Quantification of Margins and Uncertainties for Aerospace Systems using Stochastic Expansions (2015)

Authors Thomas West IV, Serhat Hosder, Tyler Winter Introduction The objective of this study was to demonstrate the use of stochastic expansions in the quantifi cation of margins and uncertainties in…

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A Mixed Uncertainty Quantification Approach Using Evidence Theory and Stochastic Expansions (2015)

Authors Harsheel Shah, Serhat Hosder, and Tyler Winter Introduction Uncertainty quantification (UQ) is the process of quantitative characterization and propagation of input uncertainties to the response measure of interest in…

Continue ReadingA Mixed Uncertainty Quantification Approach Using Evidence Theory and Stochastic Expansions (2015)

Development of an Efficient Uncertainty Quantification Framework Applied to an Integrated Spacecraft System (2011)

Authors Tyler Winter, Benjamin Bettis, Serhat Hosder Introduction The objective of the study described in this paper was to develop an efficient uncertainty quantification framework capable of analyzing uncertainty in…

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Efficient Uncertainty Quantification in Multidisciplinary Analysis of a Reusable Launch Vehicle

Authors Daniel Hammerand, James Gariffo, Kevin Roughen, Myles Baker, and Oddvar Bendiksen Introduction Design of modern control laws motivates the creation of state-space models from aeroservoelastic models. Balanced truncation is…

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Developing the Aerodynamics Module for the Integrated Multidisciplinary Optimization Object System (2011)

Authors Steven Doyle, Katherine Alston, and Tyler Winter Introduction The Integrated Multidisciplinary Optimization Objects (IMOO) System delivers physics-based multidisciplinary analysis and optimization (MDAO) capabilities that are required to develop next…

Continue ReadingDeveloping the Aerodynamics Module for the Integrated Multidisciplinary Optimization Object System (2011)

Efficient Creation of Aeroservoelastic Models Using Interpolated Aerodynamics Models (2011)

Authors Daniel Hammerand, James Gariffo, Kevin Roughen Introduction The expense of running computational fluid dynamics (CFD) and computational structural dynamics (CSD) codes motivates the creation of aeroservoelastic models which can…

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Improved Computation of Balancing Transformations for Aeroservoelastic Models via Time Scale Conversion (2011)

Authors Daniel Hammerand, James Gariffo, Kevin Roughen Introduction Design of modern control laws motivates the creation of state-space models from aeroservoelastic models. Balanced truncation is often used to create reduced-order…

Continue ReadingImproved Computation of Balancing Transformations for Aeroservoelastic Models via Time Scale Conversion (2011)

Bio-Inspired Armor Protective Material Systems for Ballistic Shock Mitigation (2011)

Authors Jinhua Huang, Helen Durden, Mostafitz Chowdhury Abstract Severe transient ballistic shocks from projectile impacts, mine blasts, or overhead artillery attacks can incapacitate an occupant at low frequencies, or sensitive…

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Efficient Simulation of Structural Dynamic Systems with Discrete Nonlinearities (2011)

Authors Daniel Hammerand, Kevin Roughen, Jinhua Huang, Daniel Stuewe Introduction Dynamic loading environments often involve complex loading and boundary conditions. For the case of externally mounted aircraft stores, qualification testing…

Continue ReadingEfficient Simulation of Structural Dynamic Systems with Discrete Nonlinearities (2011)