Using spherical indentation to determine creep behavior with considering empirical friction coefficient

doi:10.1016/j.euromechsol.2024.105276

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Using spherical indentation to determine creep behavior with considering empirical friction coefficient
	Du, Rou 3; Song, Hengxu 2,3; Liu, Xiaoming 2,3; Wei, Yueguang 1
刊名	EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
	2024-05-01
卷号	105 页码:10
关键词	Bayesian inference Spherical indentation Creep behavior Frictional contact
ISSN号	0997-7538
DOI	10.1016/j.euromechsol.2024.105276
通讯作者	Liu, Xiaoming(xiaomingliu@imech.ac.cn)
英文摘要	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.
资助项目	Innovation Promotion Association CAS[2018022]
WOS关键词	PLASTIC PROPERTIES ; MODEL ; IDENTIFICATION ; PARAMETERS ; STRESS
WOS研究方向	Mechanics
语种	英语
WOS记录号	WOS:001199771400001
资助机构	Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94947]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Liu, Xiaoming
作者单位	1.Peking Univ, Coll Engn, Beijing 100190, Peoples R China 2.UCAS, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Du, Rou,Song, Hengxu,Liu, Xiaoming,et al. Using spherical indentation to determine creep behavior with considering empirical friction coefficient[J]. EUROPEAN JOURNAL OF MECHANICS A-SOLIDS,2024,105:10.
APA	Du, Rou,Song, Hengxu,Liu, Xiaoming,&Wei, Yueguang.(2024).Using spherical indentation to determine creep behavior with considering empirical friction coefficient.EUROPEAN JOURNAL OF MECHANICS A-SOLIDS,105,10.
MLA	Du, Rou,et al."Using spherical indentation to determine creep behavior with considering empirical friction coefficient".EUROPEAN JOURNAL OF MECHANICS A-SOLIDS 105(2024):10.