TiB2/Al复合材料喷丸后微区残余应力的有限元模拟
Finite Element Simulation of Micro-region Residual Stress of Shot Peened TiB2/Al Composite
摘 要
采用ANSYS/LS-DYNA有限元分析软件建立了颗粒增强TiB2/Al复合材料的喷丸模型, 并对喷丸后残余应力分布进行了预测;然后对复合材料进行了喷丸试验, 对残余应力进行了检测; 将试验结果与模拟结果进行了对比。结果表明: 该复合材料喷丸后残余应力分布的试验结果与模拟结果基本相符; 喷丸后最表层部分增强体呈拉应力状态, 在材料残余压应力场内, 由于增强体和基体材料力学性能的差异, 增强体的残余应力值普遍大于基体中的。
有限元模拟
喷丸
残余应力
composite
finite element simulation
shot peening
residual stress
Abstract
A model of shot peening of the particle reinforced TiB2/Al composites was built with ANSYS/LS-DYNA finite element simulation software, then the residual stress distribution after shot peening was predicted. The shot peening tests were performed on the composites, and the residual stresses were measured, then the test results were compared with the simulation results. It is shown that the experimetal results of residual stress distribution of the composites after shot peening were in agreement with the simulated one. The reinforcement at the outmest layer after shot peening showed tensile stress state. In the residual pressure stress field, residual stress in the reinforcement was generally greater than that in the substrate, which was resulted from the difference of the mechanical properties of the two materials.
中图分类号 TB333
所属栏目
基金项目 国家自然科学基金资助项目(50771066)
收稿日期 2009/12/17
修改稿日期 2010/8/3
网络出版日期
作者单位点击查看
备注卞凯(1984-), 男, 江苏扬州人, 硕士研究生。
引用该论文: BIAN Kai,JIANG Chuan-hai,LUAN Wei-zhi. Finite Element Simulation of Micro-region Residual Stress of Shot Peened TiB2/Al Composite[J]. Materials for mechancial engineering, 2011, 35(1): 86～88
卞凯,姜传海,栾卫志. TiB2/Al复合材料喷丸后微区残余应力的有限元模拟[J]. 机械工程材料, 2011, 35(1): 86～88
被引情况:
【1】张阳,聂玉峰,武亚涛, "基于数字图像处理和有限元预测纳米颗粒增强聚合物基复合材料的弹性模量",机械工程材料 38, 99-102(2014)
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参考文献
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【2】LIU H T, SUN L Z. Effects of thermal residual stresses on effective elastoplastic behavior of metal matrix composites[J].International Journal of Solids and Structures, 2004, 41: 2189-2203.
【3】邵军超, 刘越.颗粒增强金属基复合材料力学行为有限元模拟研究现状[J].材料导报, 2007, 21(9): 111-115.
【4】LLORCA J, SEGURADO J. Three-dimensional multiparticle cell simulations of deformation and damage in sphere-reinforced composites[J].Materials Science & Engineering A, 2004, 365: 267-274.
【5】徐娜, 宗亚平, 张芳, 等.颗粒形状对铝基复合材料力学行为影响的模拟[J].东北大学学报: 自然科学版, 2007, 28(2): 213-216.
【6】XU D, SCHMAUDER S, SOPPA E. Influence of geometry factors on the mechanical behavior of particle and fiber reinforced composites[J].Comput Mater Sci, 1999, 15: 295-301.
【7】LI Y, RAMESH K T. Influence of particle volume fraction, shape, and aspect ratio on the behavior of particle-reinforced metal-matrix composites at high rates of strain[J].Acta Materialia, 1998, 46: 5633-5646.
【8】HARADA Y, FUKAUARA K, KOHAMADA S. Effects of microshot peening on surface characteristics of high-speed tool steel[J].Journal of Materials Processing Technology, 2008, 201: 319-324.
【9】路会龙, 姚平喜, 刘海英.基于ANSYS/LS-DYNA的受控喷丸工艺过程仿真[J].机械设计与制造, 2009(2): 214-216.
【10】YI H Z, MA N H, LI X F, et al. High-temperature mecha-nics properties of in situ TiB2p reinforced Al-Si alloy composites[J].Mater Sci Eng A, 2006, 419: 12-17.
【11】COURTNEY T H. Mechanical behavior of materials[M].New York: McGraw-Hill, 1990.
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