Comparative evaluation of finite element analysis and experimental validation of the spring mass system of bio-mechanical energy harvester

Energy-harvesting techniques based on biomechanics represent an important option to supply portable electronics through laptops and mobile communication systems for users outside utility grid power access. A new functional energy-harvesting system which extracts energy through regenerative braking of human movements has been developed for this research study. The system achieves maximum energy collection through human motion activities without needing substantial physical activities from users. The project advances through three essential development stages starting from prototype assessment before static modeling and concluding with final production. Development of a harvesting unit proceeded into integration with a suspended backpack system in order to capture mechanical energy from human motion and minimize user-experienced dynamic forces. The system employs a spring-mass-damping mechanism that turns vertical walking motion into rotated gear motion which activates rotary generators for electricity generation. FEA completed static structural analysis for the system to guarantee its performance and safety across different load situations. The system underwent practical tests to prove its energy collection capabilities which were cross-compared against FEA simulation results. Design data from simulations matched experimental results and these results supported the system’s operational reliability while verifying its operational efficiency. This research delivers experimental-based recommendations through the assessment of modern biomechanical power-generation technology along with energy transformation methods to enhance portable energy systems.