A Method to Improve the Modal Convergence for Structures With External Forcing
Keyword(s):
The traditional approach of using free vibration modes in the assumed mode method often leads to an extremely slow convergence rate, especially when discete interactive forces are involved. By introducing a number of forced modes, significant improvements can be achieved. These forced modes are intrinsic to the structure and the spatial distribution of forces. The motion of the structure can be described exactly by these forced modes and a few free vibration modes provided that certain conditions are satisfied. The forced modes can be viewed as an extension of static modes. The development of a forced mode formulation is outlined and a numerical example is presented.
2012 ◽
Vol 157-158
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pp. 1000-1003
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2012 ◽
Vol 4
(3)
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pp. 267-280
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2018 ◽
Vol 88
(7)
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pp. 1213-1228
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Keyword(s):
2012 ◽
Vol 4
(3)
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pp. 267-280
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2020 ◽
Vol 559
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pp. 125085
Keyword(s):
Approximate natural vibration analysis of rectangular plates with openings using assumed mode method
2013 ◽
Vol 5
(3)
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pp. 478-491
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Keyword(s):
2019 ◽
Vol 15
(2)
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pp. 755-765
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2020 ◽
Vol 67
(4)
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pp. 1500-1520
2014 ◽
Vol 229
(4)
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pp. 340-349
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