Global ETD Search
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Showing 1 to 6 of 6 for “"Non-Associated Flow Rule"”.
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Hybrid experimental-numerical determination of the loading path to fracture in TRIP780 sheets subjected to multi-axial loading
… fields within the specimen gage section become non-uniform and of three dimensional nature. Consequently, the stress history prior to fracture can no longer be estimated based on the force history measurements using simple analytical formulas. A detailed finite element analysis of each …
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Cyclic behavior of cohesionless granular media using the compact state concept
… model: an elasto-plastic material with a non-associated flow rule along with the concept of bounding surface plasticity possessing ultimate state and compact state. The model is capable of realistically simulating stress-strain behavior of sands under monotonic and cyclic, drained and …
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Numerical modeling of strain localization in granular materials using Cosserat theory enhanced with microfabric properties
… to investigate the strain localization phenomenon "shear bands" in granular materials. The micro-polar theory was used as the mathematical foundation for the continuum formulations. A laboratory testing results are used for verification and comparison with the numerical simulation. Silica sand …
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Experimental investigation and constitutive modeling of marine clay
… a failure function, plastic potential function (non-associated flow rule), yield function and hardening law. To describe the degree of cross-anisotropy at failure, a new four-parameter failure criterion is developed. The plastic potential function, having two parameters, determines the directions …
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Constitutive equations for granular materials : application to dry sand and powder metal
… model is formulated for describing the plastic flow of cohesionless granular materials. This constitutive model has been implemented in the finite element package ABAQUS/explicit(1999) and is used to predict the strain localization in geomaterials. The numerical calculations are shown to be in …