Spring-back behaviors of Ti-6Al-4V sheet under effect of strain rate

doi:10.1016/j.ijmecsci.2023.108646

IMR OpenIR

	Spring-back behaviors of Ti-6Al-4V sheet under effect of strain rate
	Li, Hao 1,2; Xie, Si-Rui 3; Zhang, Shi-Hong 1; Chen, Shuai-Feng 1; Song, Hong-Wu 1; Xu, Yong 1; Pokrovsky, Artur I.4; Khina, Boris B.4
通讯作者	Zhang, Shi-Hong(shzhang@imr.ac.cn) ; Xu, Yong(yxu@imr.ac.cn)
	2023-12-15
发表期刊	INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
ISSN	0020-7403
卷号	260 页码:16
摘要	By using Impact Hydro-bending (IHB), the room-temperature spring-back of Ti-6Al-4V sheet can be reduced significantly. However, the existing analytical models for spring-back prediction do not take into account complex space-time deformation history, and thus cannot predict the spring-back behavior under IHB accurately. Although numerical simulation can achieve high accuracy of spring-back prediction, it cannot obtain the values and distributions of tangential strain/stress efficiently, and it is also unable to quantitatively distinguish the influence of space-time deformation history on the level of spring-back. In this paper, a theoretical model considering both the effects of the space-time deformation history and the strain rate is creatively established to predict the spring-back behaviors. In the proposed model, a novel shape equation is established to describe the space-time deformation history of sheet. When using the shape equation, only two parameters (kv and pv) need to be adjusted to accurately obtain the desired shape history of sheet. Specifically, both the effects of strain rate and cyclic loading can be considered in the proposed constitutive equation used for the analytical analysis. By utilizing the analytical model, the effect of space-time deformation history and strain rate on the spring-back reduction can be quantitatively characterized, and the result shows that the space-time deformation history is the primary factor affecting the spring-back reduction under high-strain-rate bending. The analytical model is further utilized to reveal the mechanism of spring-back reduction. According to the analytical results, cyclic loading occurred at the sidewall of sheet under IHB. Additionally, the plastic zone widens and the plastic level improves significantly under IHB compared to conventional punch bending (CPB). By observing the distributions of tangential stress at the end of deformation, it is found that in certain regions under IHB, the compressive stress in the outer layer is greater than that in the inner layer, which makes the sheet to bend towards its inner side after unloading, and thus promotes the reduction of spring-back.
关键词	Ti-6Al-4V alloy Impact hydroforming Spring -back High strain rate Analytical model
资助者	National Natural Science Foundation of China ; Sino-Belarus Inter-Governmental Science and Technology Cooperation project
DOI	10.1016/j.ijmecsci.2023.108646
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[CB02-01] ; Sino-Belarus Inter-Governmental Science and Technology Cooperation project ; [52111530293]
WOS研究方向	Engineering ; Mechanics
WOS类目	Engineering, Mechanical ; Mechanics
WOS记录号	WOS:001055459000001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179042
专题	中国科学院金属研究所
通讯作者	Zhang, Shi-Hong; Xu, Yong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Peking Univ, Sch Math Sci, Beijing 100871, Peoples R China 4.Natl Acad Sci Belarus, Phys Tech Inst, Minsk 220141, BELARUS
推荐引用方式 GB/T 7714	Li, Hao,Xie, Si-Rui,Zhang, Shi-Hong,et al. Spring-back behaviors of Ti-6Al-4V sheet under effect of strain rate[J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,2023,260:16.
APA	Li, Hao.,Xie, Si-Rui.,Zhang, Shi-Hong.,Chen, Shuai-Feng.,Song, Hong-Wu.,...&Khina, Boris B..(2023).Spring-back behaviors of Ti-6Al-4V sheet under effect of strain rate.INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,260,16.
MLA	Li, Hao,et al."Spring-back behaviors of Ti-6Al-4V sheet under effect of strain rate".INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 260(2023):16.