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  4. Nonlinear structural dynamic analysis by a stabilized central difference method
 
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Nonlinear structural dynamic analysis by a stabilized central difference method

Publikationstyp
Journal Article
Date Issued
2018-10-15
Sprache
English
Author(s)
Soares, Delfim  
Großeholz, Georg  
Institut
Geotechnik und Baubetrieb B-5  
TORE-URI
http://hdl.handle.net/11420/2805
Journal
Engineering structures  
Volume
173
Start Page
383
End Page
392
Citation
Engineering Structures (173): 383-392 (2018-10-15)
Publisher DOI
10.1016/j.engstruct.2018.06.115
Scopus ID
2-s2.0-85049590490
In this work, a simple stabilized central difference technique is discussed, to analyse nonlinear models. The proposed technique is unconditionally stable for linear systems and it provides enhanced stability features for nonlinear applications. The proposed method stands as a direct single step procedure, avoiding any iterative computations when solving nonlinear models; thus, it is very efficient. In addition, it is extremely accurate, providing much reduced period elongation and amplitude decay errors, compared to standard methods. The present work also introduces a criterion for updating the nonlinear system matrices, significantly reducing the computational complexity of the simulation and enhancing the efficiency of the technique. Numerical results are presented along the manuscript, illustrating the performance and accuracy of the proposed methodology.
DDC Class
000: Allgemeines, Wissenschaft
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