Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Howard L. Schreyer"'
Autor:
Howard L. Schreyer, D. J. Burnett
Publikováno v:
International Journal for Numerical Methods in Engineering. 117:574-603
Publikováno v:
International Journal of Rock Mechanics and Mining Sciences. 145:104751
Experimental data for porous media exhibit nonlinear pressure-volumetric strain relations and a strong dependence on the Terzaghi pressure defined as confining pressure minus pore pressure . However, a clear explanation of why this pressure plays suc
Autor:
Deborah Sulsky, Howard L. Schreyer
Publikováno v:
International Journal for Numerical and Analytical Methods in Geomechanics. 40:1253-1283
Publikováno v:
International Journal for Numerical Methods in Engineering. 103:60-78
Summary The material-point method models continua by following a set of unconnected material points throughout the deformation of a body. This set of points provides a Lagrangian description of the material and geometry. Information from the material
Publikováno v:
International Journal for Numerical and Analytical Methods in Geomechanics. 39:988-1013
Summary Thermodynamic growth or melt and mechanical redistribution due to lead opening or ridge formation shape the thickness distribution of the Arctic ice cover and impact the overall strength of pack ice. Specifically, the deformation and strength
Publikováno v:
International Journal for Numerical and Analytical Methods in Geomechanics. 39:23-50
SUMMARY Damage in the form of cracks is predicted to assess the susceptibility of a tunnel to failure due to a blast. The material-point method is used in conjunction with a decohesive failure model as the basis for the numerical simulations. The ass
Publikováno v:
Cold Regions Science and Technology. :44-51
In a previous paper, an elastic-decohesive model was developed for sea ice. Unlike previous models, orientation and displacement discontinuity associated with lead opening are specifically predicted. However, over the course of a season a specific le
Autor:
Howard L. Schreyer
Publikováno v:
International Journal for Numerical and Analytical Methods in Geomechanics. 31:147-171
In the numerical simulation of failure for structures, crack initiation is normally based on a criterion that provides both the stress and the orientation of the material failure plane. Most constitutive models provide reasonably good criteria for st
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 191:2483-2507
Decohesion is an important failure mode associated with layered composite materials. Here, the energy implications of material softening are explored in a thermodynamic framework with the result that the dissipated energy (fracture energy) is greater
Publikováno v:
International Journal of Mechanical Sciences. 42:2167-2189
The deformation characteristics of ductile polycrystalline materials at elevated temperatures were studied numerically by considering a square segment of material subjected to different stress modes. The initial polycrystalline microstructure was gen