รายละเอียดผลงาน

Abstract. Wheelchair users encounter vertical vibrations that can impinge on their comfort and well-being. This study introduces and corroborates a sophisticated 13-DOF model for a wheelchair-occupant system, accounting for unique input excitations at each wheel. Employing the Newmark method and Fourier analysis, the model scrutinizes vibra- tion responses within time and frequency spectrums. Experimental data substantiate the model, evidencing an impressive goodness-of-t. Furthermore, the investigation delves into the biodynamic reactions of wheelchair users, exploring how cushion attributes in- uence vibration dynamics. It is determined that seat cushions devoid of foam signif- icantly augment vibration intensity throughout all body regions. The model emerges as an instrumental resourc