Results 21 to 30 of about 111,262 (295)
Medžiagotyra, 2022 This paper deals with the effect of initial crack tip shape, plastic compressibility, and strain softening on near-tip stress-strain fields for a mode I crack subjected to fatigue loading under plane strain and small scale yielding. A finite strain-based
Md Intaf ALAM +3 more
doaj +1 more source
Advances in Civil Engineering, 2023 Tunnel opening or excavation in the strain-softening rock masses primarily leads to initial stress release and rock deformation. The increasing plastic shear strain induces a nonlinear variation of dilatancy in rock masses. Therefore, tunnel stability is
Xiuling Wang
doaj +1 more source
Advances in Materials Science and Engineering, 2021 The nonisothermal multipass deformation behavior of as-cast 42CrMo alloy was studied with declining temperature, constant pass strain, varying strain rate, and interval time. The stresses are used to develop the constitutive model.
Fangcheng Qin +4 more
doaj +1 more source
A Strain Hardening and Softening Constitutive Model for Hard Brittle Rocks
Applied Sciences, 2023 To study the strain hardening and softening mechanism for hard brittle rocks, a strain hardening and softening constitutive model for hard brittle rocks is developed.
Junchi Chen, Weihua Wang, Longfeng Chen
doaj +1 more source
The constitutive relations and thermal deformation mechanism of nickel aluminum bronze
Materials & Design, 2022 A Gleeble3500 thermal simulator investigated the flow behavior of cast nickel aluminum bronze(NAB) with quasi-static test and a split Hopkinson pressure bar (SHBP) with strain rates of 2000–16000 s−1 and a temperature range of 298–1073 K.
Siqi Zeng +4 more
doaj +1 more source
Study of Flow Softening Mechanisms of a Nickel-Based Superalloy With Δ Phase
Archives of Metallurgy and Materials, 2016 The flow softening behaviors of a nickel-based superalloy with δ phase are investigated by hot compression tests over wide ranges of deformation temperature and strain rate. Electron backscattered diffraction (EBSD), optical microscopy (OM), and scanning
Lin Y.C. +5 more
doaj +1 more source
Journal of Materials Research and Technology, 2021 The application of appropriate constitutive equation describing the relationship between the flow stress, temperature and strain rate is essential to get deep insight into the process mechanism of friction stir welding (FSW).
Chunliang Yang, ChuanSong Wu, Song Gao
doaj +1 more source
Large-Strain Softening of Metals at Elevated Temperatures by Deformation Texture Development
Metals, 2021 Many (if not a majority) of metals and alloys evince substantial softening with torsion deformation to strains not usually achievable in tension. Of course, softening has long been observed by discontinuous dynamic recrystallization (DDRX) but this paper
Michael E. Kassner, Roya Ermagan
doaj +1 more source
COMPRESSION INSTABILITIES OF TISSUES WITH LOCALIZED STRAIN SOFTENING [PDF]
International Journal of Applied Mechanics, 2011 The stress–strain relationship of biological soft tissues affected by Marfan's syndrome is believed to be nonconvex. More specifically, Haughton and Merodio recently proposed a strain energy density leading to localized strain-softening, in order to model the unusual mechanical behavior of these isotropic, incompressible tissues.
DESTRADE, MICHEL, MERODIO, JOSE
openaire +2 more sources
Advances in Civil Engineering, 2019 According to the strain-softening characteristics of rock mass, an ideal elastic strain-softening model is developed, and the surrounding rock of tunnels is subdivided into the plastic broken zone, plastic strain-softening zone, and elastic zone.
Qifeng Guo +4 more
doaj +1 more source