Self-organizing maps for pattern recognition in design of alloys
A work plan is created for the efficient use of a set of computational tools for the design of AlNiCo-type permanent magnetic alloys with the objective of simultaneously extremizing several magnetic properties. Self-organizing maps (SOM) were used to discover various patterns within the dataset using optimization software modeFRONTIER.
Optimum Design of Ablative Thermal Protection Systems for Atmospheric Entry Vehicles
An optimization procedure for the design of ablative heat shields is demonstrated in this work. A numerical method using modeFRONTIER is applied to the ablative thermal protection system of the hypersonic reentry capsule Stardust.
Flexibility analysis and determination of elastic deformations for robot manipulator
This paper presents the flexibility and kineto-elasto dynamic analysis of a robot manipulator. The aim is to produce a trajectory that will improve the motion time and the trajectory tracking of a standard industrial machine whether it is applied to the machine through a simplified controller or a more complex controller. MATLAB and modeFRONTIER are coupled in this methodology.
Combining 1-D components to extract pattern information_It is about more than component similarity
This study records vergence eye movements in humans in order to further refine our understanding of how components are combined to extract pattern disparity from stereo plaids. Two descriptive models were developed and were fit to the data using a multiobjective genetic algorithm under the optimization software package modeFRONTIER.
Implementation and calibration of meso-scale modeling technique for simulation of tensile behavior of fabric materials
In this paper, the proposed calibration methodology constitutes a unique solution for the correct determination of material properties of yarns, which are necessary for the simulation of fabric response. An algorithm in modeFRONTIER was designed to determine the combination of parameters in order to fit the experimental tensile load-displacement curve with the corresponding numerical curve.
MULTI-OBJECTIVE OPTIMIZATION OF VEHICLE OCCUPANT RESTRAINT SYSTEM BY USING EVOLUTIONARY ALGORITHM WITH RESPONSE SURFACE MODEL
This research reports a vehicle occupant restraint system design by using evolutionary multi-objective optimization with response surface model. The vehicle occupant restraint systems are composed of restraint equipment, such as an airbag, a seat belt, and a knee bolster. The optimization aims to improve the safety of the system by evaluating some indexes based on safety regulations.
Advanced Predictive Diesel Combustion Simulation Using Turbulence Model and Stochastic Reactor Model
This work studies the modeling of turbulence time-scales in diesel engines within a 0D model framework. The goal is to see its effect on combustion and emission formation taking into consideration different operating conditions. The combustion is described using the pdf based DI-SRM. Optimization was run using modeFRONTIER.
Reliability-based Robust Design Optimization Using Polynomial Chaos Expansion for Aero-Engine Inlet Applications
This paper describes the methodologies developed by ESTECO during the UMRIDA European Project, dedicated to Uncertainty Management and Robust Design Optimization and implemented in the modeFRONTIER software platform. The implementation and the results of an automatic Multi-Objective Robust Design Optimization methodology applied to a problem in the aerospace industry is described: the acoustic performance optimization of the liner of a typical regional jet engine nacelle (produced for the application treated in this paper by Leonardo Aircraft).
How to optimize an external gear pump in highly constrained conditions
The objective of this project was to take a standard series gear pump with a displacement of about 20 cc/rev and to minimize its noise emission, while at the same time maintaining the same level of performance. The optimizer modeFRONTIER and simulator HygeSim are used to find the optimal configurations of the pump model.
Study of the impact of structural parameters on the dynamic response of an electronic fuel injector
The study concentrates on the effects of structural parameters of an electronic fuel injector on its dynamic response. The injector was developed for a marine medium-speed diesel engine. The dynamic response from the start of the control signal to the end of the needle valve closing was investigated. Firstly, a complete and detailed model of the electronic fuel injector was built and integrated into an optimization model, where a MOGA was applied.