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作者:Mohamed Ben Bettaieb , Farid Abed-Meraim
来源:[J].The International Journal of Advanced Manufacturing Technology(IF 1.205), 2017, Vol.92 (9-12), pp.3461-3480
摘要:... Consequently, the prediction of necking, and the associated limit strains, for such components is of major academic and industrial importance. The current contribution aims to numerically investigate the respective and combined effects of strain rate sensitivity of the meta...
作者:K.E. N'souglo , J.A. Rodríguez-Martínez , O. Cazacu
来源:[J].International Journal of Plasticity(IF 4.356), 2020, Vol.128
摘要:Abstract(#br)This paper brings to light the effect of tension-compression asymmetry in flow stresses on the formation of dynamic necking instabilities in isotropic metallic plates subjected to plane strain stretching. For that purpose, a two-pronged approach which includes finite...
作者:Junying Min , Thomas B. Stoughton , John E. Carsley ...
来源:[J].International Journal of Mechanical Sciences(IF 1.613), 2017, Vol.123, pp.238-252
摘要:Abstract(#br)A method using surface curvatures to detect the onset of localized necking in forming limit tests [Min J, Stoughton TB, Carsley JE, Lin J. A Method of Detecting the Onset of Localized Necking Based on Surface Geometry Measurements. Exp Mech 2016; DOI:10.1007/s11340-...
作者:Jianchang Zhu , Mohamed Ben Bettaieb , Farid Abed-Meraim
来源:[J].International Journal of Mechanical Sciences(IF 1.613), 2020, Vol.166
摘要:... This paper aims to contribute to this effort by developing reliable numerical tools capable of predicting the occurrence of necking in perforated sheets. These tools are based on the coupling between the periodic homogenization technique and three plastic instability criteria...
作者:A. Needleman
来源:[J].Mechanics of Materials(IF 1.936), 2018, Vol.116, pp.180-188
摘要:... The focus is on the effect of bar size on whether the notch triggers necking or necking initiates away from the notch. The governing equations are presented in non-dimensional form and two key non-dimensional groups that involve both material and loading parameters are identi...
作者:A. Vaz-Romero , J.A. Rodríguez-Martínez , S. Mercier ...
来源:[J].International Journal of Solids and Structures(IF 1.871), 2017, Vol.125, pp.232-243
摘要:... The goal is to elucidate the role played by a spatial-localized defect of the strain rate field in the necking pattern that emerges in the bars at large strains. For that task, we have used two different approaches: (1) finite element simulations and (2) linear stability ana...
作者:J. Yon , A. Bescond , F. Liu
来源:[J].Journal of Quantitative Spectroscopy and Radiative Transfer(IF 2.38), 2015, Vol.162, pp.197-206
摘要:... This study conducted a systematic investigation of the effects of overlapping and necking between neighbouring primary particles on the radiative properties of soot aggregates using the discrete dipole approximation. The degrees of overlapping and necking are quantified by t...
作者:Linjie Huang , Feng Qi , Lianxu Yu ...
来源:[J].Materials Science & Engineering A(IF 2.108), 2015, Vol.634, pp.71-76
摘要:Abstract(#br)Necking, one of the most special characteristics for IN718 alloy during the superplastic deformation with respect to other conventional superplastic alloys, dominates the failure of the alloy in the high strain rate superplastic deformation (10 −2 –10 −1 s...
作者:Ali Zahedi , Bijan Mollaei Dariani , Mohammad Javad Mirnia
来源:[J].International Journal of Mechanical Sciences(IF 1.613), 2019, Vol.153-154, pp.341-358
摘要:... By measuring the strain pairs of the fractured specimens, the necking forming limit curve (NFLC) and the fracture forming limit curve (FFLC) of the two-layer sheet are experimentally achieved. In order to numerically predict limiting strains at the necking and fracture i...
作者:Monir Takla
来源:[J].International Journal of Mechanical Sciences(IF 1.613), 2018
摘要:Abstract(#br)Bifurcation behavior of cylindrical pressure vessels simultaneously loaded by internal pressure and axial tension is investigated theoretically and numerically with emphasis on the transition between diffuse bulging and necking modes of bifurcation. It is illustrated...

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