Effect of plasticity on the coefficient of restitution of an elastoplastic sphere impacting an elastic plate

doi:10.1016/j.ijsolstr.2021.03.023

IMECH-IR > 非线性力学国家重点实验室

	Effect of plasticity on the coefficient of restitution of an elastoplastic sphere impacting an elastic plate
	Peng Q(彭青)1,2 ; Jin, Y.1,2 ; Liu XM(刘小明)1,2 ; Wei YG(魏悦广)3
通讯作者	Liu, X.(xiaomingliu@imech.ac.cn)
发表期刊	INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
	2021-07-01
卷号	222 页码:11
ISSN	0020-7683
摘要	A sphere impacting a plate is different from impacting a half-space bulk, because energy in the former case can be dissipated in a form of flexural wave propagating on the plate. Such energy loss by the elastic wave can be explained by the Zener model; however, this model is only valid for low-velocity impact with elastic Hertzian contact law. For high-velocity impact with contact plasticity, the Zener model is not valid any ore because energy dissipation by plasticity may take a large fraction, so that the Zener model, which ignores plasticity, will overestimate the coefficient of restitution (COR). In order to study how much the plasticity affects the sphere impacting the plate, we developed a modified Zener model by employing the contact plasticity into the controlling equation. Using the developed model, we firstly presented a thickness-dependent yielding velocity (yielding impact velocity depends on the thickness of the plate), above which the contact plasticity should be taken into account. What is more, we presented a semi-analytical solution to predict the COR over a large range of plate thickness. Meanwhile, finite element simulations were carried out to prove that the present model can give enough accuracy for the high velocity impact. (C) 2021 Elsevier Ltd. All rights reserved.
关键词	Sphere-plate impact Contact plasticity Modified Zener model Coefficient of restitution Thickness dependent COR
DOI	10.1016/j.ijsolstr.2021.03.023
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000656157300010
关键词[WOS]	CONTACT ; MODEL ; WAVES
WOS研究方向	Mechanics
WOS类目	Mechanics
资助项目	National Natural Science Foundation of China[12022210] ; National Natural Science Foundation of China[12032001] ; National Natural Science Foundation of China[11772334] ; National Natural Science Foundation of China[11890681] ; Youth Innovation Promotion Association CAS[2018022] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040501]
项目资助者	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Strategic Priority Research Program of the Chinese Academy of Sciences
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Liu, X.
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/86929
专题	非线性力学国家重点实验室
作者单位	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 100871, Peoples R China
推荐引用方式 GB/T 7714	Peng Q,Jin, Y.,Liu XM,et al. Effect of plasticity on the coefficient of restitution of an elastoplastic sphere impacting an elastic plate[J]. INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,2021,222:11.
APA	彭青,Jin, Y.,刘小明,&魏悦广.(2021).Effect of plasticity on the coefficient of restitution of an elastoplastic sphere impacting an elastic plate.INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES,222,11.
MLA	彭青,et al."Effect of plasticity on the coefficient of restitution of an elastoplastic sphere impacting an elastic plate".INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 222(2021):11.

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