Results 91 to 100 of about 7,360 (301)

A Fracture Criterion for Prediction of Fracture Initiation of Metal Materials at Various Stress States for Nuclear Waste Storage

Science and Technology of Nuclear Installations, 2019
A fracture criterion is newly proposed to evaluate fracture behavior and predict fracture initiation of metal materials in different complicated stress states for four different fracture mechanisms including quasicleavage fracture, normal fracture with ...
Zhihui Li, Xue Yang, Anmin Tang
doaj   +1 more source

Generalized Matsuoka–Nakai criterion considering hydrostatic pressure dependence in the brittle–ductile region

Deep Underground Science and Engineering, EarlyView.
Three sets of strength data were selected, including hydrostatic pressure independent within the brittle region (HPI‐B), hydrostatic pressure dependent within the brittle region (HPD‐B), and hydrostatic pressure dependent within the brittle–ductile region (HPD‐BD). For HPI type, the failure envelope within the deviatoric plane remains constant.
Jiacun Liu, Junjie Xiao, Dongping Liu, Ying Xu   +3 more
wiley   +1 more source

Permeability of granite from a shallow buried mountain pipe gallery tunnel under unloading confining pressure

Deep Underground Science and Engineering, EarlyView.
Triaxial compression tests under unloading confining pressure conditions were conducted to systematically analyze the permeability behavior of granite retrieved from the different classification surrounding rocks. Abstract The rock mass within mountain tunnels undergoes complex changes in permeability, strength, and deformation during tunneling ...
Xiaoyan Zhang, Yonghua Ye, Jianping Zuo, Baojiang Han, Weigang Jiao   +4 more
wiley   +1 more source

Analysis of damage and fracture mechanisms in ductile metals under non-proportional loading paths [PDF]

, 2019
The paper discusses biaxial experiments and corresponding numerical simulations to analyze the effect of non-proportional loading paths on damage and fracture behavior of ductile metals.
Brünig, Michael, Gerke, Stephen, Zistl, Moritz   +2 more
core  

Effect of stress-triaxiality on void growth in dynamic fracture of metals: a molecular dynamics study [PDF]

, 2004
The effect of stress-triaxiality on growth of a void in a three dimensional single-crystal face-centered-cubic (FCC) lattice has been studied. Molecular dynamics (MD) simulations using an embedded-atom (EAM) potential for copper have been performed at ...
A. Needleman, A. Needleman, A. Needleman, A.C.F. Cocks, A.L. Gurson, A.L. Stevens, D.F. Quinn, D.J. Eaglesham, D.J. Oh, D.R. Curran, E. T. Seppälä, E. van der Giessen, F.A. McClintock, F.F. Abraham, H. Andersson, J. Belak, J. Belak, J. Belak, J.D. Eshelby, J.R. Rice, J.Y. Shu, L. Farrisey, M. Gologanu, M. Gologanu, M. Parrinello, M.R. Gungor, P. Ponte Castañeda, P.J. Steinhardt, R. Cortes, R. E. Rudd, R.E. Rudd, R.J. Green, S. Shima, S.W. Sloan, T.W. Barbee, Jr., V. Tvergaard, V. Tvergaard, V. Tvergaard, V. Tvergaard, V. Tvergaard, W.G. Hoover, X.Y. Wu, X.Y. Wu, Y. Huang   +43 more
core   +1 more source

Stress Triaxiality in Anisotropic Metal Sheets-Definition and Experimental Acquisition for Numerical Damage Prediction. [PDF]

Materials (Basel), 2022
Rickhey F, Hong S.
europepmc   +1 more source

Critical expansion points: Mechanical signs of surrounding rock instability

Deep Underground Science and Engineering, EarlyView.
This study proposes the Rock Bearing‐Expansion Model (RockBEM) with critical expansion points (CEPs) to quantify post‐peak damage stages in deep‐buried rock masses via plane strain compression test (PSCT). CEP hysteresis&interval ratios reveal bearing performance dynamics and failure severity, advancing mechanistic insights into deep underground rock ...
Jiaqi Wen, Chang Deng, Haijun Wang, Lei Tang, Jihong Yu   +4 more
wiley   +1 more source

STUDY ON NECKING AND FRACTURE OF DUCTILE MATERIALS BASED ON STRESS TRIAXIALITY

Jixie qiangdu, 2015
Stress triaxiality is a key factor in controlling the fracture of materials. Based on new method of finite element aided testing（ FAT）,the full-range constitutive relationship of ductile materials could be obtained. Thus,the distribution and evolution of
QI Shuang, CAI LiXun, BAO Chen, YAO Di
doaj  

The influence of Massive Black Hole Binaries on the Morphology of Merger Remnants [PDF]

, 2018
Massive black hole (MBH) binaries, formed as a result of galaxy mergers, are expected to harden by dynamical friction and three-body stellar scatterings, until emission of gravitational waves (GWs) leads to their final coalescence.
Bortolas, Elisa, Dotti, Massimo, Gualandris, Alessia, Read, Justin I.   +3 more
core   +3 more sources

Cortical bone continuum damage mechanics constitutive model with stress triaxiality criterion to predict fracture initiation and pattern. [PDF]

Front Bioeng Biotechnol, 2022
Cronin DS, Watson B, Khor F, Gierczycka D, Malcolm S.   +4 more
europepmc   +1 more source