This study examines the impact of resonant elements on the vibration absorption capability of car door constructions. Utilizing vibration theory, this study ascertains the open and closed intervals of the absorption spectrum (bandgap) to enhance vibration attenuation efficacy. Simulation results indicate that resonant elements can provide a broad bandgap and effectively attenuate vibrations at targeted frequencies of 25 Hz, 60 Hz, and 150 Hz. The numerical evaluation demonstrates that installing these resonators reduces maximum displacement by ratios of 8.86, 4.04, and 5.27 for 25, 60, and 150 Hz, respectively. The total added mass of the resonators is approximately 1.21 kg. The use of resonant elements into doors markedly improves vibration absorption capabilities while maintaining the structural integrity due to their small dimensions. The study validates that the implementation of resonant elements constitutes an efficient and viable numerical method for mitigating vibrations in door structures, with potential for extensive application in engineering systems necessitating vibration control without modification of the original structure