DYNAMIC ANALYSIS ON STEEL FIBRE CONCRETE BEAMS

In this study Dynamic property of a structural element which is frequency, damping and mode shapes are described by a process called modal analysis. Structural condition can be monitored by analyzing the changes in frequencies and mode shapes. All materials posses certain amount of internal damping. Similarly steel fibers also produce some internal damping. A system is a combination of elements, for example a structure is a system whose elements are beams, columns, slabs, footings .etc. In all those elements I have selected beam elements. Many research works are conducted on different type of materials under dynamic loading. This paper presents the variation of dynamic characteristics of a steel fiber concrete cantilever beam in which steel fibers are used as a damping material. The main objective of this work is to estimate the natural frequency and damping ratio of a concrete cantilever beams with varying steel fiber percentages and with varying depth of beam by Harmonic analysis using ANSYS