Alexander A. Muravyov
An Approach for Transient Response Calculation of large Nonproportionally Damped Structures using Component Mode Synthesis
413 - 426
2011
5
2
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/10048
https://publications.waset.org/vol/50
World Academy of Science, Engineering and Technology
A minimal complexity version of component mode
synthesis is presented that requires simplified computer
programming, but still provides adequate accuracy for modeling
lower eigenproperties of large structures and their transient
responses. The novelty is that a structural separation into components
is done along a planesurface that exhibits rigidlike behavior, thus
only normal modes of each component is sufficient to use, without
computing any constraint, attachment, or residualattachment modes.
The approach requires only such input information as a few (lower)
natural frequencies and corresponding undamped normal modes of
each component. A novel technique is shown for formulation of
equations of motion, where a double transformation to generalized
coordinates is employed and formulation of nonproportional damping
matrix in generalized coordinates is shown.
Open Science Index 50, 2011