期刊
COMPUTERS & STRUCTURES
卷 184, 期 -, 页码 14-24出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compstruc.2017.02.003
关键词
Negative structure; Dynamic Stiffness Method; Natural frequencies; Plates with holes; Independent Coordinate Coupling Method; Rayleigh-Ritz Method
资金
- Marsden Fund Grant
- Royal Society of New Zealand
The presence of a hole, cut-out or void in a structure makes it difficult to be modelled for calculating natural frequencies. A theoretical basis for simplifying the modelling of cut-outs in a structure by attaching a negative structure is presented. The Dynamic Stiffness Method has been used to prove that this method yields the required natural frequencies. The derivations also show the presence of additional natural frequencies which correspond to the vibration of the positive and negative parts vibrating together while the actual structure with the hole or cut-out usually remains stationary. (C) 2017 Elsevier Ltd. All rights reserved.
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