Finite Strain with large rotations: A new hybrid numerical/experimental approach

大旋转有限应变：一种新的混合数值/实验方法

• 批准号: DP140103015
• 负责人: Prof Klaus Regenauer-Lieb
• 金额: $ 10.35万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-09-25 至 2019-08-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140103015
• 关键词: Finite; Strain; large; rotations; new

Deformation up to large strains and rotations is important in rocks, metals, polymers, and biomaterials. Computational mechanics is a standard tool for modelling such deformations. However, in earth sciences, mechanical theories use small-strain formulations or large-strain approaches with classical stress rates. Classical stress rates can lead to incorrect stored energies. This project proposes to test a new large-strain theory tailored to rocks experimentally, and to apply it to a pivotal geological problem: shear zone formation. The project will advance our fundamental understanding of the mechanics and energetics of rock deformation and provide a novel tool for the modelling of large deformations.

在岩石、金属、聚合物和生物材料中，高达大应变和旋转的变形是重要的。计算力学是模拟这种变形的标准工具。然而，在地球科学中，力学理论使用小应变公式或经典应力率的大应变方法。经典的应力率会导致不正确的储能。本计画提出以实验方式检验一种新的岩石大应变理论，并将其应用于一个关键的地质问题：剪切带的形成。该项目将推进我们对岩石变形力学和能量学的基本理解，并为大变形建模提供一种新的工具。