scholarly journals An inverse approach for airfoil design

2008 ◽  
Author(s):  
M. T. Rahmati ◽  
G. A. Aggidis ◽  
M. Zangeneh
Keyword(s):  
Inverse Approach

System design using an inverse approach Application to the hybrid vehicle powertrain

2006 ◽  
Vol 40 (3) ◽  
pp. 269-290 ◽  
Author(s):  
Eric Bideaux ◽  
Jérôme Laffite ◽  
Wilfrid Marquis-Favre ◽  
Serge Scavarda ◽  
Franck Guillemard
Keyword(s):  
System Design ◽  
Hybrid Vehicle ◽  
Inverse Approach ◽  
Vehicle Powertrain

M2 tidal dissipation around Vancouver Island: an inverse approach

2004 ◽  
Vol 24 (18) ◽  
pp. 2167-2185 ◽  
Author(s):  
M.G.G. Foreman ◽  
G. Sutherland ◽  
P.F. Cummins
Keyword(s):  
Vancouver Island ◽  
Tidal Dissipation ◽  
Inverse Approach

Separation of temperature and strain in a single fiber BOTDA system by pseudo-inverse approach

2017 ◽  
Author(s):  
Felipe Lima dos Reis Marques ◽  
Claudio Floridia ◽  
Thayane Alves Almeida ◽  
Ariovaldo Antonio Leonardi ◽  
Fabiano Fruett
Keyword(s):  
Single Fiber ◽  
Inverse Approach ◽  
Pseudo Inverse

scholarly journals Considering multiple process observables to determine material model parameters for FE-cutting simulations

2021 ◽  
Author(s):  
Marvin Hardt ◽  
Thomas Bergs
Keyword(s):  
Chip Thickness ◽  
Material Model ◽  
Experimental Investigations ◽  
Model Parameters ◽  
Inverse Approach ◽  
Local Material ◽  
Novel Approach ◽  
Validation Parameters ◽  
Multiple Process ◽  
Cutting Simulations

AbstractAnalyzing the chip formation process by means of the finite element method (FEM) is an established procedure to understand the cutting process. For a realistic simulation, different input models are required, among which the material model is crucial. To determine the underlying material model parameters, inverse methods have found an increasing acceptance within the last decade. The calculated model parameters exhibit good validity within the domain of investigation, but suffer from their non-uniqueness. To overcome the drawback of the non-uniqueness, the literature suggests either to enlarge the domain of experimental investigations or to use more process observables as validation parameters. This paper presents a novel approach merging both suggestions: a fully automatized procedure in conjunction with the use of multiple process observables is utilized to investigate the non-uniqueness of material model parameters for the domain of cutting simulations. The underlying approach is two-fold: Firstly, the accuracy of the evaluated process observables from FE simulations is enhanced by establishing an automatized routine. Secondly, the number of process observables that are considered in the inverse approach is increased. For this purpose, the cutting force, cutting normal force, chip temperature, chip thickness, and chip radius are taken into account. It was shown that multiple parameter sets of the material model can result in almost identical simulation results in terms of the simulated process observables and the local material loads.

scholarly journals UTILITY THEORY FRONT TO BACK — INFERRING UTILITY FROM AGENTS' CHOICES

2014 ◽  
Vol 17 (03) ◽  
pp. 1450018 ◽  
Author(s):  
ALEXANDER M. G. COX ◽  
DAVID HOBSON ◽  
JAN OBłÓJ
Keyword(s):  
Utility Function ◽  
Utility Theory ◽  
Consistency Condition ◽  
Maximization Problem ◽  
Consumption Pattern ◽  
Investment Strategies ◽  
Inverse Approach ◽  
To Come ◽  
Utility Maximization Problem ◽  
Stochastic Setting

We pursue an inverse approach to utility theory and associated consumption and investment problems. Instead of specifying a utility function and deriving the actions of an agent, we assume that we observe the actions of the agent (i.e. consumption and investment strategies) and ask if it is possible to derive a utility function for which the observed behavior is optimal. We work in continuous time both in a deterministic and stochastic setting. In the deterministic setup, we find that there are infinitely many utility functions generating a given consumption pattern. In the stochastic setting of a geometric Brownian motion market it turns out that the consumption and investment strategies have to satisfy a consistency condition (PDE) if they are to come from a classical utility maximization problem. We show further that important characteristics of the agent such as risk attitudes (e.g., DARA) can be deduced directly from the agent's consumption and investment choices.

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