Presidential Young Investigator Award: Mathematical Modeling of Continuous Casting Processing

总统青年研究员奖：连铸加工数学建模

• 批准号: 8957195
• 负责人: Brian Thomas
• 金额: $ 24.95万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-09-15 至 1995-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8957195&HistoricalAwards=false
• 关键词: Presidential; Young; Investigator; Award; Mathematical

The project work will develop applied mathematical models to simulate two-dimensional heat flow and stress development in a static-cast ingot using finite-element modeling of transient thermal-stress development in solidification. The intent is to continue the application of mathematical models, industrial experimentation, and metallurgical studies to increase understanding and solve problems in other metal casting processes. While still incomplete, these models have already helped to improve understanding of fluid flow from submerged nozzles, the distorted shape of a continuous slab casting mold, the mechanical behavior of steel at elevated temperatures, the problems in casting of high-quality steel, such as inclusion entrainment and shell thinning due to shell jet impingement on the solidifying steel shell, formation of surface shape defects in stainless steel slabs due to inadequate mold taper, and crack formation due to thermal stresses.

该项目将开发实用的数学模型，利用凝固过程中瞬时热应力发展的有限元模型来模拟静态铸造钢锭中的二维热流和应力发展。其目的是继续应用数学模型、工业实验和冶金研究，以增加对其他金属铸造工艺的理解和解决问题。虽然这些模型仍然不完整，但它们已经帮助人们更好地了解了浸没水口的流体流动、板坯连铸结晶器的变形形状、钢在高温下的力学行为、优质钢的浇注中存在的问题，如夹杂物夹带和由于贝壳射流冲击凝固钢壳而导致的壳层减薄，由于结晶器锥度不足而导致的不锈钢板坯表面形状缺陷的形成，以及由于热应力而形成的裂纹。