Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Optimal passive orthosis configuration for squat to stand assistance
Submission Author:
Denis César Mosconi Pereira , SP
Co-Authors:
Denis César Mosconi Pereira, Adriano Siqueira
Presenter: Denis César Mosconi Pereira
doi://10.26678/ABCM.DINAME2023.DIN2023-0024
Abstract
In this work we used computational simulation to determine the best configuration of a passive orthosis modeled as a spring and used to assist the squat to stand movement. Two configurations were considered: knee and hip-knee-ankle assistance. The optimal value of spring stiffness was also determined using. The simulations were carried out using OpenSim Moco and a musculoskeletal model. The results obtained demonstrated that the best choice is orthosis that assists only the knee, with a stiffness of 66 N.m/rad, , as it promotes a reduction in muscle activations, ensuring the execution of the movement in a smooth and continuous way. Despite the hip-knee-ankle configuration promoting a reduction in muscle activation when compared to the movement performed without the orthosis, such reduction was lower than that obtained with the orthosis applied only to the knee.
Keywords
Passive orthosis, Computational Biomechanics, OpenSim Moco
