Development of a fatigue life prediction methodology for welded steel semi-trailer components based on a new criterion
| Autor: | Luis Castejon, Pablo Luque, Jesús Cuartero, David Valladares, L. Tello, David Ranz, Hugo Malon, Daniel Álvarez Mántaras |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Cyclic stress
Computer science business.industry General Engineering 020101 civil engineering 02 engineering and technology Welding Structural engineering Finite element method Bracing 0201 civil engineering Semi-trailer law.invention Stress (mechanics) Axle 020303 mechanical engineering & transports 0203 mechanical engineering law General Materials Science business Weibull distribution |
| Zdroj: | Scopus RUO. Repositorio Institucional de la Universidad de Oviedo instname Zaguán. Repositorio Digital de la Universidad de Zaragoza |
| Popis: | This paper presents a procedure developed to predict the fatigue life in components made of steel, based on the mechanical properties of the base material and Thermally Affected Zones (TAZs) owing to welding. The fatigue life cycles of the studied components are obtained based on a certain survival probability provided by a Weibull distribution. This procedure is thought to be applied on semi-trailer components, and therefore it is proposed for the steels that are typically used in its manufacturing. A criterion for the adjustment of the exponent and the stress stroke of the fatigue life curve in welded joints is proposed in which the parameters that define the alternating stress versus the number of cycles to failure (S-N) curve are obtained exclusively from the ratio between the base material yield stress of a given steel and the strength of its Thermally Affected Zone. This procedure is especially useful for steels that do not have a complete characterization of their fatigue parameters. These developments are implemented in a subroutine that can be applied in commercial codes based on Finite Element Method (FEM) to obtain a fatigue life prediction. Finally, a numerical-experimental validation of the developed procedure is carried out by means of a semi-trailer axle bracing support fatigue analysis. |
| Databáze: | OpenAIRE |
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