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Response of joint dominated space structuresAn approximate method is developed for estimating the transient response of nonlinear systems in terms of linearized modes of response. Its advantages are that it is computationally more efficient than the time integration method and that it is possible to view the design problem in the more traditional physical terms of modal response. The major drawback of the approximate method is loss of accuracy. It seems that both approximate methods and time integration have their roles in design. Approximate methods provide efficient tools for performing parametric studies and they supply physical insights into how to optimize system performance that are not easily inferred from strictly numerical methods. Time integration provides a method for assessing the accuracy of the approximate solution for key simulations and for fine tuning the final design. In the procedure presented the nonlinear system is approximated by an equivalent linear system in which the system parameters are constant over the range of transient response.
Document ID
19870016638
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Date Acquired
September 5, 2013
Publication Date
May 1, 1987
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
NAS 1.26:180564
NASA-CR-180564
Accession Number
87N26071
Funding Number(s)
CONTRACT_GRANT: NAG1-612
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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