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利用万能材料试验机和多功能数据采集分析系统,在往复摩擦模式下模拟假肢接收腔-残肢皮肤穿戴界面,研究了不同切向力作用下两种常用的假肢接受腔材料与皮肤的摩擦能量损耗.结果表明:接受腔-皮肤界面往复摩擦过程中,随着切向力的增加,皮肤发生的弹性变形增大,皮肤摩擦前后的温差增加,摩擦过程中的能量损耗增大.接受腔材料表面结构直接影响着残疾人穿戴假肢的舒适性.相较于表面粗糙度较大的国内生产接受腔材料,表面粗糙度较小的进口接受腔材料降低了皮肤的摩擦能耗,减轻了皮肤的发热和变形,降低了皮肤损伤的风险,提高了与皮肤界面的适配性.
Using the universal testing machine and multi-functional data acquisition and analysis system, the interface between the prosthesis-receiving limbs and the residual limbs was simulated under the reciprocating friction mode. The friction energy between the two commonly used prosthetic components and the skin under different tangential forces The results show that with the increase of the tangential force, the elastic deformation of the skin increases and the temperature difference before and after skin rubbing increases and the energy loss in the friction process increases with the reciprocating friction between the chamber and the skin, The surface structure has a direct impact on the comfort of wearing prosthetic limbs.Compared with the domestic production of receiving cavity material with larger surface roughness, the smaller surface roughness of the receiving cavity material reduces the frictional energy consumption of the skin, alleviates the skin’s Heat and deformation, reduce the risk of skin damage and improve the interface with the skin adaptability.