Innovative approaches in teaching modal analysis: Utilizing additive manufacturing for structural engineering education

Teaching modal parameters in civil engineering, particularly structural engineering, is essential for understanding structural behavior under mechanical vibrations. As projects grow more complex, the need for rigorous testing increases, making theoretical and practical education crucial. Tools like Matlab, SAP2000, ETABS, and ANSYS are widely used for modal analysis, while practical methods include shake table tests and data collection with accelerometers. Recently, additive manufacturing has gained traction as a cost-effective alternative for creating educational platforms, replacing traditional steel elements with thermoplastics. This innovative approach reduces costs and enhances the practicality of teaching, allowing for visual demonstrations of vibration effects. The article discusses the design of an academic platform using additive manufacturing to teach modal parameters in structural systems, with experimental tests conducted to determine the structure’s modal parameters through free vibration analysis.