FREE VIBRATIONAL ANALYSIS OF CURVED BEAM WITH UNIFORM RECTANGULAR CROSS SECTION

Hanumantharaju H G, Motupalli Jayaprasad

Abstract: Curved beams are plays an important role in different field like house roofing, bridges, cranes, automobiles chasses etc. The study deals with the investigation of free vibrations of thick curved beams of SS316 and MS1018, both experimentally and using ANSYS. The curved beams having different R/t ratio were fabricated by using mild steel material. Three different boundary conditions are imposed for curved beams are as follows; free-free, clamped-free, clamped-clamped. For experimental investigation, magnetic transducer and VIBXpert are used to conduct experiment on different curved beams. The present work also aims at developing a numerical model for comparing ANSYS results with experimental results to analyze the frequencies and mode shapes corresponding to three different boundary conditions. The curved beam were modelled, meshed and analyzed using ANSYS. The first ten natural frequencies from finite element solutions are then compared with the experimental results. These effects also become more significant for higher modes. It is also observed that the finite element solutions are closely in agreement with experimental results

Keywords: Curved beams, Experimental investigation, Natural frequencies, modes

DOI: https://doi.org/10.15623/ijret.2015.0411063