Simplified Procedure For The Free Vibration Analysis Of Rectangular Plate Structures With Holes And Stiffeners

Polish maritime research

Tae Muk ChoiCreatech Co. Ltd., Busan, KoreaEmailOther articles by this author:De Gruyter OnlineGoogle Scholar¹  Dae Seung ChoPusan National University, Busan, KoreaEmailOther articles by this author:De Gruyter OnlineGoogle Scholar²  Nikola VladimirUniversity of Zagreb, Zagreb, CroatiaEmailOther articles by this author:De Gruyter OnlineGoogle Scholar³ 

[1] Createch Co. Ltd., Busan, Korea;Pusan National University, Busan, Korea;University of Zagreb, Zagreb, Croatia

关键词: Keywords: energy approach;    plate with hole;    stiffened panel;    thick plate;    VAPS software;    free vibration analysis;   

DOI  :  10.1515/pomr-2015-0019

学科分类：工程和技术（综合）

来源: Politechnika Gdanska * Wydzial Oceanotechniki i Okretownictwa

【 摘 要 】

Thin and thick plates, plates with holes, stiffened panels and stiffened panels with holes are primary structural members in almost all fields of engineering: civil, mechanical, aerospace, naval, ocean etc. In this paper, a simple and efficient procedure for the free vibration analysis of such elements is presented. It is based on the assumed mode method and can handle different plate thickness, various shapes and sizes of holes, different framing sizes and types as well as different combinations of boundary conditions. Natural frequencies and modes are determined by solving an eigenvalue problem of a multi-degree-of-freedom system matrix equation derived by using Lagrange’s equations. Mindlin theory is applied for a plate and Timoshenko beam theory for stiffeners. The applicability of the method in the design procedure is illustrated with several numerical examples obtained by the in-house developed code VAPS. Very good agreement with standard commercial finite element software is achieved.

【 授权许可】

Unknown