Analytical determination of stress intensity factors in thick walled thermally loaded components

Paarmann, Maria; Sander, Manuela

doi:10.1016/j.engfracmech.2020.107125

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…The mechanical mean stress combined with the thermal load magnifies the stress intensity factor. The correlation between stress intensity factor and fatigue crack growth is a powerful tool for fail-safe design approaches applied to lightweight structures [132]. In general, the higher stress intensity factor, the greater the possibility to fracture [133,134].…”

Section: The Cryogenic Performance Of Pristine Thermoplastic Polymermentioning

confidence: 99%

A Review of the Polymer for Cryogenic Application: Methods, Mechanisms and Perspectives

Chen

Yuan

et al. 2021

Polymers

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Recently, the application of polymer-based composites at cryogenic conditions has become a hot topic, especially in aerospace fields. At cryogenic temperature, the polymer becomes more brittle, and the adverse effect of thermal stress induced by temperature is more remarkable. In this paper, the research development of thermoset and thermoplastic polymers for cryogenic applications are all reviewed. This review considers the literature concerning: (a) the cryogenic performance of modified thermoset polymers and the improving mechanisms of the reported modification methods; (b) the cryogenic application potential of some commercial thermoplastic polymers and the cryogenic performance of modified thermoplastic polymers; (c) the recent advance in the use of polymer for special cryogenic environment-liquid oxygen. This paper provides a comprehensive overview of the research development of the polymer for cryogenic application. Moreover, future research directions have been proposed to facilitate its practical applications in aerospace.

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Section: The Cryogenic Performance Of Pristine Thermoplastic Polymermentioning

confidence: 99%

A Review of the Polymer for Cryogenic Application: Methods, Mechanisms and Perspectives

Chen

Yuan

et al. 2021

Polymers

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“…The theory then became more complex with the development of non-linear fracture mechanics. Moreover, to evaluate the failure analysis of engineering materials, many parameters or criteria have been presented over the last few years, such as the stress intensity factor [10], the crack tip opening displacement (CTOD) [11], the crack tip opening angle CTOA [12], and the J integral [13]. Among the objectives of the introduction of numerical analysis is the accurate modelling of crack initiation and propagation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Crack Behaviour in Pipeline System Using FAD Diagram Based on Numerical Simulation under XFEM

et al. 2020

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For a long time, cracked structures have triggered various researchers to develop a structural integrity approach and design models to address the fracture problems. In the present study, a pipeline with an axial semi-elliptical surface defect was examined in detail. Recent works have highlighted the use of the classical finite element method (CFEM) as numerical tools to solve the fracture mechanics; however, this approach comes with a few difficulties in the modelling aspects. To overcome this issue, we proposed the use of the extended finite element method (XFEM), which was implemented in the commercial version of Abaqus software. Moreover, we have used the results based on this technique in the volumetric method to estimate the stress intensity factors (SIFs). Then, this parameter was employed to build the failure assessment diagram (FAD). The FAD curve was used in the current investigation because it is one of the conventional methods for the evaluation of flaws in steel pipes. The XFEM simulations enable us to draw an FAD curve that can be used as a practical reference for defect evaluation in pipeline systems in the industrial world.

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“…have suggested a brand-new computation technique based on the equivalent domain integral for the investigation of Mode-I fractures in thermally stressed orthotropic FGMs.A thermo mechanical analysis of an FGM subjected to thermal shock containing cracks at the edge has been developed(Mete et al 2021). This approach is based on a new numerical technique that considers the temperature in real-time of the dependent material properties.Several authors(Jamal-Omidi et al 2023, Paarmann et al 2020) have modeled the thermal stresses using a decoupled quasi-static thermo elasticity model. The evaluation of transient thermal SIF was made using the 3D-FEmethod in ABAQUS and singular elements in the crack tip(Nabavi et al 2020, Dassault 2014).…”

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confidence: 99%

FEM analysis of thermomechanical effects on stress intensity factors

Abdelghani,

Kebir,

Benguediab

et al. 2024

SEES

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The response of a material to thermo-mechanical loading depends on its thermal and mechanical properties. Some materials may exhibit significant thermal expansion, meaning they expand significantly when heated, while others may be stiffer and show little thermal expansion. To evaluate the behavior of a material or structure subjected to thermo-mechanical loading, advanced analysis and modeling techniques are used, such as finite element modeling. These methods make it possible to predict deformations, stresses and possible failure problems that may occur under the effect of thermo-mechanical loading. In the present paper, assuming that the thermal regime was steady, the effects of thermo-mechanical loads on the stress intensity factor in a 2D cracked plate of functional gradient material (FGM) are examined. The analyzes the effects of thermo-mechanical loads on the stress intensity factor in a 2D cracked plate of functionally gradient material is a complex problem and generally requires advanced modeling and simulation approaches, such as the finite element method. The plate has a crack on the edge and is made of FGM (titanium-zirconia). Analyses are performed for different imposed temperature values, using the Newman’s conditions. The problem is solved using a newly created USDFLD subroutine in the ABAQUS program. In this routine, functionally graded material property variations follow an exponential law function in the plate with cracks. Stress intensity factors are calculated using the J-integral, taking into consideration the variation in properties at the crack tip. Effects of temperature and relative crack length on stress intensity factors were evaluated. The stress intensity factor values obtained by the finite element method (FEM) modeling shows that there is a good correlation with the results obtained in other studies.

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Analytical determination of stress intensity factors in thick walled thermally loaded components

Cited by 5 publications

References 15 publications

A Review of the Polymer for Cryogenic Application: Methods, Mechanisms and Perspectives

A Review of the Polymer for Cryogenic Application: Methods, Mechanisms and Perspectives

Analysis of Crack Behaviour in Pipeline System Using FAD Diagram Based on Numerical Simulation under XFEM

FEM analysis of thermomechanical effects on stress intensity factors

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