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Experimental Dynamic Load Simulation by Means of Modal Force Vectors WP1-Report.

Breitbach, E. and Sinapius, M. (1990) Experimental Dynamic Load Simulation by Means of Modal Force Vectors WP1-Report. DLR-Interner Bericht. 232-90 C 02, 31 S.

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Abstract

Increase of size and recent advances in lightweight design of space systems require new approaches to structural testing techniques. This report gives a brief survey on different qualification methods. Then a new concept is proposed in which the base excitation of a spacecraft due to the load events, particularly of the launch and/ or reentry phase, can be simulated by a set of forces acting directly in a specially selected number of structural points. The simulating force time histories are calculated by means of modal force vectors. They compensate for the d`Alembert`s inertia forces due to the transient multi-axial base acceleration. Thus, the approach is called the modal force combination (MFC) method. In this study, four versions of the MFC concept are compared, which differ in the modal force vectors used. In conclusion, the specifications for the experimental verification of the MFC concept are given.

Document Type:Monograph (DLR-Interner Bericht)
Additional Information: LIDO-Berichtsjahr=1990,
Title:Experimental Dynamic Load Simulation by Means of Modal Force Vectors WP1-Report.
Authors:
AuthorsInstitution or Email of Authors
Breitbach, E.UNSPECIFIED
Sinapius, M.UNSPECIFIED
Date:1990
Journal or Publication Title:ESA Contract No. 7509/87/NL/PP WP1-Report.
Number of Pages:31
Status:Published
Keywords:Dynamic Qualification, Multi-axes Transient Test, Flight Load Simulation, Modal Force Combination
HGF - Research field:UNSPECIFIED
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:no assignment
DLR - Research theme (Project):UNSPECIFIED
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: elib DLR-Beauftragter
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 10:41

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