Journal ArticleDOI
Nonlinear soil models for irregular cyclic loadings
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TLDR
In this article, a new hypothesis is presented in which this scale factor is made a function of the stress level at the last reversal point, which leads to shear-stress shearstrain relationships under irregular cyclic loading.Abstract:
Current analytical and mechanical models for shear-stress shear-strain relationships under cyclic loading are described. These models generally comply with Masing's suggestion that unloading and reloading curves have the same shape as the initial loading curve except that they are enlarged by a factor of two. A new hypothesis is presented in which this scale factor is made a function of the stress level at the last reversal point. This new hypothesis leads to shear-stress shear-strain relationships under irregular cyclic loading that appear to give better agreement with experimental data than the existing models.read more
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Ground motion evaluation procedures for performance-based design
Jonathan P. Stewart,Shyh Jeng Chiou,Jonathan D. Bray,Robert W. Graves,Paul Somerville,Norman A. Abrahamson +5 more
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Damping formulation for nonlinear 1D site response analyses
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Ground Motion Intensity Measures for Liquefaction Hazard Evaluation
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Journal ArticleDOI
Use of Exact Solutions of Wave Propagation Problems to Guide Implementation of Nonlinear Seismic Ground Response Analysis Procedures
Annie O. L. Kwok,Jonathan P. Stewart,Youssef M. A. Hashash,Neven Matasovic,Robert M. Pyke,Zhiliang Wang,Zhaohui Yang +6 more
TL;DR: In this article, exact linear frequency-domain solutions for body wave propagation through an elastic medium are used to establish guidelines for two issues that have long been a source of confusion for users of nonlinear codes.