DEVELOPMENT AND STRUCTURAL ANALYSIS OF A MOTORIZED ERGOMETER USING FINITE ELEMENT SIMULATION

This paper presents the design and dynamic analysis of a motorized ergometer for upper extremity rehabilitation. The primary objective of the study is to develop a robust and efficient mechanical design that can accommodate varying user loads while ensuring smooth operation and structural stability. The system incorporates a worm gear mechanism to provide controlled motion of the pedals, driven by a DC motor. Key mechanical parameters such as torque, force transmission, and pedal geometry were carefully considered to optimize user comfort and performance. Finite Element Analysis (FEA) was conducted using ANSYS to evaluate the structural integrity of the design under real-world loading conditions. The simulation focused on stress distribution and deformation analysis of critical components, including the frame, pedals, and gear mechanism. The results demonstrated that the design is capable of withstanding the applied forces with minimal deformation and acceptable stress levels, ensuring long-term durability.