming
  • 相关文献

参考文献11

  • 1胡自化,杨端光,李益锋,张平.基于刚粘塑性有限元模拟的汽轮机叶轮模锻的预成形优化[J].机械科学与技术,2007,26(4):482-486. 被引量:6
  • 2李靖谊,王化明,张中元.基于非线性有限元的钣金件成形极限研究[J].机械科学与技术,2002,21(4):517-519. 被引量:4
  • 3李长生 熊尚武 RodgiguesJ.金属塑性加工过程无网格方法数值模拟[M].沈阳:东北大学出版社,2004..
  • 4Guo Y M, et al. A nonlinear rigid-plastic analysis of metal forming problem using the rigid-plastic collocation method [ J ]. Advances in Engineering Software, 2005, (36) :234-242
  • 5Alfaro I, et al. Meshless methods with application to metal forming[J]. Computer Methods in Applied Mechanics and Engineering, 2006, (195) :6661-6675
  • 6张雄,宋康祖,陆明万.无网格法研究进展及其应用[J].计算力学学报,2003,20(6):730-742. 被引量:109
  • 7Belytsehko T, et al. Element free Galerkin methods[J]. International Journal for Numerical Methods in Engineering, 1994, (37) :229 - 256
  • 8Li G Y, Belytscko T. Element-free Galerkin method for contact problems in metal forming analysis[ J]. Engineertng Computations, 2001 ,(18) :62-78
  • 9Sangpil Y, Jiun-Shyan C. Accelerated method for metal forming simulation[J]. Finite Element In Analysis and Design, 2002, (38) :937 -948
  • 10Beissel S, Belytschko T. Nodal integration of the element-free Galerkin method[J]. Computer Methods in Applied Mechan. ics and Engineering, 1996,139(1-4) :49 -74

二级参考文献137

  • 1张锁春.光滑质点流体动力学(SPH)方法(综述)[J].计算物理,1996,13(4):385-397. 被引量:84
  • 2贝新源,岳宗五.三维SPH程序及其在斜高速碰撞问题的应用[J].计算物理,1997,14(2):155-166. 被引量:31
  • 3梁炳文 等.钣金成形性能[M].北京:机械工业出版社,1999..
  • 4欧文DFJ 刘忠(译).塑性力学有限元--理论与应用[M].北京:兵器工业出版社,1989..
  • 5中国机械工程学会锻压学会.锻压手册[M].北京:机械工业出版社,1993..
  • 6Cordes L W, Moran B. Treatment of material discontinuity in the element-free Galerkin method[J]. Comput Methods Appl Mech Engrg,1996,139:75-89.
  • 7Zhang X,Lu M W,Wegner J L. A 2-D meshless model for jointed rock structures[J]. Int J Numer Methods Engrg,2000,47(10):1649-1661.
  • 8Beissel S, Belytschko T. Nodal integration of the element-free Galerkin method[J]. Comput Methods Appl Mech Engrg,1996,139:49-74.
  • 9Organ D, Fleming M, Terry T. Continuous meshless approximations for nonconvex bodies by diffraction and transparency[J]. Comput Mech,1996,18:225-235.
  • 10Smolinski P, Palmer T. Procedures for multi-time step integration of element-free Galerkin methods for diffusion problems[J]. Comput Struct,2000,77:171-183.

共引文献117

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部