Comparison of Monte Carlo and bootstrap analyses for residual life and confidence interval

نویسندگان

چکیده

Abstract Failure starts with creation of a crack, then the propagation crack and eventually fracture material. Furthermore, material selection, geometry, processing residual stresses are critical factors that may contribute to uncertainty prospective failure mechanisms in engineering. These issues also arise computational analysis, problematic model, for instance, three-dimensional surface necessitate numerous degrees freedom during analysis. However, considering multiple incidents failure, detailed analysis efforts prevent premature safety engineering integrity can be carried out. Thus, objective this study is model growth surface-cracked structure. Aluminium alloy 7075-T6 was interest study. The S-version finite element method (SFEM) used propagation. numerical approach developed research probabilistic SFEM. Instead mesh rebuilding, typical approach, SFEM uses global–local overlay create fatigue which research. Empirical computation previous experimental data were evaluate stress intensity factor (SIF), life. SIF determined using virtual closure (VCCM). In addition, generate random parameters, such as Monte Carlo bootstrap methods. SIF, life validated deemed within acceptable range.

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ژورنال

عنوان ژورنال: Materials Science Poland

سال: 2023

ISSN: ['2083-1331', '2083-134X']

DOI: https://doi.org/10.2478/msp-2023-0003