Experiments, modeling and computation of the temperature, age and size-dependent behavior of zinc die-cast materials

锌压铸材料的温度、寿命和尺寸相关行为的实验、建模和计算

• 批准号: 286792688
• 负责人: Professor Dr.-Ing. Stefan Hartmann
• 金额: --
• 依托单位: Institut für Technische Mechanik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/286792688?language=en
• 关键词: Experiments; modeling; computation; temperature; age

Apart from performing thermo-mechanical experiments at different ages, one major goal of the project is to develop a constitutive model for a zinc die-cast alloy taking experiments into account which show the rate- and temperature-dependence at different ages. These phenomena and the thickness-dependence of thin-walled parts will be modeled. The parameters of the constitutive model will be identified in all experiments performed at different loading conditions for tension, compression and torsion with varying temperatures and age. Furthermore, the constitutive model is implemented into a finite element program. The resulting system of differential-algebraic equations, which is based on the spatial discretization using finite elements of the balance of linear momentum, the heat equations and a partial differential equation that captures the thickness-dependence is solved using time-adaptive high-order time-integration schemes. Numerical investigations of the boundary layer effect and different time-scales are performed as well.

除了在不同年龄进行热机械实验外，该项目的一个主要目标是为锌模具铸造合金开发一个本构模型，以考虑实验，以显示不同年龄的速率和温度依赖性。这些现象和薄壁部分的厚度依赖性将被建模。本构模型的参数将在在不同的加载条件下进行的所有实验中确定，以进行张力，压缩和扭转，并具有不同的温度和年龄。此外，本构模型被实现为有限元程序。最终的差分晶格方程系统，该系统基于使用线性动量平衡，热方程和偏微分方程的有限元素基于空间离散化，该方程捕获了捕获厚度依赖性的偏微分方程 - 整合方案。还对边界层效应和不同的时间尺度进行了数值研究。

项目成果

Numerical modeling of the thickness dependence of zinc die-cast materials

锌压铸材料厚度依赖性的数值模拟

• DOI: 10.1007/s00466-017-1519-8
• 发表时间: 2018
• 期刊: Computational Mechanics
• 影响因子: 4.1
• 作者: Martinez Page;Hartmann
• 通讯作者: Hartmann

Influence of temperature and aging on the thermal diffusivity, thermal conductivity and heat capacity of a zinc die casting alloy

温度和时效对压铸锌合金热扩散率、导热率和热容的影响

• DOI: 10.1016/j.jallcom.2019.01.371
• 发表时间: 2019
• 期刊: Journal of Alloys and Compounds
• 影响因子: 6.2
• 作者: Martinez Page;Weidenfeller;Hartmann
• 通讯作者: Hartmann

Thermo-mechanical behavior of a zinc die casting alloy considering natural aging

考虑自然时效的锌压铸合金的热机械行为

• DOI: 10.21268/20191217-1
• 发表时间: 2019
• 作者: Martinez Page

Experimental characterization, material modeling, identification and finite element simulation of the thermo-mechanical behavior of a zinc die-casting alloy

• DOI: 10.1016/j.ijplas.2017.10.010
• 发表时间: 2018-02
• 期刊: International Journal of Plasticity
• 影响因子: 9.8
• 作者: M. A. Page;S. Hartmann