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Primal and Dual Integrated Force Methods Used for Stochastic AnalysisAt the NASA Glenn Research Center, the primal and dual integrated force methods are being extended for the stochastic analysis of structures. The stochastic simulation can be used to quantify the consequence of scatter in stress and displacement response because of a specified variation in input parameters such as load (mechanical, thermal, and support settling loads), material properties (strength, modulus, density, etc.), and sizing design variables (depth, thickness, etc.). All the parameters are modeled as random variables with given probability distributions, means, and covariances. The stochastic response is formulated through a quadratic perturbation theory, and it is verified through a Monte Carlo simulation.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Patnaik, Surya N.
(Ohio Aerospace Inst. OH, United States)
Date Acquired
September 7, 2013
Publication Date
June 1, 2005
Publication Information
Publication: Research and Technology 2004
Subject Category
Statistics And Probability
Distribution Limits
Work of the US Gov. Public Use Permitted.
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