本文選題：相場(chǎng)　切入點(diǎn)：脆性斷裂　出處：《防災(zāi)減災(zāi)工程學(xué)報(bào)》2017年04期

【摘要】：介紹一種脆性斷裂的連續(xù)介質(zhì)相場(chǎng)模型的開(kāi)發(fā)。相場(chǎng)模型使用一種連續(xù)的擴(kuò)散式拓?fù)浣Y(jié)構(gòu)來(lái)處理離散的低維裂紋界面處的不連續(xù)性。使用整體耦合的Newton-Raphson迭代增量求解策略對(duì)方程系統(tǒng)進(jìn)行數(shù)值處理,并通過(guò)一種用于科學(xué)研究的開(kāi)源有限元軟件OpenGeoSys實(shí)現(xiàn)。在線(xiàn)彈性小變形框架下提供詳細(xì)的相場(chǎng)模型控制方程推導(dǎo),以及基于多孔介質(zhì)理論的熱流固耦合相場(chǎng)模型控制方程。此外,提供了用于模型驗(yàn)證的算例,探討模型應(yīng)用的前景。
[Abstract]:This paper introduces the development of a phase field model for brittle fracture continuum medium. The phase field model uses a continuous diffusion topology to deal with the discontinuity at the discrete low-dimensional crack interface. The integral coupled Newton-Raphson iterative increment is used. The solution strategy carries on the numerical treatment to the equation system, It is realized by an open source finite element software OpenGeoSys for scientific research. The detailed derivation of phase field model control equation is provided under the framework of small elastic deformation on line, and the thermal fluid-solid coupling phase field model control equation based on porous media theory is also provided. An example for model verification is provided and the prospect of model application is discussed.
【作者單位】： 亥姆霍茲環(huán)境研究中心-UFZ環(huán)境信息系;德累斯頓工業(yè)大學(xué)環(huán)境科學(xué)系;重慶大學(xué)土木工程學(xué)院;重慶大學(xué)山地城鎮(zhèn)建設(shè)與新技術(shù)教育部重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51608072)資助
【分類(lèi)號(hào)】：P642
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本文編號(hào)：1694623