QUAKE/W

Category  Dynamics (behaviour and earthquake) 
Publisher  GEOSLOPE International Ltd. 
Platform  Win2000, WinXP, Vista 
Status  Commercial 
Description  QUAKE/W is a geotechnical finite element software product for the dynamic analysis of earth structures subjected to earthquake shaking. Earthquake records can be imported; both horizontal and vertical earthquake acceleration versus time records can be used. The peak acceleration and time duration of the records can be scaled for sitespecific conditions. Boundary conditions can be a function of time, and porewater pressure can be defined by specifying a pore pressure ratio as a function of the cyclic number ratio. The user can select a group of nodes and produce an xy graph of any parameters versus space or time. All computed parameters can be contoured. It has two constitutive models: the linearelastic model and the equivalent linear model. Isoparametric quadrilateral and triangular finite elements are implemented and each may have various numbers of optional secondary nodes to provide higher order interpolation of nodal values within the element. New features in 2007 version: Multiple analyses of similar or different types can be done in a single project file. Different solutions can be compared in the same file. Staged analyses can be done for construction sequencing with moving boundary conditions. Define boundary conditions and material properties by geometry region, rather than on the finite element mesh. Unstructured quadrilateral mesh with finetuning options. Interface elements can be added on lines to model soilstructure interactions, liners and geofabrics, cutoff walls and wick drains. Define a results graph on a geometry object (line, point, or region) or on a cut line or plane. Plot multiple results graphs together to compare data. Make a movie of analysis results to show how results change over time. Custom user addin functions to define material property or boundary condition functions using internal solver data or external data held in Excel or any other .NET program. Examples with a detailed discussion on how to use and apply the relevant features and how to interpret the results. Faulttolerant licensing on a wide area network. Effective stress nonlinear model uses accumulated volumetric strain to compute the development of excess porepressures. Time stepping integration sequence can be related to the earthquake time history record. The shear modulus G can be defined by a generalized data point function dependent on the effective overburden stress. A collapse surface can be defined for loose soils together with steadystate strengths. Beam and bar elements make it possible to consider the effects of the structural stiffness on the ground response to earthquake shaking. 
Cost  US Dollars 4,495 
Data formats supported  None stated 
Supplier in Canada  GEOSLOPE International Ltd. 
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