Analysis of the Rrigidity and the Vibration of Flat Corrugated Plates

주름판의 강성해석 및 진동해석

Stiffened plate structure, which is generally used in the various structural design to develope the load carrying capacity, is classified in two groups; one is the plate stiffened with stiffeners, the other is corrugated plate. In the studies on those structures, the studies on the stiffened plates with stiffeners have been much studied with both quantities and qualities according to requirements of the minimum-weight structural design and the development in many industrial fields, especially automobile, ship and aerospace fields, but the studies on the corrugated plates are undeveloped in comparison with the stiffened plates, and also the analytical stiffness on the corrugated plates remains as the imperfect. In the present studies, the analytical method on the stiffness of corrugated plates made by folding is proposed, and the stiffness equation of corrugated plates with some angle is derived and generalized. The purpose of the present study is to contribute to the design of corrugated plates and to determine the optimum aspect ratio for parameters that decide the aspect of corrugated plates.

본 연구에서는 각이 지게 주름잡힌 주름판 구조물(산형, 사다리꼴형, 장방형 주름판)의 강성을 해석 하고, 이 강성식들을 일원화하여 한개의 식으로 표현하여 주고 자 한다. 이론 해석은, 연결부에서의 각도가 변형중에 변하지 않는다는 가정하에, 등가의 직교이방성판의 강성식을 유도하였다. 또한, 이론적으로 얻어진 강성치를 진 동해석에 적용시킴으로서, 직교이방성판으로서의 주름판의 고유진동수를 구하였다. 그리고 이를 진동실험에서 얻은 결과 및 PC용 슈퍼 SAP에서 얻은 수치결과와 비교함으로 서 이론의 신뢰성을 입증하였다.