This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Equal Probability Load Conditions in Random Analysis
Technical Paper
2007-01-2626
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
This paper describes and illustrates a method to derive design stresses on structural parts subjected to random loads.
Two sets of random loads have special properties and are suitable for practical use. The first is a balanced (time correlated) load condition, while the other with an equal probability is based on an eigenvector solution. The random loads are generated, for example, by MSC/NASTRAN Frequency Response Solution, using the Random module that calculates the related RMS values.
Results for a sandwich plate of a satellite structure are presented and it is shown that the equal probability method yields design stresses that are closer to optimal (smaller) or at most equal to the results of the worst-case approach.
Topic
Citation
Zalmanovici, A. and Ilton Gomes, J., "Equal Probability Load Conditions in Random Analysis," SAE Technical Paper 2007-01-2626, 2007, https://doi.org/10.4271/2007-01-2626.Also In
References
- Locke James E. “Balanced Continuous Turbulence Gust Loads Using Solution 146” MSC's proceedings 1999 Aerospace User's Conference 1999
- Pototzky Anthony S. Zeiler Thomas A. Boyd Perry III “Time - Correlated Gust Loads Using Matched Filter Theory and Random Process Theory - A New Way of Looking at Things” AIAA paper No. 89-1374-CP
- Noback R. “The Generation of Equal Probability Design Load Conditions, Using P.S.D. Techniques” (NLR TR 85014 U), NLR, 23.1 1985
- Blakely Ken “MSC/NASTRAN Basic Dynamic Analysis” Version 68, MSC 1993
- “MSC/NASTRAN, Quick Reference Guide” Version 70.5, The MacNeal-Schwendler Corporation
- Sullins R. T. Smith G. W. Spier E. E. “Manual for Structural Stability Analysis of Sandwich Plates and Shells” NASA CR-1457