本文選題：植物纖維發(fā)泡材料 + 粘彈塑性��； 參考：《包裝工程》2017年21期

【摘要】：目的研究某植物纖維發(fā)泡材料的力學(xué)性能,建立粘彈塑性力學(xué)模型。方法用萬能材料試驗(yàn)機(jī)進(jìn)行靜態(tài)壓縮實(shí)驗(yàn),得到該植物纖維發(fā)泡材料的應(yīng)力-應(yīng)變曲線,并建立其力學(xué)模型,用SPSS軟件對實(shí)驗(yàn)數(shù)據(jù)回歸分析和參數(shù)識(shí)別,最后對比分析模型曲線與實(shí)驗(yàn)數(shù)據(jù)的吻合度。結(jié)果該植物纖維發(fā)泡材料變形有3個(gè)階段,即彈性階段、粘塑性階段和壓潰階段。該植物纖維發(fā)泡材料的粘彈塑性模型可由1個(gè)線性彈簧元件、1個(gè)非線性彈簧元件、1個(gè)粘性元件和1個(gè)塑性元件組合而成。在彈性階段,該植物纖維發(fā)泡材料的彈性模量參數(shù)為5.873 MPa;在粘塑性階段,該植物纖維發(fā)泡材料的力學(xué)模型可用三次函數(shù)來表示,三次項(xiàng)、二次項(xiàng)、一次項(xiàng)和常數(shù)項(xiàng)的參數(shù)分別為9.155,-9.1,3.608,0.136。結(jié)論該植物纖維發(fā)泡材料是一種粘彈塑性材料,其理論模型可用三次函數(shù)表示,實(shí)驗(yàn)數(shù)據(jù)與理論模型吻合度高。
[Abstract]:Objective to study the mechanical properties of a plant fiber foaming material and to establish a viscoelastic plastic mechanical model. Methods the stress-strain curve of the plant fiber foamed material was obtained by static compression experiment with universal material testing machine, and its mechanical model was established. The regression analysis and parameter identification of the experimental data were carried out by SPSS software. Finally, the consistency between the model curve and the experimental data is analyzed. Results there are three stages in the deformation of the foamed material: elastic stage, viscoplastic stage and crushing stage. The viscoelastic-plastic model of the plant fiber foaming material can be composed of one linear spring element, one nonlinear spring element, one viscous element and one plastic element. In the elastic stage, the elastic modulus parameter of the foamed material is 5.873 MPA, and in the viscoplastic stage, the mechanical model of the foamed material can be expressed by cubic function, cubic term, quadratic term, The parameters of the first term and the constant term are 9.155- 9.1g ~ 3.608 ~ 0.136, respectively. Conclusion the plant fiber foamed material is a viscoelastic-plastic material, its theoretical model can be expressed by cubic function, and the experimental data are in good agreement with the theoretical model.
【作者單位】： 重慶工商大學(xué)制造裝備機(jī)構(gòu)設(shè)計(jì)與控制重慶市重點(diǎn)實(shí)驗(yàn)室;重慶工商大學(xué)數(shù)學(xué)與統(tǒng)計(jì)學(xué)院;
【基金】：重慶市教育委員會(huì)科學(xué)技術(shù)研究項(xiàng)目(KJ120707)
【分類號(hào)】：TB484

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