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RISReliability Based Design Optimization Modeling Future Redesign With Different Epistemic Uncertainty Treatments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Design under uncertainty needs to account for aleatory uncertainty, such as variability in material properties, and epistemic uncertainty including errors due to imperfect analysis tools. While there is a consensus that ...
Teaching a Verification and Validation Course Using Simulations and Experiments With Paper Helicopters
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In teaching a course on verification and validation (V&V) in scientific simulations, it is desirable for students to carry out repeated experiments on devices/systems that they can build and that can be easily repeated. ...
General-Surrogate Adaptive Sampling Using Interquartile Range for Design Space Exploration
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A surrogate model is a common tool to approximate system response at untested points for design space exploration. Adaptive sampling has been studied for improving the accuracy of surrogates iteratively by introducing ...
Function Prediction at One Inaccessible Point Using Converging Lines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The focus of this paper is a strategy for making a prediction at a point where a function cannot be evaluated. The key idea is to take advantage of the fact that prediction is needed at one point and not in the entire ...
Epistemic Uncertainty Stemming From Measurement Processing—A Case Study of Multiphase Shock Tube Experiments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Experiments of a shock hitting a curtain of particles were conducted at the multiphase shock tube facility at Sandia National Laboratories. These are studied in this paper for quantifying the epistemic uncertainty in the ...
On the Use of Symmetries in Building Surrogate Models
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: When simulations are expensive and multiple realizations are necessary, as is the case in uncertainty propagation, statistical inference, and optimization, surrogate models can achieve accurate predictions at low computational ...
Epistemic Uncertainty Stemming From Measurement Processing—A Case Study of Multiphase Shock Tube Experiments
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Experiments of a shock hitting a curtain of particles were conducted at the multiphase shock tube facility at Sandia National Laboratories. These are studied in this paper for quantifying the epistemic uncertainty in the ...
Deciding Degree of Conservativeness in Initial Design Considering Risk of Future Redesign
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Early in the design process, there is often mixed epistemic model uncertainty and aleatory parameter uncertainty. Later in the design process, the results of high-fidelity simulations or experiments will reduce epistemic ...
A Kriging Surrogate Model for Computing Gas Mixture Equations of State
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Accurate simulation of the complex flow following the detonation of an explosive material is a challenging problem. In these flows, the detonation products of the explosive must be treated as a real gas while the surrounding ...
Early Time Evolution of Circumferential Perturbation of Initial Particle Volume Fraction in Explosive Cylindrical Multiphase Dispersion
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: When an annular bed of solid particles that surrounds a cylindrical high-energy explosive core gets radially dispersed after detonation, the expanding front of particles undergoes instabilities. One of the possible causes ...