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**Harvard**

Genet, G. (2006) *A statistical approach to multi-input equivalent fatigue loads for the durability of automotive structures*. Göteborg : Chalmers University of Technology (Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie, nr: 2529).

** BibTeX **

@book{

Genet2006,

author={Genet, Gwenaëlle},

title={A statistical approach to multi-input equivalent fatigue loads for the durability of automotive structures},

isbn={91-7291-847-0},

abstract={In the automotive industry, due to temporal and financial
constraints, we need to strongly reduce the duration of the design phase, but still ensure reliability and robustness. Structures in service are often exposed to complex variable amplitude loads. In order to characterize the severity of customers, to define specification for designing metallic structures by computation or for the validation on test rigs, simple forces are more useful. The equivalent fatigue approach, developed at PSA PEUGEOT CITROËN, is a method for transforming variable amplitude measured forces into simpler loads, equivalent in terms of damage. The transformation should be performed without information about the geometry of the structure undergoing the loads. The aim of this work is to extend the one-input equivalent fatigue method, to the multi-input forces.
A great part of the work is devoted to the condition of equivalence of damage between the measured forces and the equivalent ones, when information about the structures is limited. The structures are considered to be elastic and quasi-static. Models of life prediction like Basquin's criterion, for structures submitted to uniaxial fatigue at their critical points, and Morel's model for structures exposed to multiaxial fatigue, are used. Three types of multi-input equivalent fatigue loads are developed. The sinusoidal and the Gaussian multi-input equivalent fatigue loads are studied, as well as the Markov chain multi-input loads. For the Markov loads, a new theory needs to be developed in order to evaluate the rainflow content of linear combinations of multi-input Markov chain. Several applications of those three models are presented, and a set-up of experiments is proposed.},

publisher={Institutionen för matematiska vetenskaper, matematisk statistik, Chalmers tekniska högskola,},

place={Göteborg},

year={2006},

series={Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie, no: 2529},

keywords={Equivalent fatigue, uniaxial and multiaxial high cycle fatigue, multi-input variable amplitude loads, rainflow counting, Morel's model, Basquin's model, Gaussian process, Markov chain},

note={200 pages},

}

** RefWorks **

RT Dissertation/Thesis

SR Electronic

ID 22507

A1 Genet, Gwenaëlle

T1 A statistical approach to multi-input equivalent fatigue loads for the durability of automotive structures

YR 2006

SN 91-7291-847-0

AB In the automotive industry, due to temporal and financial
constraints, we need to strongly reduce the duration of the design phase, but still ensure reliability and robustness. Structures in service are often exposed to complex variable amplitude loads. In order to characterize the severity of customers, to define specification for designing metallic structures by computation or for the validation on test rigs, simple forces are more useful. The equivalent fatigue approach, developed at PSA PEUGEOT CITROËN, is a method for transforming variable amplitude measured forces into simpler loads, equivalent in terms of damage. The transformation should be performed without information about the geometry of the structure undergoing the loads. The aim of this work is to extend the one-input equivalent fatigue method, to the multi-input forces.
A great part of the work is devoted to the condition of equivalence of damage between the measured forces and the equivalent ones, when information about the structures is limited. The structures are considered to be elastic and quasi-static. Models of life prediction like Basquin's criterion, for structures submitted to uniaxial fatigue at their critical points, and Morel's model for structures exposed to multiaxial fatigue, are used. Three types of multi-input equivalent fatigue loads are developed. The sinusoidal and the Gaussian multi-input equivalent fatigue loads are studied, as well as the Markov chain multi-input loads. For the Markov loads, a new theory needs to be developed in order to evaluate the rainflow content of linear combinations of multi-input Markov chain. Several applications of those three models are presented, and a set-up of experiments is proposed.

PB Institutionen för matematiska vetenskaper, matematisk statistik, Chalmers tekniska högskola,

T3 Doktorsavhandlingar vid Chalmers tekniska högskola. Ny serie, no: 2529

LA eng

LK http://www.math.chalmers.se/Stat/Research/Preprints/Doctoral/2006/2.pdf

OL 30