Mixed Numerical-Experimental Identification Based on Modal Testing
Dr. Saeed Badshah, Department of Mechanical Engineering, International Islamic University, Islamabad, Pakistan.
Manuscript received on March 02, 2013. | Revised Manuscript received on April 13, 2013. | Manuscript published on April 30, 2013. | PP: 715-718 | Volume-2, Issue-4, April 2013. | Retrieval Number: D1571042413/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The discrete mass distribution of metallic foam causes discontinuities in their local properties. Mechanical properties of metallic foams depend on their relative densities. A mixed numerical-experimental identification technique is used to identify elastic behavior of Aluminum Foam. The developed identification technique is based on experimental modal model, measured computer tomography density distribution data and FE model. Experimental and numerical eigen values and their corresponding mode shapes are used for identification of elastic behavior. A set of error functions based on measured and numerical eigen frequencies and corresponding mode shapes was developed in MATLAB. The aim of this work is to develop and validate a mixed Numerical-experimental technique for identification of elastic behavior of Aluminum foam.
Keywords: MNET, ANSYS, Identification technique, Inverse Problem, Modal testing.