Indian Journal of Science and Technology

Abstract

Objectives: Random analysis of 74 kg Indian human male subject has been done in this study. Finite element model of human subject has been developed using anthropometric data corresponding to 95th percentile 74 kg human subject. Method/Analysis: Finite element method has been used to study the dynamic response of the human subject when it is subjected to random vibration. Geometry has been developed using the designing tool i.e., Solid Works and analysis has been done on the simulation software i.e., Ansys. During this study, different magnitude of acceleration i.e., 0.2, 0.4 and 0.8 m/s2 has been applied in three different directions i.e., vertical, fore-and-aft and lateral direction. Findings: Acceleration of magnitude 0.2, 0.4 and 0.8 m/s2 has been applied in all the directions and results in the form of deformations and Vonmises stresses is found at these magnitude of acceleration applied in all the directions. It has been observed that maximum effect of vibration in terms of stress and deformation in human subject is found when the vibration is applied in vertical direction at a magnitude of 0.8 m/s2. The minimum effect of vibration is found when vibration is applied in the lateral direction. Applications/Improvement: The results obtained from current study will be beneficial to design automobile seats and components. Experimental study can also be performed to validate the obtained results. 

Keywords: Human Body, Modal Analysis, Natural Frequency, Sitting Posture, FEM