Your Title Goes Here, All Words With Three or More Letters Capitalized First M. Author, First Affiliation, first.email@university.edu Second M. Author, Second Affiliation, second.email@university.edu (Insert your affiliation logo here) Abstract (3) Third Section Body text is Times New Roman, 18 pt. Note that the section blocks here are only provided as a guide. Feel free to rearrange given your own sizing and story-line considerations. Third section text and images go here. (1) First Section GOVERNING EQUATIONS We consider a two-phase mixture, consisting of a solid matrix and saturating fluid. We employ a mixed formulation, in which we simultaneously solve for the solid displacements (u) and excess pore pressures (p). We assume the system is isothermal, and that both the solid and fluid constituents are intrinsically incompressible. In this setting, the governing equations for the system are given by the equilibrium and continuity equations, (4) Fourth Section Fourth section text and images. CONSTITUTIVE BEHAVIOR We assume that the constitutive response of the fluid is governed by Darcy’s law. To determine the effective stress-strain behavior, we employ a Modified Cam-Clay plasticity model. In P-Q stress space, the yield function is given by The Cam-Clay model can capture plastic compaction and dilation phenomena commonly observed in geomaterials (see Figure 1). A complete description of the model and its numerical implementation can be found in [2] and companion papers. Figure 1: Comparison of the current constitutive model with fixed-ring oedometer tests by Saffer et al. [3] on sediments extracted near the deformation front of the Costa Rica subduction zone. (2) Second Section Second section text and images. (5) Conclusions and Future Work Insert conclusions and thoughts about future work here. You may also want to include any relevant citations. [1] J.A. White and R.I. Borja (2008). “Stabilized low-order finite elements for coupled solid-deformation/fluid-diffusion and their application to fault-zone transients.” Comput. Methods Appl. Mech. Eng. 197, 4353-4366. [2] R.I. Borja and C. Tamagnini (1998). “Cam-Clay plasticity part III: Extension of the infinitesimal model to include finite strains.” Comput. Methods Appl. Mech. Eng. 155, 73-95. [3] A.W. McKiernan and D.M. Saffer (2006). “Data report: Permeability and consolidation properties of sediments off Costa Rica, ODP leg 205.” Proc. Ocean Drilling Project, Sci. Results 205, 1-24. International Workshop on Multiscale & Multiphysics Processes in Geomechanics Stanford University, June 23-25, 2010