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选用成年健康活体兔皮肤替代残肢皮肤,在UMT-Ⅱ多功能摩擦磨损试验机上通过模拟残肢皮肤/接收腔界面间的黏着和中间过渡摩擦行为,对兔皮肤的摩擦系数、Ft-D曲线、能量损耗以及这两种摩擦行为所引起的兔皮肤摩擦损伤机理进行了研究.结果表明:在0.5或3.5 N法向力作用下,随着往复摩擦位移从±2.5 mm增加到±5 mm,兔皮肤的摩擦行为从黏着状态转变到中间过渡状态,往复摩擦过程中的能量损耗增加;由于中间过渡状态下的兔皮肤摩擦系数较高,能量损耗较大,因而造成的皮肤损伤程度比黏着状态严重;与人体手掌或脚掌皮肤相比,兔皮肤的角质层较薄,很难形成摩擦水泡.
The adult healthy living rabbit skin was used to replace the residual limb skin. The friction coefficient, the Ft-D curve of rabbit skin were simulated on the UMT-Ⅱ multi-purpose friction and wear tester by simulating the adhesion between the residual limbal skin and the receiving cavity interface and the intermediate transitional friction. , Energy loss and the frictional damage mechanism of rabbit skin caused by these two kinds of friction behaviors were studied.The results show that with the reciprocating frictional displacement increasing from ± 2.5 mm to ± 5 mm under the normal force of 0.5 or 3.5 N, Rabbit skin friction behavior from the adhesive state transition to the intermediate transition state, reciprocating friction energy loss increases; due to the transitional state rabbit skin friction coefficient is higher, the energy loss is larger, resulting in a greater degree of skin damage than the adhesive state Serious; compared with the human palm or foot skin, rabbit skin cuticle is thin, it is difficult to form friction blisters.