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A platform for research: civil engineering, architecture and urbanism
Modification of the Hypoplasticity Von Wolffersdorff Equation Using a Bounding Surface and State-Dependent Peak Dilatancy Criterion
The Hypoplasticity model can accurately simulate the mechanical behavior of sands under different load paths without distinction between elastic and plastic deformation. Contrary to classical models of soil elastoplasticity, Hypoplasticity is an incremental, non-linear, state-dependent, constitutive model with smooth and continuous response envelopes; stemming from the Rational Mechanics framework, Hypoplasticity does not need a prior plastic potential criterion or pre-defined hardening rules. Recent studies have shown a complex behavior of sands under undrained conditions. Several researchers point out new features in the undrained stress-strain behavior. These include peak strength, peak dilatancy, ultimate steady state, critical steady state, critical void ratio, and transformation phase. All of these studies demonstrate that the features are dependent upon state variables, such as density and confining pressure. This work examines the state-dependent behavior of sands by introducing a bounding Drucker-Praguer surface and a state-dependent peak dilatancy function to the Hypoplasticity model.
Modification of the Hypoplasticity Von Wolffersdorff Equation Using a Bounding Surface and State-Dependent Peak Dilatancy Criterion
The Hypoplasticity model can accurately simulate the mechanical behavior of sands under different load paths without distinction between elastic and plastic deformation. Contrary to classical models of soil elastoplasticity, Hypoplasticity is an incremental, non-linear, state-dependent, constitutive model with smooth and continuous response envelopes; stemming from the Rational Mechanics framework, Hypoplasticity does not need a prior plastic potential criterion or pre-defined hardening rules. Recent studies have shown a complex behavior of sands under undrained conditions. Several researchers point out new features in the undrained stress-strain behavior. These include peak strength, peak dilatancy, ultimate steady state, critical steady state, critical void ratio, and transformation phase. All of these studies demonstrate that the features are dependent upon state variables, such as density and confining pressure. This work examines the state-dependent behavior of sands by introducing a bounding Drucker-Praguer surface and a state-dependent peak dilatancy function to the Hypoplasticity model.
Modification of the Hypoplasticity Von Wolffersdorff Equation Using a Bounding Surface and State-Dependent Peak Dilatancy Criterion
Herrera, Camilo (author) / Lizcano, Arcesio (author)
GeoFlorida 2010 ; 2010 ; Orlando, Florida, United States
GeoFlorida 2010 ; 461-469
2010-02-15
Conference paper
Electronic Resource
English
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