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Vol. 44 (2003) No. 3 December n. 143


Hangai Prize papers: Design of Stiffened Plate Structures Using Structural Intensity Concept

< Table of Contents for Vol. 44 (2003) No. 3 December n. 143
  • Journal Name: Journal of the International Association for Shell and Spatial Structures (J. IASS)
  • ISSN: (Electronic Version) 1996-9015
  • ISSN: (Print Version) 1028-365X
  • Issue: Vol. 44 (2003) No. 3 December n. 143
  • Pages: 189-195
  • Title: Hangai Prize papers: Design of Stiffened Plate Structures Using Structural Intensity Concept
  • Author(s): Y. C. Tse, X. D. Xu and H. P. Lee
  • Keywords: Structural Intensity, stiffened plate, vibration
Abstract
Structural intensity is the vibration power flow per unit cross-sectional area in elastic medium. In the present study, the computational method for structural intensity for thin plate elements is illustrated. The transmission of vibration energy flows in three plate models with different stiffener arrangements and loadings are analyzed through the structural intensity patterns. The application of using structural intensity technique on the design optimization for a typical stiffened plate is explored and presented. The comparison of results with the usual design criteria which are based on the minimization of structural strength or stiffness shows that the structural intensity technique can be acted as one of the design criteria for designing stiffened plate structures. The relationships between structural intensity and structural mode shapes as well as the effects of stiffeners on the changes in energy flow are discussed.

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