Experimental modal analysis using laser vibrometer and finite element modeling of milling machine arbor

Abstract

Experimental modal analysis has received a lot of consideration in recent days for dynamic analysis of complicated engineering structure and machine tools. It is a process which is used to determine the inherent dynamic properties of structure such as damping, mode shapes and natural frequencies. The experimental modal analysis benefits in design of all types of structures including automotive components, aircraft components, spacecraft, computers and tennis rackets and golf clubs etc. The present study deals with the experimental investigation of free vibration of milling machine arbor. Experimental modal analysis of milling machine arbor is carried out by using laser vibrometer for measurement and impact hammer for excitation. The experimental results are compared with the numerical predictions obtained using finite element modeling software ANSYS workbench 14.5. The scope of present work is to understand and investigate the modal parameters of milling machine arbor in the form of natural frequency and mode shape for robust design.

Numerical and experimental investigations to analyze the micro-hole drilling process in spark-assisted chemical engraving (SACE)

“…Apart from experimental studies, numerous analytical studies have been reported for analyzing the performance of SACE. Finite element-based modeling has been proven to be a successful method for analyzing the different processes by disintegrating the problems into simpler and smaller elements [30][31][32][33][34][35]. Bhondwe et al [34] established a FEM-based 2D thermal model for predicting the MRR by observing the temperature fields within the work material.…”