A thermodynamically consistent tensorial framework for strain induced damage and its application to the modeling of metal forming processes

应变诱导损伤的热力学一致张量框架及其在金属成形过程建模中的应用

• 批准号: 183114468
• 负责人: Professor Dr. Wolfgang H. Müller
• 金额: --
• 依托单位: Fachgebiet Kontinuumsmechanik und Materialtheorie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/183114468?language=en
• 关键词: thermodynamically; consistent; tensorial; framework; strain

The main objective of the project prolongation is the modeling of metal forming processes coupled with the prediction of strain-induced damage. The implementation of the project comprises the solution of the following research problems: experimental study and modeling of damage in multistage forming processes accompanied with intermittent healing operations via heat treatment; modeling of non-steady-state forming processes coupled with a prediction of strain-induced damage for variable values of stress triaxiality and Lode angle with the use of systematized experimental data both from own and external works. A thermodynamically consistent tensorial framework for strain-induced damage developed in frames of the project, the performed experiments and numerical modeling as well as the results recently published both by the applicant and by other authors will provide a sound scientific basis for achievement of the project objectives. A solution of the scheduled research problems will enhance the theoretical and methodological background of ductile damage mechanics and will extend its application-oriented possibilities to relevant engineering and processing issues in metal forming industry. The project results will be applied to the development of advanced forming processes.

项目延长的主要目标是金属成形过程的建模以及应变损伤的预测。项目的实施包括解决以下研究问题：通过热处理对多阶段成形过程中伴随间歇愈合操作的损伤进行实验研究和建模；利用系统的国内外实验数据，对非稳态成形过程进行了建模，并对应力三轴性和Lode角变值下的应变损伤进行了预测。在项目框架中建立一个热动力学一致的应变损伤张拉框架，进行的实验和数值模拟以及申请人和其他作者最近发表的结果将为实现项目目标提供良好的科学基础。预定研究问题的解决将增强韧性损伤力学的理论和方法背景，并将其应用于金属成形工业的相关工程和加工问题。项目成果将应用于先进成形工艺的开发。

项目成果

Strain-induced damage of metals under large plastic deformation: Theoretical framework and experiments

• DOI: 10.1016/j.ijplas.2014.03.011
• 发表时间: 2014-08
• 期刊: International Journal of Plasticity
• 影响因子: 9.8
• 作者: N. Tutyshkin;W. Müller;R. Wille;M. Zapara