Efficient Meshless Methods for Unsteady Lubricated Metal Forming Processes

适用于非稳态润滑金属成型工艺的高效无网格方法

• 批准号: 9713842
• 负责人: Jiun-Shyan Chen
• 金额: $ 25万
• 依托单位: University of Iowa
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-09-15 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9713842&HistoricalAwards=false
• 关键词: Efficient; Meshless; Methods; Unsteady; Lubricated

9713842 Chen Computer simulation methods for unsteady lubricated metal forming processes are being developed using meshless methods of analysis. Meshless methods allow the domain of the workpiece to be modeled without using a structured mesh thus avoiding mesh distortion difficulties that occur during the course of large plastic deformation. The behavior of the lubricated interface, including the effects of lubricant flow, pressure gradient, film thickness, and surface roughness, are included in the simulation procedures through the implementation of a hydrodynamic unsteady lubrication model into the meshless formulation. Special emphasis is placed on the development of computationally efficient meshless formulations to allow for large scale simulation of metal forming processes. ***

9713842 Chen非稳态润滑金属成形过程的计算机模拟方法正在使用无网格分析方法进行开发。 无网格方法允许在不使用结构化网格的情况下对工件的域进行建模，从而避免了在大塑性变形过程中发生的网格失真困难。润滑界面的行为，包括润滑剂流动的影响， 压力梯度、薄膜厚度，以及 表面粗糙度，包括在模拟过程中，通过实施流体动力学非稳态润滑模型到无网格制剂。特别强调的是放在计算效率的无网格配方的发展，允许大规模的金属成形过程的模拟。 ***