| Analysis of spherical indentation of materials with plastically graded surface layer |
| Yuan FP(袁福平) ; Jiang P(姜萍); Xie JJ(谢季佳); Wu XL(武晓雷); Yuan, FP; Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China.
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| 发表期刊 | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
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| 2012-02-01
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| 卷号 | 49期号:3-4页码:527-536 |
| ISSN | 0020-7683
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| 摘要 | In the present work, a comprehensive parametric study for establishing contact mechanics of instrumented normal spherical indentation on homogeneous materials and materials with plastically graded surface layer (PGSL) was undertaken by dimensional analysis and finite element modeling. The spherical indentation response for homogeneous materials can be described only by two dimensionless parameters: strain hardening exponent and a unified parameter that can describe effects of both the normalized yield strength and the normalized indentation depth. The influences of these two parameters were investigated for a wide range of engineering materials, and the results may be used as an estimate of loading response and pile-up/sink-in behavior when the material properties are known. In the materials with PGSL, a linear gradient in yield strength, and no variation in elastic modulus and strain hardening exponent were explored. The indentation response of the materials with PGSL can be described only by three dimensionless parameters: the normalized indentation depth, the dimensionless strength gradient parameter, and the normalized PGSL thickness. The effects of these three parameters were studied systematically. The normalized pile-up/sink-in parameter is found to be an increasing function of the strength gradient parameter. The normalized pile-up/sink-in parameter increases (decreases) with increasing PGSL thickness for a fixed positive (negative) gradient case at large indentation depth. The results also indicate that the materials with positive PGSL can bear more loads and have significantly more resistance to contact crack formation. |
| 关键词 | Spherical Indentation
Plastically Graded Materials
Contact
Dimensional Analysis
Finite Element Modeling
Mechanical Attrition Treatment
Instrumented Indentation
Stainless-steel
Elastic Properties
Pile-up
Gradients
Solids
Depth
Nanocrystallization
Resistance
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| 学科领域 | 冲击动力学
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| URL | 查看原文
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| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000300743800011
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| 项目资助者 | The authors would like to acknowledge the financial support of NSFC (Grants Nos. 11002151 and 11072243), 973 Project of China (No. 2010CB631004) and Knowledge Innovation Program of Chinese Academy of Sciences (No. KJCX2-EW-L03).
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| 课题组名称 | LNM材料介观力学性能的表征
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| 论文分区 | 一类/力学重要期刊
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/46669
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| 专题 | 非线性力学国家重点实验室
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| 通讯作者 | Yuan, FP; Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China. |
推荐引用方式
GB/T 7714 |
Yuan FP,Jiang P,Xie JJ,et al. Analysis of spherical indentation of materials with plastically graded surface layer[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2012,49,3-4,:527-536.
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| APA |
袁福平,姜萍,谢季佳,武晓雷,Yuan, FP,&Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China..(2012).Analysis of spherical indentation of materials with plastically graded surface layer.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,49(3-4),527-536.
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| MLA |
袁福平,et al."Analysis of spherical indentation of materials with plastically graded surface layer".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 49.3-4(2012):527-536.
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