本文選題：橡膠材料　切入點：超彈性　出處：《固體力學(xué)學(xué)報》2017年05期

【摘要】：論文討論了炭黑填充橡膠材料的唯象本構(gòu)模型.考慮到Mooney模型無法表征橡膠類材料大變形階段的力學(xué)特性,首先利用丁苯橡膠單向拉伸實驗數(shù)據(jù)和Treloar實驗數(shù)據(jù),對Mooney模型進行了分析,討論了炭黑體積分數(shù)與Mooney模型準確表征橡膠材料應(yīng)變區(qū)間大小的關(guān)系,以及Mooney模型對橡膠材料純剪切和等比雙向拉伸等復(fù)雜變形的預(yù)測能力,同時也分析了兩個材料參數(shù)對Mooney模型的影響.最后在Mooney模型的基礎(chǔ)上添加了一個以主伸長比為變量的修正項,且改進后的Mooney模型滿足Treloar和Ogden的六項基本假設(shè).通過與實驗數(shù)據(jù)對比分析,改進Mooney模型可以較好地描述橡膠材料大變形階段的應(yīng)力應(yīng)變關(guān)系,同時也提高了對橡膠材料純剪切和等比雙向拉伸等復(fù)雜變形的預(yù)測能力.
[Abstract]:The phenomenological constitutive model of carbon black filled rubber materials is discussed in this paper.Considering that the Mooney model can not characterize the mechanical properties of rubber materials at large deformation stage, the Mooney model is analyzed by using the uniaxial tensile test data and the Treloar experimental data of styrene-butadiene rubber.The relationship between carbon black volume fraction and Mooney model was discussed, and the prediction ability of Mooney model for complex deformation of rubber material, such as pure shear and equal ratio biaxial tension, was discussed.The influence of two material parameters on Mooney model is also analyzed.Finally, a modified term with principal elongation ratio as variable is added to the Mooney model, and the improved Mooney model satisfies the six basic assumptions of Treloar and Ogden.By comparing with the experimental data, the improved Mooney model can well describe the stress-strain relationship of rubber materials in large deformation stage, and improve the prediction ability of complex deformation such as pure shear and isobaric biaxial tension of rubber materials.
【作者單位】： 福州大學(xué)機械工程及自動化學(xué)院;福建農(nóng)林大學(xué)機電工程學(xué)院;
【基金】：國家自然科學(xué)基金項目(11372074) 福建省教育廳科技項目(JA15174)資助
【分類號】：O341

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本文編號：1707322