Research Initiation: Modeling of Surface Roughening

研究启动：表面粗糙化建模

• 批准号: 9410127
• 负责人: Timothy Dewhurst
• 金额: $ 7.11万
• 依托单位: University of Maine
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-07-15 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9410127&HistoricalAwards=false
• 关键词: Research; Initiation; Modeling; Surface; Roughening

9410127 Dewhurst The award is for research involving the addition of polycrystal slip modeling capabilities to a three-dimensional finite element code to predict the effects of surface roughening during bulk material deformation. The work extends current work on the prediction of microstructural texture and anisotropic material properties during bulk deformation and relates surface roughening to individual grains on the free surface. Individual grains are modeled by individual elements of the mesh. A combined experimental and numerical simulation approach is taken to validate the techniques developed, and the sensitivity of the surface roughness to process parameters is investigated. Metalforming industries such as the automotive industry and the beverage can industry rely on sheet forming processes where surface roughening is a problem. Improved understanding of the phenomenon of surface roughening is likely to result from the work described here and would benefit these industries.

小行星9410127 该奖项是为研究涉及增加多晶滑移建模能力的三维有限元代码，以预测表面粗糙化的影响，在散装材料变形。 这项工作扩展了目前的工作预测的微观结构纹理和各向异性材料的性能在体变形和表面粗糙化的自由表面上的单个晶粒。 单个颗粒由网格的单个元素建模。 采用实验和数值模拟相结合的方法来验证所开发的技术，并研究了表面粗糙度对工艺参数的敏感性。 诸如汽车工业和饮料罐工业的金属成形工业依赖于板成形工艺，其中表面粗糙化是一个问题。 提高对表面粗糙化现象的理解可能会导致这里所描述的工作，并将有利于这些行业。