Mechanics of Glassy Polymers During Solid-Phase Processing

玻璃状聚合物在大规模变形过程中的行为将通过实验和分析进行研究。目标是开发可用于这些材料加工的本构方程，特别是用于预测力要求和材料行为，例如非均匀变形（裂纹和剪切带）和回弹。该模型将通过冷拔过程的数值模拟进行测试和验证。研究结果将提高对这些“工程”聚合物对热机械刺激反应的现象学和预测的理解，并将影响这些材料冷成型的重要技术领域。

The behavior of glassy polymers during large-scale deformation will be studied experimentally and analytically. The goal is to develop constitutive equations that can be useful for processing of these materials, especially for predicting force requirements and material behavior, such as non-homogenous deformation (crazing and shear bands) and spring back. The model will be tested and validated with numerical simulation of the cold drawing process. The results will improve the understanding of the phenomenology and the prediction of the response of these "engineered" polymers to thermomechanical stimuli and should impact the technologically important area of cold forming of these materials.