NDLI: Modeling of joints for the dynamic analysis of truss structures

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Modeling of joints for the dynamic analysis of truss structures

Content Provider	NASA Technical Reports Server (NTRS)
Author	Belvin, W. Keith
Copyright Year	1987
Description	An experimentally-based method for determining the stiffness and damping of truss joints is described. The analytical models use springs and both viscous and friction dampers to simulate joint load-deflection behavior. A least-squares algorithm is developed to identify the stiffness and damping coefficients of the analytical joint models from test data. The effects of nonlinear joint stiffness such as joint dead band are also studied. Equations for predicting the sensitivity of beam deformations to changes in joint stiffness are derived and used to show the level of joint stiffness required for nearly rigid joint behavior. Finally, the global frequency sensitivity of a truss structure to random perturbations in joint stiffness is discussed.
File Size	1873590
Page Count	44
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19870011134
Archival Resource Key	ark:/13960/t02z64583
Language	English
Publisher Date	1987-05-01
Access Restriction	Open
Subject Keyword	Structural Mechanics Dynamic Structural Analysis Deformation Joints Junctions Perturbation Load Distribution Forces Sensitivity Algorithms Vibration Damping Least Squares Method Beams Supports Springs Elastic Models Stiffness Trusses Large Space Structures Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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