µ-Kern: Microstructure based calculation method for the technological properties of inorganically bound sand cores.

µ-Kern：基于微观结构的无机粘结砂芯技术性能的计算方法。

• 批准号: 280815704
• 负责人: Privatdozent Dr. Heiko Andrä
• 金额: --
• 依托单位: Fraunhofer-Institut für Techno- und Wirtschaftsmathematik (ITWM)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/280815704?language=en
• 关键词: Kern; Microstructure; based; calculation; method

Motivated by environmental protection laws and the global goal of an eco-friendly production, inorganically bonded sand cores are being used more and more often by light metal foundries around the world. These cores consists of natural quartz sand, which is bonded by silicate binders. Their technological properties mechanical strength, permeability, thermal conductivity and heat capacity are critical for the casting quality. The effect of sand and binder characteristics on these technological properties have merely been described by heuristic methods until now. The aim of this project is to develop and validate a computational method, which determines the technological properties of inorganically bonded sand cores based on the constituents' properties. The numerical method is based on a three-dimensional model of the material's microstructure.

受环境保护法和环保生产的全球目标的推动，世界各地的轻金属铸造厂越来越多地使用无机粘结砂芯。这些岩心由天然石英砂组成，由硅酸盐粘合剂粘合。它们的工艺性能、机械强度、透气性、导热性和热容对铸件质量至关重要。砂和粘结剂特性对这些工艺性能的影响迄今为止仅用启发式方法描述过。本计画的目的是发展并验证一种计算方法，根据无机结合砂芯组份的性质来决定无机结合砂芯的工艺性质。数值方法是基于材料的微观结构的三维模型。

项目成果

An FFT-based fast gradient method for elastic and inelastic unit cell homogenization problems

• DOI: 10.1016/j.cma.2016.11.004
• 发表时间: 2017-03
• 期刊: Computer Methods in Applied Mechanics and Engineering
• 影响因子: 7.2
• 作者: M. Schneider

Detection of Core Fracture in Inorganically Bound Cast-in Sand Cores by Acoustic Microphony

• DOI: 10.1007/978-3-030-03451-1_4
• 发表时间: 2018-11
• 期刊: Advances in Production Research
• 作者: Florian Ettemeyer;F. Steinlehner;Philipp Lechner;W. Volk;D. Günther

Modelling the microstructure and computing effective elastic properties of sand core materials

• DOI: 10.1016/j.ijsolstr.2018.02.008
• 发表时间: 2018-06-15
• 期刊: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
• 影响因子: 3.6
• 作者: Schneider, Matti;Hofmann, Tobias;Steeb, Holger
• 通讯作者: Steeb, Holger