Session M8a
BIFURCATION AND INSTABILITY OF GEOLOGICAL AND GRANULAR MATERIALS
Tuesday 1:00 - 2:20, ECCR 200
Session Chair: Kathleen Issen
1:00 F. Darve, H.D.V. Khoa, and F. Laouafat, “Bifurcation criteria for geomaterials: Theoretical and numerical analysis”
1:20 I.-O. Georgopoulos and I. Vardoulakis, “Expanded perlite as a model material to study the role of grain stiffness and strength in granular media”
1:40 M.S. Gutierrez, “Parametric sensitivity of strain localization in granular materials”
2:00 O.A. Hattamleh and B. Muhunthan, “Fabric of granular media and strain localization in granular materials”
Session M8b
BIFURCATION AND INSTABILITY OF GEOLOGICAL AND GRANULAR MATERIALS
Tuesday 3:20 - 4:40, ECCR 200
Session Chair: Jianfeng Wang
3:20 D. Peric and H.A. Rasheed,“Discontinuous bifurcations of elastic-plastic fiber reinforced composites in plane strain”
3:40 X. Wang and L.B. Wang, “A contact band element and its application to interfaces and joints subject to large shear deformations”
4:00 B. Weingartner, V.A. Osinov, and W. Wu, “Effect of inherent anisotropy on flutter instability in hypoelasticity”
4:20 J. Wang, M.S. Gutierrez, and J.E. Dove, “Study of strain localization in an interphase system subject to quasi-static shear”
Session M8c
BIFURCATION AND INSTABILITY OF GEOLOGICAL AND GRANULAR MATERIALS
Wednesday 8:00 - 10:00, ECCR 200
Session Chair: Kathleen Issen
8:00 J.W. Rudnicki, “Formation and extension of compaction bands in porous rock”
8:40 R. Borja and A. Aydin, “Conditions for pore collapse instabilities in high-porosity rocks undergoing compaction banding and cataclastic flow”
9:00 S. Tembe, V. Vajdova, T.-F. Wong, and W. Zhu, “Strain localization in circumferentially notched samples of two porous sandstones”
9:20 B. Haimson and H.K. Lee, “Laboratory-induced compaction bands in quartz-rich porous sandstones”
9:40 D.J. Holcomb, G.L. Gettemy, and W.A. Olsson, “Investigation of the compaction localization process in porous sandstone using acoustic emission locations and focal mechanisms”
Session M8d
BIFURCATION AND INSTABILITY OF GEOLOGICAL AND GRANULAR MATERIALS
Wednesday 10:20 - 12:00, ECCR 200
Session Chair: Jianfeng Wang
10:20 V. Challa and K.A. Issen, “Influence of third invariant of deviatoric stress on localization conditions for high porosity sandstone”
10:40 R.A. Schultz, “Adventures beyond the individual deformation band”
11:00 R.P. Chambon and F.H. Collin, “Finite element computations of hydro mechanical coupled localized problems using a local second gradient model”
11:20 A. Tordesillas and J.F. Peters, “Mathematical analysis of the micromechanics of shear bands”
11:40 S.D.C. Walsh, A. Tordesillas, and J.F. Peters, “Implications of shear band micromechanics on the mathematical structure of constitutive relationships”