能源地下储存中地质材料开裂过程的相场模型与验证分析
发布时间:2018-04-01 07:53
本文选题:相场 切入点:脆性断裂 出处:《防灾减灾工程学报》2017年04期
【摘要】:介绍一种脆性断裂的连续介质相场模型的开发。相场模型使用一种连续的扩散式拓扑结构来处理离散的低维裂纹界面处的不连续性。使用整体耦合的Newton-Raphson迭代增量求解策略对方程系统进行数值处理,并通过一种用于科学研究的开源有限元软件OpenGeoSys实现。在线弹性小变形框架下提供详细的相场模型控制方程推导,以及基于多孔介质理论的热流固耦合相场模型控制方程。此外,提供了用于模型验证的算例,探讨模型应用的前景。
[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.
【作者单位】: 亥姆霍兹环境研究中心-UFZ环境信息系;德累斯顿工业大学环境科学系;重庆大学土木工程学院;重庆大学山地城镇建设与新技术教育部重点实验室;
【基金】:国家自然科学基金项目(51608072)资助
【分类号】:P642
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本文编号:1694623
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