High Performance Computational Method for Analysis and Optimization of Massively Actuated Structures

9310480公园我们建议进行跨学科的研究计划，将解决建模和计算问题，干预大规模驱动结构（MAS）设计的优化方法的发展。 这些问题包括：通过耦合域划分和子域分解对大规模并行机器上的控制结构相互作用进行有效分析;并行计算性能指标及其灵敏度导数以供优化器使用;以及新颖的搜索方法，用于最大化关于致动器位置和控制增益的性能指标。这些技术将被应用到两个具体的问题：阻止跨音速-高超音速机翼的气动弹性振荡，其形状可以通过嵌入式压电装置来控制，以及在一系列推进状态下嵌入低和高权限致动器的涡轮机叶片的性能优化。

9310480 Park We propose to conduct an interdisciplinary research program that will address modeling and computational issues that intervene in the development of optimization methods for massively actuated structures(MAS) designs. These issues include: efficient analysis of control-structure interaction on massively parallel machines by coupled-field partitioning and subdomain decomposition; concurrent calculation of performance indices and their sensitivity derivatives for use by the optimizer; and, novel search methods for maximizing performance indices with respect to actuator location and control gains. The techniques will be applied to two specific problems: arresting aeroelastic oscillations of a transonic- hypersonic wing whose shape may be controlled through embedded piezoelectric devices, and performance optimization of a turbine blade with embedded with low and high-authority actuators over a range of propulsion regimes.