Modal Testing of Reinforced Concrete Single Storey Roof Slab (B) of Structural laboratory at IIT Kharagpur with Construction Joint using Reaction Mass Shaker (Indirect Method)
Author(s):
Shashi Shekhar Singh , MVN University, Palwal, Haryana; Ayush Srivastava, MVN University, Palwal, Haryana; Dhirendra Kumar Singh, AMITY University, Gurgaon, Haryana; Pankaj Kaushik, MVN University, Palwal, Haryana; Avinash Kumar, Satya College of Engineering and Technology, Palwal, Haryana
Keywords:
FEM – Finite Element Modeling, EMA – Experimental Modal Analysis, Modal Analysis – A method to obtain the modal parameters of any structure, FRF – Frequency Response Function, Stiffness – It is the rigidity of an object, indirect method
Abstract:
Modern structures are becoming more and more slender but with improved stiffness with use of large number of materials in combination, making the predictions of dynamic characteristics of such structures extremely difficult for the analysis using commercially available general purpose finite element softwares. On the other hand, if a building floor is properly excited and the input force and the resulting responses are accurately measured with proper hardware, the dynamic characteristics can be found out without much error. In indirect method of analysis, the structure is excited using reaction mass shaker and the force input to the structure was measured by Measuring the acceleration of the shaker armature and by multiplying it by the mass of the combined armature and reaction mass assembly. The present work is focused on actual physical measurement of input force of a reaction mass shaker to a typical building floor to determine the floor dynamics. A case study on a Single storey roof slab (B) of Structural laboratory at IIT Kharagpur with Construction Joint establishes the advantages of this kind of combined experimental and numerical methods.
Other Details:
| Manuscript Id | : | IJSTEV1I10106
|
| Published in | : | Volume : 1, Issue : 10
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| Publication Date | : | 01/05/2015
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| Page(s) | : | 209-213
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