OPTIMIZATION OF TUBULAR STEEL LATTICE TELECOMMUNICATION TOWERS, SUBJECTED TO WIND LOAD INCLUDING VORTEX SHEDDING

• Type: Article in International Conference Proceedings Book
• Date: 2017

Authors

Vieira, D (Author) Other; Rui Carneiro de Barros (Author) FEUP

Conference proceedings International

Title: Mechanics and Materials in Design

Pages: 1873-1874

M2D2017 - 7 th International Conference on MECHANICS AND MATERIALS IN DESIGN

Albufeira/Portugal, 11-15 June

Indexing

ISI Web of Knowledge - 0 Citations

Other information

Authenticus ID: P-00N-TVP

Abstract (EN): The main goal of this work is to evaluate the response of the diagonals members of steel lattice towers with circular profiles cross-sections, under the wind load determined according to the current regulation EN1991-1-4. For this study, it has been developed a program in VBA using Excel for the evaluation of the response due to vortex shedding induced vibrations and possible failure due to fatigue. A formulation is proposed is for the mitigation or supressing of the amplitudes of vibration, using the Ansys Fluent software for testing. The results obtained of applying small fins in the center section of certain diagonals of the telecommunication tower, with potential to failure due to vortex shedding in the perpendicular direction of wind load, are expected to minimize the damage due to fatigue and increase the expected life time of the structure.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 2