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Chapter and Conference Paper
On Validation of a Two-Surface Plasticity Model for Soil Liquefaction Analysis
Constitutive modeling of granular materials such as sands, non-plastic silts, and gravels has been significantly advanced in the past three decades. Several new constitutive models have been proposed and calib...
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Chapter and Conference Paper
LEAP-2017 Simulation Exercise: Calibration of Constitutive Models and Simulation of the Element Tests
This paper presents a summary of the element test simulations (calibration simulations) submitted by 11 numerical simulation (prediction) teams that participated in the LEAP-2017 prediction exercise. A signifi...
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Chapter and Conference Paper
Numerical Sensitivity Study Compared to Trend of Experiments for LEAP-UCD-2017
This paper describes the numerical sensitivity study requested prior to the December 2017 LEAP workshop. Several but not all of the simulation teams participated in this sensitivity study. The results of the s...
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Chapter and Conference Paper
LEAP-2017 Simulation Exercise: Overview of Guidelines for the Element Test Simulations
This paper summarizes the guidelines provided to the numerical simulation/prediction teams that participated in the LEAP-2017 prediction exercise. These guidelines are developed for the Phase 1 of the simulati...
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Chapter and Conference Paper
Difference and Sensitivity Analyses of the LEAP-2017 Experiments
The experimental results of LEAP (Liquefaction Experiments and Analysis Projects) centrifuge test replicas of a saturated slo** deposit are used to assess the sensitivity of soil accelerations to variability...
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Chapter and Conference Paper
LEAP-UCD-2017 Comparison of Centrifuge Test Results
This paper compares experimental results from every facility for LEAP-UCD-2017. The specified experiment consisted of a submerged medium-dense clean sand with a 5-degree slope subjected to 1 Hz ramped sine wav...
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Chapter and Conference Paper
LEAP-2017: Comparison of the Type-B Numerical Simulations with Centrifuge Test Results
This paper presents comparisons of 11 sets of Type-B numerical simulations with the results of a selected set of centrifuge tests conducted in the LEAP-2017 project. Time histories of accelerations, excess por...
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Chapter and Conference Paper
LEAP-UCD-2017 V. 1.01 Model Specifications
This paper describes the specifications developed by and distributed to all of the centrifuge test facilities involved in LEAP-UCD-2017. The specified experiment consisted of a submerged medium dense clean san...
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Chapter and Conference Paper
Physical and Mechanical Properties of Ottawa F65 Sand
This paper presents the results of soil characterization and element tests of Ottawa F65 sand. The data presented is intended to be used as calibration material for the prediction exercise conducted as part of...
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Article
High-resolution flying-PIV with optical fiber laser delivery
Implementation of non-intrusive optical measurement techniques, such as particle image velocimetry (PIV), in harsh environments requires specialized techniques for introducing controlled laser sheets to the re...
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Chapter and Conference Paper
On Simulation of Strain Localization Using Microplasicity Constitutive Models
The common perception that a regularization method such as strain gradient or micropolar enhancement must be able to produce mesh objective solutions is evaluated within the framework of micropolar plasticity ...
