Finite element analysis of U-frame of robotic gait trainer for rehabilitation

Abstract

Abstract The use of robotic trainers in the medical field for rehabilitation has increased in recent years due to the results they can achieve compared to conventional therapy methods. This study proposes the design of a U-frame and handrail assembly in a dynamic bodyweight support system of a robotic trainer and provides the static structural analysis of the model. Von Mises stress distribution and fatigue life of the components have been provided to ensure the safety of the model during the rehabilitation process. The material considered for the simulation on the Ansys workbench is mild steel. The peak stress value observed is 96.64 MPa. In case of fatigue failure, the model provided is safe for the infinite cycle with a safety factor of 2.5.