摘要
为了分析人体以不同速度和不同负重行走工况下的下肢生物力学特性,基于生物力学分析软件OpenSim建立一种人体下肢肌肉骨骼模型。利用逆向动力学,以地面支反力和运动控制点坐标为驱动,完成了人体以不同速度和负重工况下的步态行走仿真。得到人体以相同速度不同负重和相同负重不同速度行走工况下,踝关节、膝关节和髋关节的力矩变化曲线,分析了行走速度和负重与关节力矩之间的变化关系,得出行走速度和负重与关节力矩的变化呈正相关关系;给出了比目鱼肌、腓肠肌和胫骨前肌的肌肉活性变化曲线,讨论了行走速度和负重与肌肉活性之间的联系,得出肌肉活性随着行走速度和负重的增加而增加。
In order to analyze the biomechanical characteristics of human lower limbs when the walking speed and load weight are different,a human lower limb musculoskeletal model is established with the biomechanical analysis software OpenSim.Using reverse dynamics,the human gait walking at different speeds and load weights is simulated;the gait walking is driven by ground reaction force and coordination of motion control points.The change curves of the torques of ankle joint,knee joint and hip joint are obtained when the human walks at the same speed but with different load weights and then with the same load weight at different speeds.The relationships of joint torque with the walking speed and load weight are analyzed,and the results show that the walking speed and load weight are positively correlated with joint torque.The muscle activity curves of soleus muscle,gastrocnemius muscle and tibialis anterior are given.The relationships of the muscle activity with the walking speed and load weight are discussed.The analysis results also show that the muscle activity increases with the increase of walking speed and load weight.
作者
郭超
何育民
孙朝阳
汪朝晖
GUO Chao;HE Yumin;SUN Zhaoyang;WANG Zhaohui(School of Mechanical and Electrical Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,China)
出处
《机械科学与技术》
CSCD
北大核心
2021年第9期1355-1360,共6页
Mechanical Science and Technology for Aerospace Engineering
基金
陕西省自然科学基础研究计划项目(2014JM7269)。
关键词
下肢
步态
逆向动力学
关节力矩
肌肉活性
lower limb
gait
reverse dynamics
joint torque
muscle activity
