Compressive creep behavior of spherical pressure hull scale model for full-ocean-depth manned submersible

doi:10.1016/j.oceaneng.2022.112831

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

	Compressive creep behavior of spherical pressure hull scale model for full-ocean-depth manned submersible
	Wang, Lei 1,2,3; Li, Yanqing 1,2,3; Sun, Chengqi 4,5; Qiu, Jianke 6; Huang, Jinhao 1,2,3; Jiang, Xuyin 1,2,3; Sun, Zhijie 7; Wan, Zhengquan 1,2,3
刊名	OCEAN ENGINEERING
	2022-12-15
卷号	266 页码:11
关键词	Full -ocean -depth manned submersible Titanium alloy Pressure hull Compressive creep behavior Creep constitutive equation
ISSN号	0029-8018
DOI	10.1016/j.oceaneng.2022.112831
通讯作者	Wang, Lei(wanglei@cssrc.com.cn)
英文摘要	The phenomenon of room temperature creep in titanium alloys has drawn great attention for decades. With the increasing application of titanium alloys to the manned submersible pressure hull, the traditional calculation and analysis based on strength and stability cannot meet the requirement of structure design and safety evaluation for the spherical pressure hull completely. In this paper, a series of compressive creep tests were performed to reveal the change rule and distribution characteristics for creep behavior of the spherical pressure hull model. Results show that there is no measurable creep strain for pressure hull under maximum operating pressure and steadystate creep appeared in high stress areas of the pressure hull under 1.25 times maximum operating pressure, with the characteristics of internal creep strain and strain rate being greater than the external counterparts. The stress threshold value of the pressure hull model for steady-state creep is 853.7 MPa (equivalent to 0.88Rp0.2), and a creep constitutive equation is proposed based on improved Norton power law model. The results of this paper can provide support for the safety assessment and optimization design of manned submersibles for long-term service.
资助项目	National Key Research and Development Program of China ; [2017YFC0305500] ; [2021YFC2802300]
WOS关键词	ROOM-TEMPERATURE CREEP ; DWELL-FATIGUE PROPERTY ; TITANIUM-ALLOYS ; TI-6AL-4V ; STRESS ; METALS ; DAMAGE ; TI
WOS研究方向	Engineering ; Oceanography
语种	英语
WOS记录号	WOS:000877464200002
资助机构	National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/90636]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Wang, Lei
作者单位	1.China Ship Sci Res Ctr, Wuxi 214082, Peoples R China 2.State Key Lab Deep Sea Manned Vehicles, Wuxi 214082, Peoples R China 3.Taihu Lab Deepsea Technol Sci, Wuxi 214082, Peoples R China 4.Inst Mech, Chinese Acad Sci, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 5.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 6.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 7.Luoyang Ship Mat Res Inst, Luoyang 471023, Peoples R China
推荐引用方式 GB/T 7714	Wang, Lei,Li, Yanqing,Sun, Chengqi,et al. Compressive creep behavior of spherical pressure hull scale model for full-ocean-depth manned submersible[J]. OCEAN ENGINEERING,2022,266:11.
APA	Wang, Lei.,Li, Yanqing.,Sun, Chengqi.,Qiu, Jianke.,Huang, Jinhao.,...&Wan, Zhengquan.(2022).Compressive creep behavior of spherical pressure hull scale model for full-ocean-depth manned submersible.OCEAN ENGINEERING,266,11.
MLA	Wang, Lei,et al."Compressive creep behavior of spherical pressure hull scale model for full-ocean-depth manned submersible".OCEAN ENGINEERING 266(2022):11.