Geometric size effect of Lemaitre damage model parameters of rolled CuAl5 alloy

WANG, Xiu-bin; Yin, De-liang; Zhang, X. P.

doi:10.1016/s1003-6326(23)66173-4

Cited by 2 publications

(1 citation statement)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effect of statistical size on the fatigue life of metal structures can be explained as follows: as the size of the material increases, the number of defects gradually increases, and the strength of the material begins to decrease. 4 Different metal structure shapes have different effects on metal fatigue life, 5 and this effect is called the geometrical size effect. The effect of production size on metal fatigue is mainly due to different processes.…”

Section: Introductionmentioning

confidence: 99%

Probability life calculation model of beam element application and study in welded structures reliability analysis

LYu,

Wang,

Zhang

et al. 2023

Advances in Mechanical Engineering

View full text Add to dashboard Cite

Statistical size and geometrical size are the main factors affecting the service life of mechanical structure calculation. To explore the reliability of the lifespan of beam structures, a probability lifespan numerical calculation method based on Vector Form Intrinsic Finite Element Method (VFIFEM) was proposed, and the method was verified through full lifespan experiments on I-beam welded structures. First, a fatigue fracture model that considers the coupling of residual stress (RS) and cyclic load variations was established. Based on this fatigue fracture model, a probability lifespan calculation model for beam elements was defined by proposing a cross-sectional shape correction coefficient and a position correction coefficient. The proposed probability lifespan model for beam elements was used to calculate the I-beam welded structure, and the calculated results were compared with the full lifespan experiment results, which were close in statistical results, with all experimental results falling within the [10%, 90%] interval except for one experiment. This method effectively couples the influence of statistical size and geometric size on probability lifespan, providing a new approach for the structure probability lifespan calculation in the future.

show abstract

Section: Introductionmentioning

confidence: 99%