本文選題：眼外肌　切入點(diǎn)：超彈性　出處：《醫(yī)用生物力學(xué)》2017年01期 　論文類型：期刊論文

【摘要】：目的確定眼外肌的Ogden超彈性模型參數(shù)剪切模量(μ)和曲率(α),通過數(shù)值模擬為臨床眼外肌手術(shù)提供理論依據(jù)。方法通過單軸拉伸實(shí)驗(yàn)測試離體狐眼外肌的被動行為,并用一階Ogden超彈性模型及ABAQUS軟件對其進(jìn)行超彈性分析。結(jié)果實(shí)驗(yàn)結(jié)果表明,狐眼外肌的被動行為是非線性的。獲得了相應(yīng)的超彈性參數(shù)值,其中μ=(16.57±3.76)kPa,α=8.16±1.63。當(dāng)應(yīng)變大于6%時(shí),一階Ogden模型的計(jì)算結(jié)果與實(shí)驗(yàn)結(jié)果之間沒有顯著性差異(P0.05)。計(jì)算結(jié)果與數(shù)值模擬結(jié)果都能很好地?cái)M合實(shí)驗(yàn)結(jié)果。結(jié)論所確定的超彈性參數(shù)可作為狐眼外肌數(shù)值建模的輸入量。
[Abstract]:Objective to determine the shear modulus (渭) and curvature (偽) of the Ogden superelastic model of extraocular muscles, and to provide a theoretical basis for the operation of the extraocular muscles by numerical simulation. Methods the passive behavior of the extraocular muscles in vitro was measured by uniaxial stretching test. The hyperelastic analysis was carried out with the first-order Ogden hyperelastic model and ABAQUS software. The experimental results show that the passive behavior of the extraocular muscle of fox is nonlinear. The corresponding hyperelastic parameters are obtained, of which 渭 ~ (1) is 16.57 鹵3.76 KPA, 偽 ~ (8) is 8.16 鹵1.63. When the strain is greater than 6, the hyperelastic parameters are obtained. There is no significant difference between the results of the first order Ogden model and the experimental results. Both the calculated results and the numerical simulation results can fit the experimental results very well. Conclusion the superelastic parameters can be used as input for the numerical modeling of the outer fox eye muscle.
【作者單位】： 太原理工大學(xué)力學(xué)學(xué)院應(yīng)用力學(xué)與生物醫(yī)學(xué)工程研究所山西省材料強(qiáng)度與結(jié)構(gòu)沖擊重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金項(xiàng)目(11032008,31271005)
【分類號】：R318.01

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