Presidential Young Investigator Award: Deformation Processing of Materials

本研究将集中于理解和模拟控制聚合物有限应变、多轴变形的基本机制。本研究开发的基于物理的本构模型将与非线性有限元方法结合使用，以实现热-机械耦合变形过程的数值模拟。模拟计算材料状态随加工参数（如应变、变形速率和温度）的演变，可用于制造具有特定性能的产品，并定义实现这些性能的有效路径。此外，闭环控制的潜力，以进一步提高加工将被研究，其中材料状态的当前信息（如应力，应变，温度，强度，取向）将被用作反馈参数，以确定在数值模拟中剩余的加工路径。

This research will focus on understanding and modelling the fundamental mechanisms governing the finite strain, multiaxial deformation of polymers. Physically-based constitutive models developed in this research will be used in conjunction with the nonlinear finite element method to enable the numerical simulation of thermo-mechanically coupled deformation processing. Simulations which compute the evolution of material state with processing parameters such as straining, deformation rate and temperature can be used to manufacture products with specially tailored properties and to define efficient paths to achieve those properties. Furthermore, the potential of closed-loop control to further enhance processing will be investigated where current information of material state (e.g. stress, strain, temperature, strength, orientation) will be used as feedback parameters to determine the remaining processing path in numerical simulations.