|
Energy Harvesting & Design Optimization Lab. |
||||||||||||||||
|
University
of Maryland Baltimore County, Dept. of Mechanical Engineering |
||||||||||||||||
|
|
||||||||||||||||
|
|
||||||||||||||||
|
|
||||||||||||||||
|
Current Topics
4. Aircraft System Design –
Stepwise approach for subsystem allocation and frame topology optimization:
The
proposed research aims at founding a design framework for aircraft subsystem
layout using design optimization methodologies. An aircraft system is very
complex with its various subsystems: control system (flight control, engine
control), fuel system, hydraulic system, and structural system. An advanced
systematic design approach is needed for effective packaging of multiple
subsystems while satisfying load-carrying performance and minimizing weight
for energy efficiency. The proposed design framework provides multiple Pareto
solutions by performing the consecutive two design steps: (i) subsystem allocation, and (ii) structural topology
optimization. In the first step the design problem to allocate each subsystem
is solved considering weight balance and subsystem proximity for the
improvement of system performances such as dynamic stability and operation
costs. Non-intuitive design results can be expected by adapting global
optimization algorithms such as genetic algorithm. Handling multiobjectives, multiple solutions can be obtained in
this step. Topology optimization for structural robustness is performed in
the second step for each solution found in the first step. The design
optimization for the determination of aircraft frame structures is formulated
as compliance minimization problem subject to volume constraint. The
subsystems layout found in the first step provide loading and boundary
conditions and no frame structure is placed in them. Additional constraint on
maintaining the weight balance is included and the corresponding design
sensitivity is formulated. The proposed design framework, the sequential
combination of subsystem layout design and frame structure design, will
provide innovative design insight for complex modern aircraft system. A
design case study for a commercial aircraft wing will be presented.
|
||||||||||||||||
|
|
||||||||||||||||
|
|
Energy Harvesting & Design Optimization
Lab. University of Maryland Baltimore County,
Dept. of Mechanical Engineering 1000 Hilltop Circle, Baltimore, MD, 21250 © 2013 |
|||||||||||||||
