Optimal Layout of Shell Stiffeners With Frequency Design Considerations
Keyword(s):
Abstract In this paper, a new method to design the layout of shell stiffeners is introduced. This new approach has been derived from a two-phase spherical micro-inclusions model and resulted in very simple closed-form expressions for the effective material properties. The “relaxed” topology optimization problem can then be solved by general mathematical programming tools. It is very common to experience the eigenvalue switchover when solving topology optimization problems with frequency design considerations. An incremental objective function formulation with two strategies were studied to reduce the oscillation of optimization solutions. Design Examples are presented and compared.
2013 ◽
Vol 394
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pp. 515-520
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2018 ◽
Vol 15
(08)
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pp. 1850073
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2020 ◽
Vol 234
(13)
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pp. 2631-2642
2018 ◽
Vol 59
(5)
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pp. 1471-1482