Model Order Reduction Techniques

with applications in finite element analysis

Zu-Qing Qu

369 pages, parution le 24/09/2004

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Résumé

Despite the continued rapid advance in computing speed and memory the increase in the complexity of models used by engineers persists in outpacing them. Even where there is access to the latest hardware, simulations are often extremely computationally intensive and time-consuming when full-blown models are under consideration.

The need to reduce the computational cost involved when dealing with high-order/many-degree-of-freedom models can be offset by adroit computation. In this light, model-reduction methods have become a major goal of simulation and modeling research. Model reduction can also ameliorate problems in the correlation of widely used finite-element analyses and test analysis models produced by excessive system complexity.

Model Order Reduction Techniques explains and compares such methods focusing mainly on recent work in dynamic condensation techniques:

Compares the effectiveness of static, exact, dynamic, SEREP and iterative-dynamic condensation techniques in producing valid reduced-order models
Shows how frequency shifting and the number of degrees of freedom affect the desirability and accuracy of using dynamic condensation
Answers the challenges involved in dealing with undamped and non-classically damped models
Requires little more than first-engineering-degree mathematics and highlights important points with instructive examples

Academics working in research on structural dynamics, MEMS, vibration, finite elements and other computational methods in mechanical, aerospace and structural engineering will find Model Order Reduction Techniques of great interest while it is also an excellent resource for researchers working on commercial finite-element-related software such as ANSYS and Nastran.

Sommaire

Introduction to Dynamic Model Reduction Techniques
Finite Element Modeling
Theory of Modal Analysis
Static Condensation
Dynamic Condensation
Iteractive Methods for Dynamic Condensation
Selection of Master Degrees of Freedom
Dynamic Condensation of Nonclassically Damped Models
Application I: Model Reduction on System Level
Application II: Model Reduction on Component Level -Superelement Modeling Technique
Applications III: Modal Testing
Summary of Other Model Order Reduction Techniques

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Caractéristiques techniques

	PAPIER
Éditeur(s)	Springer
Auteur(s)	Zu-Qing Qu
Parution	24/09/2004
Nb. de pages	369
Format	16 x 24
Couverture	Relié
Poids	681g
Intérieur	Noir et Blanc
EAN13	9781852338077
ISBN13	978-1-85233-807-7