Natural frequency evolution due to damage for a fixed-free steel beam

Published: 21-09-2020| Version 2 | DOI: 10.17632/rpvh2y2dhv.2
Gilbert-Rainer Gillich,
Zeno-Iosif Praisach,
Darian Onchis


We provide data that represent the first ten natural frequencies for the transverse (out-of-plain) vibration modes for a steel cantilever beam in an intact and damaged state. Simulation is made using ANSYS; we use a mesh made with hexahedral elements that have the maximum edge dimension 2 mm. The beam has the length 1000 mm, the width 50 mm, and the thickness of 5 mm. The damage is an open crack that has the distance between its faces 2 mm, and the depth reducing in nine steps the beam thichness (for instance the damage with depth 1.25 mm reduces the thickness with 25% and this feature is used to characterize it). We generated 194 damages at different locations for each damage depth.


Steps to reproduce

Create a beam with dimensions 1000 mm, 50mm and 5 mm Fix the beam at one end (clamping on the cross-section) Create a mesh with 2mm edge hexahedral elements Create damage with the desired depth and 2 mm between the parallel/transversal faces of the crack. Run the modal analysis.