Modal, Harmonic and Dynamic Behaviour Evaluation of a Diesel Generator Canopy Frame Using Finite Element Techniques

Diesel generators experience continuous vibration and fluctuating forces during operation, which are transferred to the supporting canopy frame [1],[7]. If not structurally optimised, such vibration may trigger deformation, resonance, or long-term fatigue failures [1],[6],[11]. This study investigates the vibratory behaviour of a heavy-duty genset canopy frame through modal, harmonic and dynamic finite element analyses [3],[4]. A 3D structural model was developed in SOLIDWORKS and examined under multiple frequency-dependent loading scenarios [7]. Natural frequencies and mode shapes were extracted through modal analysis, while harmonic simulations assessed deformation under sinusoidal excitation typical of diesel engines [1],[9]. Additional dynamic simulations evaluated stability under varying operational frequencies [11],[12]. Results show that the frame's natural frequencies do not coincide with the standard excitation range of generator engines, eliminating resonance risk [9],[11]. Harmonic response curves indicate low displacement amplitudes, confirming the structural rigidity of the canopy [2],[7]. The study concludes that the existing frame configuration demonstrates robust dynamic performance, suitable for industrial generator applications [10],[12].