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.

除了进行不同年龄的热力实验外，该项目的一个主要目标是开发一个锌压铸合金的本构模型，考虑到不同年龄的速度和温度依赖的实验。这些现象和薄壁零件的厚度依赖关系将被模拟。本构模型的参数将通过在不同温度和年龄的不同加载条件下进行的拉伸、压缩和扭转的所有实验来确定。此外，将本构模型应用到有限元程序中。用时间自适应高阶时间积分格式求解了基于线性动量平衡有限元空间离散的微分-代数方程组、热方程和反映厚度相关的偏微分方程组。对边界层效应和不同的时间尺度也进行了数值研究。

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