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A Computational Approach for Probabilistic Analysis of Ls-Dyna Water Impact Simulations (Paperback) Loot Price: R339
Discovery Miles 3 390
You Save: R32 (9%)
A Computational Approach for Probabilistic Analysis of Ls-Dyna Water Impact Simulations (Paperback): Lucas G Horta

A Computational Approach for Probabilistic Analysis of Ls-Dyna Water Impact Simulations (Paperback)

Lucas G Horta; Created by Nasa Technical Reports Server (Ntrs), et al

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List price R371 Loot Price R339 Discovery Miles 3 390 You Save R32 (9%)

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NASA s development of new concepts for the Crew Exploration Vehicle Orion presents many similar challenges to those worked in the sixties during the Apollo program. However, with improved modeling capabilities, new challenges arise. For example, the use of the commercial code LS-DYNA, although widely used and accepted in the technical community, often involves high-dimensional, time consuming, and computationally intensive simulations. Because of the computational cost, these tools are often used to evaluate specific conditions and rarely used for statistical analysis. The challenge is to capture what is learned from a limited number of LS-DYNA simulations to develop models that allow users to conduct interpolation of solutions at a fraction of the computational time. For this problem, response surface models are used to predict the system time responses to a water landing as a function of capsule speed, direction, attitude, water speed, and water direction. Furthermore, these models can also be used to ascertain the adequacy of the design in terms of probability measures. This paper presents a description of the LS-DYNA model, a brief summary of the response surface techniques, the analysis of variance approach used in the sensitivity studies, equations used to estimate impact parameters, results showing conditions that might cause injuries, and concluding remarks.

General

Imprint: Bibliogov
Country of origin: United States
Release date: August 2013
First published: August 2013
Authors: Lucas G Horta
Creators: Nasa Technical Reports Server (Ntrs) • et al
Dimensions: 246 x 189 x 2mm (L x W x T)
Format: Paperback - Trade
Pages: 38
ISBN-13: 978-1-287-28091-0
Categories: Books > Social sciences > Politics & government > General
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LSN: 1-287-28091-9
Barcode: 9781287280910

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