老年人踝关节外骨骼机械结构的数值模拟与设计

Ammir Rojas, Julio Ronceros, Carlos Raymundo, Gianpierre Zapata, Leonardo Vinces, Gustavo Ronceros
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引用次数: 0

摘要

本文介绍了面向老年用户的踝关节外骨骼的数值模拟和设计。在设计过程中,对这一年龄段的用户进行了解剖学测量,以获得符合人体工程学、耐磨且异常可靠的机械结构。此外,还对设计进行了验证,以支持 "体重范围 "在 50 至 80 公斤之间的用户,从而评估机械装置在第一主应力、安全系数、Von Mises 应力和主变形等相关载荷范围内的反应,并使用三维 CAD 软件 Autodesk Inventor 和理论相关性来计算结构中脚踝的位移和旋转角度。同样,还对两种材料进行了评估:ABS(丙烯腈-丁二烯-苯乙烯)和碳纤维增强聚合物。最后,在通过数值模拟环境对系统的移动性进行验证的保证下,对设计的部件进行了组装,突出强调了通过三维打印生成,降低了制造成本,使其能够普及,并确保更多人能够受益于这种踝关节外骨骼。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical Simulation and Design of a Mechanical Structure of an Ankle Exoskeleton for Elderly People
This article presents the numerical simulation and design of an ankle exoskeleton oriented to elderly users. For the design, anatomical measurements were taken from a user of this age group to obtain an ergonomic, resistant, and exceptionally reliable mechanical structure. In addition, the design was validated to support a “weight range” of users between 50 and 80 kg in order to evaluate the reaction of the mechanism within the range of loads generated in relation to the first principal stress, the safety coefficient, the Von Mises stress, and principal deformations, for which the 3D CAD software Autodesk Inventor and theoretical correlations were used to calculate the displacement and rotation angles of the ankle in the structure. Likewise, two types of materials were evaluated: ABS (acrylonitrile butadiene styrene) and a polymer reinforced with carbon fiber. Finally, the designed pieces were assembled with the guarantee that the mobility of the system had been validated through the numerical simulation environment, highlighting that by being generated through 3D printing, manufacturing costs are reduced, allowing them to be accessible and ensuring that more people can benefit from this ankle exoskeleton.
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