Design & FEA and multi body system analysis of human rescue robot arm

Abstract

In this study, human rescue robot arm was designed using an integrated application on both Computer Aided Design (CAD) and Computer Aided Engineering (CAE) methods. The components and assembly model of the system were created using solid state modelling technique with CAD that enables the structural and Multi Body System (MBS) analysis with CAE methods. The strength of the design was performed by Finite Element Analysis (FEA). The maximum stress value in initial static case was calculated about 8 MPa. Then, MBS analysis consisted of kinematic and transient structural was conducted to find the torque requirements, velocity and acceleration and to check the mechanical safety of the system under dynamic conditions. Transient structural analysis showed that the yield strength of the selected material (Aluminum 6061) higher than maximum stress. The results indicated that designed robot arm is mechanically safe (safety factor=15) to execute to human rescue operation.