Investigation on Static & Dynamic Behaviour of Stiffened Panels

Stiffeners are secondary plates or sections which are attached to beam webs or flanges to stiffen them against out of plane deformations.Almost all main bridge beams will have stiffeners. However, most will only have transverse web stiffeners, i.e. vertical stiffeners attached to the web. Deep beams sometimes also have longitudinal web stiffeners. It is this rigidity which engineer attempt to utilize when they design thin walled structure such as door, plate girders, box girders and so on. This restraint can be provided by folding the plate along parallel lines, which lie in the longitudinal direction, or restraining a plate is to provide longitudinal stiffener, which are additional plate elements whose planes are inclined to that of the plate. This paper aims to design and develop the light weight, high strength stiffened panels for shaper frames and Machine tool structures. A variety of simple analysis methods have been developed for the analysis of stiffened panels. These methods typically belong to one of the following classes: analysis based on smeared properties, simple plate analysis under simple supports, and accurate linked or segmented plate analysis or finite strip analysis. The more complicated or detailed modelling usually employs discretized models such as finite element and boundary element analysis.