robust design & 6sigma

Structural Optimization in Early Design Phase @ VOLVO Cars

The presentation examines the structural optimization done in early stages of the design phase.

Tension control optimization of industrial large-scale roll-to-roll system under parametric uncertainties

Roll-to-roll systems are very common in industry for metal, paper, textile and polymer material treatments. The key variables to monitor and control are the web speed and web tension in each span. The objective is to reach the expected web speed while maintaining web tension in an acceptable range around the tension reference.

CFD-based cavitation prediction model calibration with modeFRONTIER and successful application to propeller hydrodynamics

Three different mass transfer models were successfully tuned, based on the experimental data of the Naca66(MOD) hydrofoil, using modeFRONTIER. The calibrated models were then applied to several propeller cases and the results obtained with the different mass transfer models were in line with each other and
agree well with the available experimental data. Successful reproduction, qualitative and quantitative, of the performances and cavitation patterns of propellers were made for non-uniform inflow. 

Design Optimization Applications in Automotive Industry

Where is optimization heading to at Ford Research & Advanced Engineering? Ren-Jye Yang, Senior Technical Leader, gives a comprehensive perspective on past, present and future optimization practices.

Reliability-based Design Optimization applying Polynomial Chaos Expansion- Theory and Applications

Reliability-based Design Optimization is achieving more and more agreement in the industrial design community.  In fact, most of the industrial processes are permeated by uncertainties: the manufactured product is generally different, from a geometric point of view, from the product design because of the dimensional tolerances, and, more frequently, the working point is not fixed, but is characterized by some fluctuations in the operating variables.

Separation control and efficiency improvement in a 2D diffuser by means of contoured cavities

The optimization procedure is developed with modeFRONTIER to obtain the cavity geometry that maximizes the pressure recovery in the diffuser and minimizes the boundary layer separation extent. The introduction of the optimal cavities leads to an increase in pressure recovery of the order of 13% and to a strong reduction of the separation extent.

Design and Optimization under Uncertainties A Simulation and Surrogate Model

This thesis deals with development of complex products via modeling and simulation, and especially the use of surrogate models to decrease the computational efforts when probabilistic optimizations are performed. Many methods that can be used to perform probabilistic optimizations exist and this thesis strives to present and demonstrate the capabilities of several of them. A probabilistic optimization requires different kinds of knowledge.

modeFRONTIER - Status of design optimisation at EADS-M

An insight will be provided on the use of evolutionary algorithms for shape and performance optimization in the filed of aeronautics.Results will be shown for 2D and 3D application with emphasis on the use of sophisticated analysis methods solving the governing flow equations.

Robust Design Framework for IIHS Rear Impact

The presentation focuses on the robust design framework for IIHS rear impact

Robust Design of An Inflatable Knee Bolster

This paper investigates an integrated robust design approach for occupant restraint system by taking advantages of design of experiments, variable screening, stochastic meta-modeling, and genetic algorithm. An inflatable knee bolster design is used as an example to demonstrate the methodology; however, the proposed method is applicable for all occupant restraint system design problems.

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