| Using spherical indentation to determine creep behavior with considering empirical friction coefficient | |
Du R(杜柔)1; Song HX(宋恒旭)1,2; Liu XM(刘小明)1,2 ; Wei, Yueguang3
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| Corresponding Author | Liu, Xiaoming([email protected]) |
| Source Publication | EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
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| 2024-05-01 | |
| Volume | 105Pages:10 |
| ISSN | 0997-7538 |
| Abstract | Indentation testing is a common technique for characterizing the mechanical properties of materials. When it comes to assessing the yield behavior of metals, conical indentation is often favored due to its ability to induce significant plastic deformation at relatively shallow indentation depths. On the other hand, spherical indentation is typically chosen for evaluating metal creep behavior, as it helps minimize the influence of plastic deformation on creep measurements. In spherical indentation tests, the friction at the contact interface is particularly crucial, given the larger contact area and more pronounced slip zones. However, accurately determining the friction coefficient at the contact interface is a complex multi-scale challenge, with the exact coefficient varying based on specific testing conditions and surface treatments. Consequently, empirical friction coefficients are frequently employed, often without thorough justification. In this work, we proposed Bayesian inference method for obtaining the creep constitutive behavior of alloys through spherical indentation tests. Our model considers not only the complexity of creep law, but also the indentation friction, which is unable to consider in most spherical indentation tests with traditional treatment. By using experimental data of spherical indentation tests on 310S stainless steel and pure nickel alloy from literature, present study demonstrates the effectiveness of the Bayesian inference approach, with the inferred constitutive models exhibiting well agreement with uniaxial creep behavior. Furthermore, the method considers the friction coefficient as an extra factor in inferring creep constitutive behavior from indentation tests. |
| Keyword | Bayesian inference Spherical indentation Creep behavior Frictional contact |
| DOI | 10.1016/j.euromechsol.2024.105276 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001199771400001 |
| WOS Keyword | PLASTIC PROPERTIES ; MODEL ; IDENTIFICATION ; PARAMETERS ; STRESS |
| WOS Research Area | Mechanics |
| WOS Subject | Mechanics |
| Funding Project | Innovation Promotion Association CAS[2018022] |
| Funding Organization | Innovation Promotion Association CAS |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Liu, Xiaoming |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/94948 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 2.UCAS, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Peking Univ, Coll Engn, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Du R,Song HX,Liu XM,et al. Using spherical indentation to determine creep behavior with considering empirical friction coefficient[J]. EUROPEAN JOURNAL OF MECHANICS A-SOLIDS,2024,105:10.Rp_Au:Liu, Xiaoming |
| APA | 杜柔,宋恒旭,刘小明,&Wei, Yueguang.(2024).Using spherical indentation to determine creep behavior with considering empirical friction coefficient.EUROPEAN JOURNAL OF MECHANICS A-SOLIDS,105,10. |
| MLA | 杜柔,et al."Using spherical indentation to determine creep behavior with considering empirical friction coefficient".EUROPEAN JOURNAL OF MECHANICS A-SOLIDS 105(2024):10. |
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