Structure service life assessment under combined loading using probability approach
Journal Title: Frattura ed Integrità Strutturale - Year 2016, Vol 10, Issue 38
Abstract
This article presents a basic research approach for probabilistic assessment of vehicle structure fatigue endurance under multiaxial loading. One representative welded structural detail of the bottom joint plate of an articulated bus was selected for the case study. The character of the loading on the joint during a service test is analyzed and discussed. The methodology for estimation of the damage level in the joint builds on deterministic procedures for railway vehicle assessment based on shear, longitudinal and transverse stress components. This approach based on the equivalent stress and particular load capacity factors was expanded to include the probabilistic perspective.
Authors and Affiliations
Miloslav Kepka, Miloslav Kepka Jr. , Jan Chvojan, Jaroslav Václavík
Keywords
Related Articles
- EP ID EP159689
- DOI 10.3221/IGF-ESIS.38.11
- Views 68
- Downloads 0
Damage localization and rupture with gradient damage models
We propose a method of construction of non homogeneous solutions to the problem of traction of a bar made of an elastic-damaging material whose softening behavior is regularized by a gradient damage model. We show...
Estimation of fatigue lifetime for selected metallic materials under multiaxial variable amplitude loading
This paper initially investigates the accuracy of two methods, i.e., the Maximum Variance Method (MVM) and the Maximum Damage Method (MDM), in predicting the orientation of the crack initiation plane in three...
FEM simulation of a crack propagation in a round bar under combined tension and torsion fatigue loading
An edge crack propagation in a steel bar of circular cross-section undergoing multiaxial fatigue loads is simulated by Finite Element Method (FEM). The variation of crack growth behaviour is studied under axial a...
A three-parameter model for fatigue crack growth data analysis
A three-parameters model for the interpolation of fatigue crack propagation data is proposed. It has been validated by a Literature data set obtained by testing 180 M(T) specimens under three different loading leve...
Influence of crack offset distance on the interaction of multiple cracks on the same side in a rectangular plate
In the present work finite element method has been employed to study the interaction of multiple cracks in a finite rectangular plate of unit thickness with cracks on the same side under uniaxial loading condition...