Engineering Research Equipment Grant: High Performance LoadFrame for Deformation Processes Research

与锻造、挤压和轧制等基本变形工艺相关的实验数据严重不足。缺乏适当的数据一直是理解与成形相关的基本力学和材料科学取得进展的主要障碍。资金将用于购买定制的、特殊性能的承载框架，以装备变形过程实验室。机架上的液压系统可以同时提供大载荷和高排量。这种能力并不存在于大多数载荷框架上，但对于获得工业成形过程中典型的应力和应变率区域是必需的。加载框架将用于各种成形实验，以支持目标，以更好地了解变形过程，并为此类过程开发准确的模拟方法。这项研究强调紧密耦合的实验和模型开发，使用专门为隔离特定物理现象而设计的独特实验。这些数据激发了形成模型的结构，并为评估建模假设提供了基础。变形工艺实验室将是一个通用设施，适用于研究广泛的变形工艺，评估工件材料的本构模型参数，并进行模具设计案例研究。

There exists a severe shortage of experimental data pertinent to basic deformation processes such as forging, extrusion, and rolling. The lack of appropriate data has been a major obstacle to progress in understanding the fundamental mechanics and materials science associated with forming. Funds will be used to purchase a custom-built, special performance load frame to equip the deformation processes laboratory. The hydraulic system on the frame can deliver large loads and high displacement rates simultaneously. Such capabilities do not exist on the large majority of load frames but are needed to access the regimes of stress and strain rate typical of industrial forming processes. The load frame will be used for a variety of forming experiments in support of the goals to better understand deformation processes and to develop accurate simulation methods for such processes. The research emphasizes tightly coupled experimentation and model development using unique experiments that are designed especially to isolate particular physical phenomena. Such data motivate the structure of forming models and provide the bases to assess modeling assumptions. The deformation process laboratory will be a general purpose facility suitable for studying a wide range of deformation processes, evaluating constitutive model parameters of workpiece materials, and performing tooling design case studies.