Mechanical interactions of micrometer-sized particles based on calibrated contact models
基于校准接触模型的微米级颗粒的机械相互作用
基本信息
- 批准号:170280493
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Priority Programmes
- 财政年份:2010
- 资助国家:德国
- 起止时间:2009-12-31 至 2017-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Research and modelling of the contact behaviour between individual particles was the main objective in the first two working periods. In the final period of PiKo, the focus will be on the comparison between bulk experiments and experimentally calibrated DEM simulations using single particle interaction models. A cooperation between the research groups Dr. Zetzener (iPAT, Braunschweig) and Dr. Auernhammer (MPI for Polymer Research, Mainz) will be installed. Also a scientific exchange with Prof. Guido Grundmeier, Prof. Hans-Joachim Schmid (University of Paderborn) and Prof. Volker Schmidt (University of Ulm) is intended. Data gathered using available measurement equipment (X Ray micro-tomography, Braunschweig; confocal laser scanning microscope, Mainz) and new measuring tools (mixer model, Birkenfeld) will be shared between all groups. These experiments will be run using TiO2 agglomerates (Source: PiKo service project and Paderborn) and Maltodextrin. Based on common analysing tools from Mainz, Birkenfeld, Braunschweig and Ulm, the experimental data will be compared with DEM-simulations developed by TUHH. Due to this network of working groups, a more profound scientific understanding of interparticulate contacts in bulk materials will be achieved. Objective of this research is to use experimentally determined particle trajectories of irregularly shaped particles within bulk solids to validate simulations with highest accuracy. The interaction of particles under small normal forces will be measured and described based on the knowledge of the first periods. These interactions will be examined in a new experimental set-up, which will be realised in Birkenfeld in order to allow 3D measurement of mixing processes using X-Ray micro-tomography. As well as for DEM simulations these data will be used for validation purposes. Experiments related to the bulk behaviour with different modes of loading will also be carried out by Dr. Zetzener, iPAT and Dr.S. Aman, OVGU, resulting in experimentally determined material properties. DEM simulations based on these material properties will generate speed, force and contact distributions in combination with particle trajectories of individual particles. Additionally the stress on equipment walls and tools resulting from the bulk contact will be considered. Supporting DEM/FEM-simulations of collisions involving irregularly shaped particles will be carried out. The shape of these particles will be gathered by X-Ray micro-tomography (IMiP, iPAT). The collisions themselves will be analysed by high-speed cameras (TUHH). As a result the effect of particle morphology on contact properties can be studied. Also the DEM-software MUSEN will be further developed and enhanced by installing new software modules (indentation test, compression test, angle of repose), the implementation of multi-sphere-methods and the modelling of interparticulate binding forces in agglomerates.
研究和模拟单个颗粒之间的接触行为是前两个工作阶段的主要目标。在PICO的最后阶段,重点将放在整体实验和使用单粒子相互作用模型进行实验校准的DEM模拟之间的比较。泽泽纳博士(IPAT,布伦斯韦格)和奥恩哈默博士(美因茨,聚合物研究MPI)之间的合作将被安装。还打算与Guido Grundmeier教授、Hans-Joachim Schmidd教授(帕德伯恩大学)和Volker Schmidt教授(乌尔姆大学)进行科学交流。所有小组将共享使用现有测量设备(X射线显微断层摄影术,Braunschweig;共聚焦激光扫描显微镜,美因茨)和新测量工具(混合器模型,Birkenfeld)收集的数据。这些实验将使用二氧化钛凝聚体(来源:Piko Service Project和Paderborn)和麦芽糊精进行。基于Mainz、Birkenfeld、Braunschweig和Ulm的常用分析工具,实验数据将与TUHH开发的DEM模拟进行比较。由于这个工作组网络,将实现对散装材料中颗粒间接触的更深刻的科学理解。这项研究的目的是使用实验确定的散装固体中不规则形状颗粒的颗粒轨迹来验证具有最高精度的模拟。粒子在小法向力作用下的相互作用将根据第一阶段的知识进行测量和描述。这些相互作用将在一个新的实验装置中进行研究,该装置将在比肯菲尔德实现,以便使用X射线微层析成像技术对混合过程进行3D测量。除了用于DEM模拟之外,这些数据还将用于验证目的。IPAT的Zetzener博士和OvGU的S.Aman博士也将进行与不同加载模式下的块体行为相关的实验,从而得出实验确定的材料特性。基于这些材料属性的DEM模拟将生成速度、力和接触分布,并结合单个粒子的粒子轨迹。此外,还将考虑大量接触对设备、墙壁和工具造成的应力。支持DEM/有限元-将对不规则形状粒子的碰撞进行模拟。这些颗粒的形状将由X射线微层析成像(IMiP,IPAT)收集。碰撞本身将由高速摄像机(TUHH)进行分析。因此,可以研究颗粒形态对接触性能的影响。此外,还将通过安装新的软件模块(压痕测试、压缩测试、休止角)、实施多球体方法和模拟凝聚体中的颗粒间结合力,进一步开发和增强数字高程模型软件Musen。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Professor Dr.-Ing. Ulrich Bröckel其他文献
Professor Dr.-Ing. Ulrich Bröckel的其他文献
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{{ truncateString('Professor Dr.-Ing. Ulrich Bröckel', 18)}}的其他基金
Multidimensional fractionation of suspended particles by use and modification of wetting properties / selective agglomeration
通过使用和修改润湿特性/选择性团聚对悬浮颗粒进行多维分级
- 批准号:
381630096 - 财政年份:2017
- 资助金额:
-- - 项目类别:
Priority Programmes
Research on the description and modification of the wetting phase during shape-selective agglomeration in suspensions.
悬浮液中择形团聚过程中润湿相的描述和修饰研究。
- 批准号:
467028815 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
Selective Agglomeration of Engineered Artificial Minerals (EnAM) in a Suspension of Comminuted Slag
工程人造矿物 (EnAM) 在粉碎矿渣悬浮液中的选择性团聚
- 批准号:
470538422 - 财政年份:
- 资助金额:
-- - 项目类别:
Priority Programmes
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