High-Fidelity Modeling and Optimization of Multi-Functional Lightweight Marine Structures
Abstract
Statement of WorkThe technical objective of this work is to develop an efficient, high-fidelity, Multi-DisciplinaryOptimization (MDO) tool for modeling and optimization of multi-functional lightweight marinestructures to (1) improve the hydrodynamic and structural performance over a wide range ofoperating conditions, (2) enable in situ health monitoring and damage prognosis, and (3)minimize dynamic load fluctuations and flow-induced vibrations. The approach is to develop andvalidate an efficient, high-fidelity, MDO tool to predict the coupled systems response and tointelligently integrate and optimize the three-dimensional (3-D) geometry and materialconfigurations of the lightweight marine structure, as well as the placement of the embeddedsensors and actuators, to ensure optimal system performance, stability, and reliability across awide range of operating conditions. The specific tasks and timeline of this 4-year effort include:~ 5/31/16-9/30/16 (Period 1): Extend and validate the solver to simulate the materialconstitutive behavior and failure mechanisms of lightweight marine structures.~ 10/1/16-9/30/17 (Period 2): Extend and validate the solver to optimize the 3-D geometryand material configuration of lightweight marine structure to optimize the hydrodynamicand structural performance across a wide range of operating conditions.~ 10/1/17-9/30/18 (Period 3): Extend and validate the solver to consider the dynamicperformance of the lightweight marine structure to minimize dynamic load fluctuationsand flow-induced vibrations, and avoid instability issues such as resonance, frequencycoalescence, lock-in, and flutter.~ 10/1/18-9/30/19 (Period 4): Extend and validate the solver to simulate the transientresponse of the embedded sensors, and to infer based on the sensor data the structuralhealth conditions.~ 10/1/19-4/30/20 (Period 5): Investigate the optimal placement of the sensors andactuators for structural health monitoring and to actively/passively control of structuralvibrations.The proposed research effort will help the US Navy to achieve its vision to develop agile, fuelefficient,advanced, high-performance platforms by (1) improving the fundamentalunderstanding of the hydrodynamic and structural performance of multi-functional lightweightmarine structures, and (2) providing a robust and efficient high-fidelity MDO tool for advanced,multi-functional naval platforms capable of operating effectively, efficiently, and safely across awide range of operating conditions.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 30, 2016
- Source ID
- N000141612972
Entities
People
- Yin Lu Young
Organizations
- Board of Regents of the University of Michigan
- Office of Naval Research
- United States Navy