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

9310480 Park我们建议开展一项跨学科研究计划，以解决大规模驱动结构（MAS）设计优化方法开发中的建模和计算问题。这些问题包括：利用耦合场划分和子域分解方法高效分析大规模并行机器上的控制-结构相互作用；并行计算性能指标及其灵敏度导数，供优化器使用；并提出了一种新的搜索方法，以最大化有关致动器位置和控制增益的性能指标。这些技术将应用于两个具体问题：阻止跨声速-高超声速机翼的气动弹性振荡，其形状可以通过嵌入式压电装置控制，以及在一系列推进制度下嵌入低功率和高功率致动器的涡轮叶片的性能优化。

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.