Model Reduction and Substructuring Techniques for the Vibro-Acoustic Simulation of Automotive Piping and Exhaust Systems

2011 ◽  
pp. 1055-1064 ◽  
Author(s):  
Jan Herrmann ◽  
Michael Junge ◽  
Lothar Gaul
Keyword(s):  
Model Reduction ◽  
Acoustic Simulation ◽  
Substructuring Techniques ◽  
Exhaust Systems

Eliminating Boundary Nodes in Substructuring of Large Structures

2014 ◽  
Author(s):  
Omid Kazemi ◽  
Parviz E. Nikravesh
Keyword(s):  
Model Reduction ◽  
Degrees Of Freedom ◽  
Simple Structure ◽  
Reduced Model ◽  
Original Structure ◽  
Large Structure ◽  
Component Structure ◽  
Large Structures ◽  
Two Component ◽  
Substructuring Techniques

Substructuring techniques have been widely used in model reduction of large structures. In these methods a large structure is partitioned into several components and reduced components are built. Boundary degrees-of-freedom (DoF) at the interfaces between components are used to assemble the reduced components and to form a reduced model of the original structure. In the current substructuring methods the boundary DoF or a transformation of these DoF remain in the reduced model. In this paper a methodology is suggested that could eliminate the boundary DoF from the reduced model which in turn leads to having even a smaller reduced model. This method which uses a different partitioning of the DoF of the structure is illustrated for a two-component structure. An example on a simple structure shows how the method can be implemented. The results show that the same level of accuracy compared to a standard substructuring can be obtained with fewer number of DoF in the reduced model.

Expansion of PM into automotive exhaust systems

1997 ◽  
Vol 53 (7-8) ◽  
pp. 43
Author(s):  
J Mandel
Keyword(s):  
Automotive Exhaust ◽  
Exhaust Systems

Nonlinear Model Reduction by Moment Matching

2017 ◽  
Author(s):  
Giordano Scarciotti ◽  
Alessandro Astolfi
Keyword(s):  
Model Reduction ◽  
Nonlinear Model ◽  
Moment Matching ◽  
Nonlinear Model Reduction

Combined H2/H∞ Model Reduction

1989 ◽  
Author(s):  
Wassim M. Haddad ◽  
Dennis S. Bernstein
Keyword(s):  
Model Reduction
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