Advanced Multifunctional Lightweight Aerostructures

Dr. Kamran Behdinan, PEng., Professor, Advanced Research Laboratory for Multifunctional Lightweight Structures (ARL-MLS), Department of Mechanical and Industrial Engineering, University of Toronto, Canada. Dr. Rasool Moradi-Dastjerdi, Postdoctoral Fellow, Advanced Research Laboratory for Multifunctional Lightweight Structures (ARL-MLS), Department of Mechanical and Industrial Engineering, University of Toronto, Canada.

1 An overview

2 Multi-disciplinary modelling and characterization

Layer arrangement impact on the electromechanical performance of a five-layer multifunctional smart sandwich plate

• Introduction
• Modeling of the smart plate
• Porous layer
• Nanocomposite layers
• Governing
• Equations
• Mesh-free solution
• MLS shape function
• Discretization of domain
• Essential boundary conditions
• Numerical results
• Validation
• Static deflections of the smart plate
• Conclusions
• References

Heat transfer in advanced sandwich cylinders with graphene-reinforced nanocomposite faces

• Introduction
• Modeling of sandwich cylinders
• Dispersion of graphene sheets
• Thermal properties
• Governing thermal equations
• Mesh-free formulations
• Results and discussions
• Thermal conductivity of graphene/PE nanocomposite
  Verification
• Heat transfer response
• Conclusions
• References

Multiscale methods for lightweight structure and material characterization

• Introduction
• Overview of Multiscale methodologies and applications
• Concurrent methods
• Hierarchical methods
• Bridging Cell Method
• Formulation
• Applications
• Multiscale modeling of lightweight composites
• Nano to microscale: bridging cell method
• Micro to macroscale: cohesive zone modeling
• Conclusion
• References

Characterization of Ultra-High Temperature and Polymorphic Ceramics

• Introduction
• Crystalline Characterization of Ultra-High Temperature Ceramics
• Chemical Characterization of a UHTC Composite
• Polymeric Ceramic Crystalline Characterization
• Multiscale Characterization of Anatase-Rutile Transformation
• Conclusion
• References

Dynamic Modeling and Analysis of Nonlinear Flexible Rotors Supported by Viscoelastic Bearings

• Introduction
• Kinematics of flexible spinning shafts
• Dynamic modeling
• Free vibration analysis
• Nonlinear analysis
• Bearing nonlinearities
• Conclusions
• References

3 Aerostructure problems and applications

Design optimization of multifunctional aerospace structures

• Introduction
• Multifunctional structures
• Computational design and optimization
• Applications
• Design optimization of a novel NLG shimmy damper
• Conclusion
• References

An efficient far-field noise prediction framework towards low-noise landing gear designs for new generations of aircraft

• Introduction and Background
• Landing Gear Noise Predictions
• Numerical Aeroacoustics
• Issues and Methods
• Acoustic Analogies
• Numerical Landing Gear Aeroacoustics
• Problem Statement and Concluding Remarks
• Modeling and Numerical Method
• Hybrid Computational Aeroacoustic Method
• Near-field Flow Numerical Method
• Far-field Acoustic Numerical Method
• Acoustic analogies formulation
• Ffowcs Williams and Hawkings (FW-H) equation
• The Motivation of Multiple 2D Simulations Method (M2DSM)
• Proposed Approach for the LG Far-Field Noise Prediction
• Implementation of the M2DSM on Two Different Landing Gear Models
• Two-wheel Nose Landing Gear (2-NLG) Model
• The 2D CFD setup
• Acoustic Far-Field Computations
• The Lower Part of the LAGOON NLG
• The LAGOON NLG wheels inner-cavities modeling
• Four-wheel Main Landing Gear (4-MLG) Model
• The 2D CFD Setup
  Acoustic Far-Field Computations
• The Lower Part of the RLG
• Results and Discussions
• Results for the 2-NLG (LAGOON)
• The effects of the receiver locations
• The effects of the acoustic source
• Results for the wheels' inner-cavities
• The LAGOON NLG overall far-Field acoustic results
• Results for the 4-MLG (RLG)
• The effect of the receiver locations
• The effects of the acoustic source
• The Cross-Sections of Axles and Wheels of the RLG
• The RLG overall far-field acoustic results
• Summary and Conclusions
• References

Modeling and Experimentation for the Temperature Prediction of a Serpentine Belt

• Drive Transmission System in the aviation industry
• Introduction and importance of thermal model for aviation safety
• Establishment of belt drive analytical-numerical thermal model
• Experimental Setup for validation of the belt drive System
• Result discussion for the accuracy of the belt drive System
• Conclusion
• References

Transfer Path Analysis of Aeroengines by Implementing Bond Graph Theory

• Introduction
• Background
• Measuring Interface Loads using Classical TPA Approach
• Mount Stiffness Measurement Technique
• Matrix Inversion Method (MIM)
• Operational Path Analysis (OPA)
• Operational Path Analysis Theory
• OPAX Method
• Global Transfer Direct Transfer (GTDT) TPA Method
• Bond Graph TPA Method
• Bond Graph
• Methodology
• Developing Bond Graphs
• Aeroengine Modelling
• State Space Equation of the Reduced Aeroengine
• Sample Calculation: Output and Direct Transmissibility Matrices
• Transmissibility Principle
• Bond Graph Transfer Function
• Aeroengine Global Transmissibility Formulation
• Design Guidelines to Minimize Vibration Transfer
• Conclusion
• References

Aeroengine structural health monitoring using bond graph methodology and transmissibility-based analysis

• Introduction
• Transfer Function Fundamentals and Applications
• Bond Graph Transfer Path Analysis Methodology
• Global transmissibility
• Direct transmissibility
• Fundamentals of System
• Transmissibility Analysis using Bond Graph
• Methodology
• Aeroengine Structural Health Monitoring using Transmissibility and TPA
• Principles
• Structural damage detection
• Aeroengine Case study
• Aeroengine bond graph modelling
• Aeroengine structural damage detection
• Structural damage detection protocols and design guidelines
• Finite Element Analysis of the Aeroengine Model
• Modelling and verification
• Conclusion
• References