Investigation of crack propagation within solid structures exposed to dynamic loading and impact using the truss-like discrete element method

使用类桁架离散元法研究承受动态载荷和冲击的固体结构内的裂纹扩展

• 批准号: 1941431
• 金额: --
• 依托单位: University of Edinburgh
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1941431
• 关键词: Investigation; crack; propagation; within; solid

Understanding how fractures and cracks develop in materials is crucial to many disciplines, e.g. aerospace engineering, materials sciences, structural engineering and geophysics. Fast and accurate computer simulation of crack propagation within realistic 3D structures would be a valuable tool to allow engineers to explore the fracture process in greater detail and yield a greater understanding of the factors that lead to the demise of a structure.This research aims to create a new program that utilizes the truss-like Discrete Element Model (DEM) method to investigate this problem further. The program will discretize structures imported from a CAD model into an array of 2D elements that allow the user to create desired loading scenarios. It is a cutting-edge approach that aims to reduce the computational resource required by the conventional Finite Element Analysis (FEA) method. The performance of the program will be compared with an identical FEA model and aim to be validated against an equivalent experiment.

了解材料中的断裂和裂纹如何发展对许多学科至关重要，例如航空航天工程，材料科学，结构工程和物理学。快速而准确的计算机模拟真实三维结构中的裂纹扩展将是一个有价值的工具，让工程师更详细地探索断裂过程，并产生一个更好的理解的因素，导致deems.This研究的目的是创建一个新的程序，利用桁架样离散元模型（DEM）的方法来进一步研究这个问题。该程序将从CAD模型导入的结构离散化为2D元素阵列，允许用户创建所需的加载场景。它是一种尖端的方法，旨在减少传统有限元分析（FEA）方法所需的计算资源。该程序的性能将与相同的FEA模型进行比较，并旨在根据等效实验进行验证。

项目成果

State of the Art and Future Trends in Material Modelling

材料建模的最新技术和未来趋势

• 发表时间: 2019
• 作者: Teixeira-Dias F