本文選題：顆粒增強(qiáng)復(fù)合材料　切入點(diǎn)：Voronoi單元有限元法　出處：《重慶大學(xué)學(xué)報(bào)》2016年05期

【摘要】：Voronoi單元有限元法在計(jì)算多相復(fù)合材料時(shí)比普通位移有限元法效率高,并且能夠反映夾雜分布的隨機(jī)性。用考慮界面脫層的Voronoi單元有限元法對代表性體積單元進(jìn)行模擬得到應(yīng)力場,再用直接均勻化方法進(jìn)行平均,得到能夠反映界面脫層對材料有效性能影響的平均應(yīng)力—應(yīng)變曲線和有效彈性模量。利用編寫的可以對含任意夾雜代表性體積單元進(jìn)行大規(guī)模計(jì)算的程序,對多個(gè)模型進(jìn)行了數(shù)值模擬,分析了夾雜的形狀、體積分?jǐn)?shù)、空間分布等因素對材料有效彈性模量的影響,結(jié)果表明:具有較大有效彈性模量的模型一般在界面處有較大的應(yīng)力集中,在加載過程中較早發(fā)生界面脫層。
[Abstract]:Voronoi element finite element method is more efficient than conventional displacement finite element method in calculating multiphase composite materials. Voronoi element finite element method considering interface delamination is used to simulate the stress field of the representative volumetric element, and then the direct homogenization method is used to average the stress field. The average stress-strain curve and effective elastic modulus, which can reflect the effect of interfacial delamination on the effective energy of the material, are obtained. The program can be used to calculate the representative volume element containing arbitrary inclusions on a large scale. Several models are numerically simulated, and the influence of the shape, volume fraction and space distribution of inclusions on the effective elastic modulus of the material is analyzed. The results show that the models with large effective modulus of elasticity generally have greater stress concentration at the interface, and the interfacial delamination occurs earlier in the loading process.
【作者單位】： 昆明理工大學(xué)建筑工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(KKGD201206020,KKGA201506009)~~
【分類號】：TB33

【相似文獻(xiàn)】

相關(guān)期刊論文 前1條

1 魏高峰;馮偉;高洪芬;;基于位移插值的Voronoi單元有限元方法[J];應(yīng)用力學(xué)學(xué)報(bào);2008年02期

相關(guān)碩士學(xué)位論文 前2條

1 張文燕;模擬顆粒增強(qiáng)復(fù)合材料疲勞裂紋擴(kuò)展的Voronoi單元法[D];昆明理工大學(xué);2011年

2 臺雪琰;不規(guī)則度對二維隨機(jī)Voronoi微米及納米級蜂窩模型彈性性能的影響[D];合肥工業(yè)大學(xué);2012年

，

本文編號：1659663