Evaluation of a Simple UQ Approach to Compensate for Sparse Stress-Strain Curve Data in Solid Mechanics Applications
Abstract not provided.
Publications
Workflow Scenarios for Large-Scale System Models - V&V Perspective
Abstract not provided.
Engineering Sciences Workflow in the Sandia Analysis Workbench (SAW)
Abstract not provided.
Can-Crush Model and Simulations for Verifying Uncertainty Quantification Method for Sparse Stress-Strain Curve Data
Abstract not provided.
Assessment of a UQ Approach for Handling Sparse Samples of Discrete Random Functions (Material Stress-Strain Curves)
Abstract not provided.
The 2014 Sandia Verification and Validation Challenge: Problem statement
Journal of Verification, Validation and Uncertainty Quantification
This paper presents a case study in utilizing information from experiments, models, and verification and validation (V&V) to support a decision. It consists of a simple system with data and models provided, plus a safety requirement to assess. The goal is to pose a problem that is flexible enough to allow challengers to demonstrate a variety of approaches, but constrained enough to focus attention on a theme. This was accomplished by providing a good deal of background information in addition to the data, models, and code, but directing the participants' activities with specific deliverables. In this challenge, the theme is how to gather and present evidence about the quality of model predictions, in order to support a decision. This case study formed the basis of the 2014 Sandia V&V Challenge Workshop and this resulting special edition of the ASME Journal of Verification, Validation, and Uncertainty Quantification.
Incorporating V&V/UQ Workflow in the Sandia Analysis Workbench
Abstract not provided.
Verification Validation and Uncertainty Quantification of a Thermal-Mechanical Pressurization and Breach Application
Abstract not provided.
Sensitivity Analysis (SA) and Uncertainty Quantification (UQ) Tools in Sandia Analysis Workbench (SAW)
Abstract not provided.
Advanced UQ and V&V Procedures applied to Thermal-Mechanical Response and Weld Failure in Heated Pressurizing Canisters
Abstract not provided.
Calibration and Evaluation of the Johnson-Cook Strength and Failure Models for Puncture Simulations of Aluminum Plates
Abstract not provided.
Puncture of Aluminum 7075 Plates: Experiments Numerical Simulations and Model Verification
Abstract not provided.
An evaluation of the Johnson-Cook model to simulate puncture of 7075 aluminum plates
The objective of this project was to evaluate the use of the Johnson-Cook strength and failure models in an adiabatic finite element model to simulate the puncture of 7075- T651 aluminum plates that were studied as part of an ASC L2 milestone by Corona et al (2012). The Johnson-Cook model parameters were determined from material test data. The results show a marked improvement, in particular in the calculated threshold velocity between no puncture and puncture, over those obtained in 2012. The threshold velocity calculated using a baseline model is just 4% higher than the mean value determined from experiment, in contrast to 60% in the 2012 predictions. Sensitivity studies showed that the threshold velocity predictions were improved by calibrating the relations between the equivalent plastic strain at failure and stress triaxiality, strain rate and temperature, as well as by the inclusion of adiabatic heating.
Proposal for the 2014 Verification and Validation Challenge Workshop
Abstract not provided.
Proposal for FY14 V&V Challenge Workshop
Abstract not provided.
Proposal for FY14 V&V Challenge Workshop
Abstract not provided.
The Role of UQ and Optimization in Simulation Based Engineering Design
Abstract not provided.
Results 26–42 of 42