Experimental validation and management of modal shapes and participation factors of a leaf spring using Voronoi tessellation parameters

This study investigates the impact of Voronoi tessellation parameters on the dynamic behaviour of a leaf spring employed in a tensioner for internal combustion engine timing systems. The research utilizes a custom-developed algorithm to apply Voronoi tessellation while maintaining a constant mass by varying the number of seeds and scaling factors. Modal simulations were carried out to determine the natural frequencies, participation factors, and mode shapes of the component. These simulations were validated through experimental tests performed using a hammer impact test, which provided reliable and detailed measurements of the system’s dynamic response under different loading conditions. The experimental results revealed a strong correlation with the simulated data, demonstrating the accuracy of the proposed methodology. By modifying Voronoi tessellation parameters, it was possible to control and predict changes in natural frequencies and participation factors. These findings underscore the potential of Voronoi tessellation in dynamic system optimisation, enabling the design of components with tailored properties for improved performance. This research opens new avenues for integrating Voronoi-based design approaches with topology optimisation, particularly in the frequency domain, paving the way for innovative applications in mechanical and structural engineering.