COBEM99

S24 Mecânica dos Sólidos

Title:

ANÁLISE DE FLAMBAGEM DE LÂMINAS NERVURADAS EM PVC

Summary :

BUCKLING ANALYSIS OF PVC SHEETS WITH RIBS ABSTRACT: THIS STUDY HAS A TECHNICAL AND APPLIED CHARACTER. A PVC STRUCTURED WALL PIPE CAN BE PRODUCED BY SPIRALLY WINDING A RIBBED STRIP HAVING A MALE-FEMALE LOCK, CHEMICALLY WELDED BY AN ADHESIVE. THESE PIPES ARE "FLEXIBLE" AND ARE USED MAINLY IN UNDERGROUND INSTALLATIONS, TO CONVEY FLUIDS IN FREE DUCT REGIME. INITIAL STUDIES HAVE INDICATED THAT THE BUCKLING RESISTANCE OF THE RIBS FROM THE SHEET COILING TO THE TUBE MANUFACTURING, IS THE CRITICAL DESIGN PARAMETER. THIS STUDY PRESENTS THE THEORETICAL ANALYTICAL DEVELOPMENT IN ORDER TO OBTAIN THE CRITICAL BUCKLING MOMENT OF THESE SHEETS. THIS ANALYSIS USES CONCEPTS INITIALLY DEVELOPED TO CALCULATE BUCKLING RESISTANCE IN MONOSYMMETRICAL PROFILES THAT IS VERY USED IN THE METALLIC STRUCTURE INDUSTRY. SINCE THE MATERIAL USED WAS PVC, THAT HAS DIFFERENT MECHANICAL PROPERTIES THAN STEEL AND ALUMINUM, IT WAS NECESSARY TO CONSIDER THE DIFFERENCES IN THE ANALYTICAL TREATMENT. IT IS IMPORTANT TO EMPHASIZE THAT THE RESULTS OBTAINED ARE PRODUCT OF THE COLLECTIVE WORK OF ENGINEERS FROM INDUSTRY AND UNIVERSITY. KEY-WORDS: BUCKLING, STRUCTURED WALL PIPE, PVC.

Author :

Kaminski, Paulo Carlos
Laterza, Luiz B. de M.

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