Reduced Order Modeling of Structures with Preloaded Bolted Joints by the Use of Trial Vector Derivatives

2018 ◽  
pp. 401-404
Author(s):  
Wolfgang Witteveen ◽  
Florian Pichler
Keyword(s):  
Reduced Order Modeling ◽  
Bolted Joints ◽  
Reduced Order ◽  
Trial Vector

Numerical Assessment of Reduced Order Modeling Techniques for Dynamic Analysis of Jointed Structures With Contact Nonlinearities

2018 ◽  
Vol 141 (3) ◽  
Author(s):  
Jie Yuan ◽  
Fadi El-Haddad ◽  
Loic Salles ◽  
Chian Wong
Keyword(s):  
Dynamic Analysis ◽  
Reduced Order Modeling ◽  
Contact Friction ◽  
Joint Interface ◽  
Test Case ◽  
Beam Model ◽  
Reduced Order ◽  
Trial Vector ◽  
Fixed Interface ◽  
Vector Derivative

This work presents an assessment of classical and state of the art reduced order modeling (ROM) techniques to enhance the computational efficiency for dynamic analysis of jointed structures with local contact nonlinearities. These ROM methods include classical free interface method (Rubin method, MacNeal method), fixed interface method Craig-Bampton (CB), Dual Craig-Bampton (DCB) method and also recently developed joint interface mode (JIM) and trial vector derivative (TVD) approaches. A finite element (FE) jointed beam model is considered as the test case taking into account two different setups: one with a linearized spring joint and the other with a nonlinear macroslip contact friction joint. Using these ROM techniques, the accuracy of dynamic behaviors and their computational expense are compared separately. We also studied the effect of excitation levels, joint region size, and number of modes on the performance of these ROM methods.

Lattice Boltzmann Flow Simulations With Applications of Reduced Order Modeling Techniques.

2014 ◽  
Author(s):  
Donald L. Brown ◽  
Jun Li ◽  
Victor M. Calo ◽  
Mehdi Ghommem ◽  
Yalchin Efendiev
Keyword(s):  
Lattice Boltzmann ◽  
Reduced Order Modeling ◽  
Reduced Order ◽  
Flow Simulations ◽  
Modeling Techniques
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