IMECH-IR  > 非线性力学国家重点实验室
CONSTRAINT ASSESSMENT FOR CRUCIFORM SPECIMENS WITH A SEMI ELLIPTICAL CRACK
Cao YP.; Qian GA(钱桂安); He YB.; Chao YJ.
Source PublicationPROCEEDINGS OF THE ASME PRESSURE VESSELS AND PIPING CONFERENCE, 2018, VOL 6A
2019
PagesUNSP V06AT06A034
Conference NameASME Pressure Vessels and Piping Conference (PVP 2018)
Conference DateJUL 15-20, 2018
Conference PlacePrague, CZECH REPUBLIC
AbstractA real crack to be assessed in a RPV is generally a shallow crack subjected to biaxial far-field stresses. However, the fracture toughness Ke or Je, which is an important material property for the structural integrity assessment of RPV containing cracks, are usually tested on deep cracked compact tension [C(T)] or single-edged bending [SE(B)] specimens under uniaxial loading. The fracture toughness data do not reflect the realistic biaxial loading state that the cracks are subjected to. Cruciform bending [CR(B)] specimen is therefore developed to simulate the biaxial stress state. In this paper, a series of finite element (FE) simulations of the CR(B) specimens containing different semi-elliptical cracks are conducted, Stress-strain curves of materials of different yield strength and hardening behavior reflecting the variation in the mechanical properties of RPV steels due to aging or temperature change are implemented into the finite element models. The J-A2 theory is applied to analyze the crack tip constraint. The results show that the biaxial effect is material property dependent and affected by load levels.
WOS IDWOS:000460998900034
Funding OrganizationHTGR Nuclear Power Plant of China [2014ZX06002001]
ISBN978-0-7918-5167-8
Indexed ByCPCI-S ; EI
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78552
Collection非线性力学国家重点实验室
Affiliation1.{Cao, Yupeng、He, Yinbiao} Shanghai Nucl Engn Res & Design Inst, Dept Component Res & Design, Shanghai 200237, Peoples R China
2.{Qian, Guian} Chinese Acad Sci, State Key Lab Nonlinear Mech LNM, Inst Mech, Beijing 100190, Peoples R China
3.{Chao, Yuh J.} Univ South Carolina, Dept Mech Engn, Columbia, SC 29208 USA
Recommended Citation
GB/T 7714
Cao YP.,Qian GA,He YB.,et al. CONSTRAINT ASSESSMENT FOR CRUCIFORM SPECIMENS WITH A SEMI ELLIPTICAL CRACK[C],2019:UNSP V06AT06A034.
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