Strategic Manufacturing Initiative: Computer-Integrated Analysis of Deformation Processing

研究的总体目标是提高材料变形过程计算机集成分析的科学基础。该研究包括四个主要方面：(1)对多晶金属进行物理和计算大变形实验，以建立唯象本构方程，该方程反映了由于晶体织构而导致的力学各向异性随变形的演化；(2)将进行物理实验，以建立和评价改进的状态变量类型的刀具/工件界面摩擦和换热特性的连续介质表示：(3)开发热力耦合有限元计算程序，其中包括增强的工件和界面本构方程；以及(4)将进行实验室规模的变形处理操作，并将其与数值模拟进行关键比较，以评估本构方程和计算程序的预测能力。这项研究代表着来自学术界的研究人员的合作，该公司是一家致力于变形过程的计算机集成模拟的材料公司，也是一家高级固体力学软件应用程序的开发商。

The overall goal of the research is to improve the scientific basis for computer-integrated analysis of the deformation processing of materials. The research consists of four major thrusts: (1) physical and computational large deformation experiments will be conducted on polycrystalline metals in order to formulate phenomenological constitutive equations which capture the evolution, with increasing deformation, of mechanical anisotropy due to crystallographic texturing; (2) physical experiments will be conducted in order to formulate and evaluate improved state-variable type continuum representation of frictional and heat transfer characteristics at the tool/workpiece interface; (3) coupled thermo-mechanical finite element computational procedures will be developed which incorporate the enhanced workpiece and interface constitute equations; and (4) laboratory- scale deformation processing operations will be conducted, instrumented, and critically compared with numerical simulations in order to assess the predictive capabilities of the constitutive equations and computational procedures. The research represents a collaboration of investigators from academia, a materials company committed to computer-integrated simulation of deformation processing, and a developer of advanced solid mechanics software applications.