Fracture parameter analysis of flat shells under out-of-plane loading using ordinary state-based peridynamics

Dai, Ming-Jyun; Tanaka, Satoyuki; Bui, Tinh Quoc; Oterkus, Selda; Öterkuş, Erkan

doi:10.1016/j.engfracmech.2021.107560

Cited by 12 publications

(7 citation statements)

References 38 publications

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“…The expression naturally introduces a length scale parameter, consistent with the fact that fracture needs to be characterized over a microstructurally significant characteristic length [18,19]. Hence, the proposed criterion can be incorporated into non-local computational methods, such as peridynamics [20][21][22] and other meshfree methods [23][24][25] as well thanks to the internal length scale parameter. In the current…”

Section: Introductionmentioning

confidence: 99%

Prediction of fracture toughness of metallic materials

Akçay

Öterkuş

2021

Engineering with Computers

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Fracture toughness is a measurement of fracture resistance and is a crucial parameter in designing and manufacturing structural engineering components, including the components of ships and offshore structures. However, accurate measurement of fracture toughness requires a fatigue pre-cracked specimen which can be challenging to prepare in extremely brittle materials. Moreover, specimen thickness is another requirement which can be challenging to achieve as well, particularly in very tough materials. Therefore, a physics-based closed-form analytical expression is proposed to determine fracture toughness of isotropic materials simply by utilizing a uniaxial tensile test specimen. The expression naturally introduces a length scale parameter, consistent with non-local applications, such as peridynamics, as well. Fracture toughness of various metallic materials, including both brittle and ductile, are predicted and compared to the experimental results in the literature. Predicted fracture toughness values are in good agreement with the experimentally measured ones.

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Section: Introductionmentioning

confidence: 99%

Prediction of fracture toughness of metallic materials

Akçay

Öterkuş

2021

Engineering with Computers

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“…Becauseoftheirhighstrength-to-weightratio,thin-walledstructuresarecommonlyusedinaerospaceandmaritimeindustries.InthePDframework,nonlocalinteractionsi neachmaterialpointareconsideredwithothermaterialpointswithinspecifiedregions.Thenonlocalpropertyleadstolowerefficienciesincomputationtime,especiallyfor3D models.Tosimulatethin-walledstructures,structuralidealizationisoneoftheapproachestoreducecomputationtime.TheKirchhoff-Loveplate [3,4],theMindlin-Reissner plate [5,6],andtheshell [7]modelshavebeenproposedinthePDliterature.Furthermore,severalengineeringapplicationsofthin-walledstructureshavebeenreportedconcernin gnonlinearanalysis [8],buckling [9],vibration [10],stressintensityfactors [11,12],compositematerials [13,14],andshipstrength [15].…”

Section: Introductionmentioning

confidence: 99%

“…The adopted OSPD shell model was examined previously for its capabilities in several areas of investigation [6,11,12,15]. For this reason, this PD model is employed in the present study to assess fracture mechanics behaviors of shell structures near crack surfaces subjected to in-plane or out-of-plane loading.…”

Section: Introductionmentioning

confidence: 99%

Ordinary state-based peridynamic shell model with arbitrary horizon domains for surface effect correction

Dai

Tanaka

Guan

et al. 2021

Theoretical and Applied Fracture Mechanics

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“…For mixed-mode fracture conditions, Imachi et al [23,24] evaluated dynamic SIFs for 2D elastic cracked solids. Dai et al assessed SIFs for shell structures subjected to in-plane [25] and out-of-plane [26] loading.…”

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Static and dynamic mechanical behaviors of cracked Mindlin plates in ordinary state-based peridynamic framework

et al. 2022

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An ordinary state-based peridynamic (PD) model based on the Mindlin plate theory is pre sented to deal with fracture mechanics problems. Static and dynamic stress resultant intensity factors regarded as the primary fracture parameters for plate structures are evaluated by the displacement extrapolation method. Owing to the PD surface effect, however, the accuracy of the displacement field near crack surfaces is significantly affected. Therefore, the arbitrary horizon domain method is adopted to correct the surface effect. It derives the variable PD parameters to properly describe mechanical behaviors for each material point. Several numerical examples are investigated to examine the per formance of the presented method. It indicates that the PD Mindlin plate model incorporated with the arbitrary horizon domain method validly minimizes the influence from the PD surface effect and provides an effective approach to evaluate static and dynamic moment intensity factors. Keywords Peridynamics • Plate structures • Arbitrary horizon domain • PD surface effect • Moment intensity factors 1 IntroductionPeridynamics (PD) [1,2], which does not require spatial derivatives in its governing equations, has been developed to simulate different kinds of complicated fracture problems. For thin-walled struc tures, a shell model is an effective approach with less computation time than a 3D solid model. In the shell model, 2D plane stress and plate bending formulae are adopted to treat in-plane and out of-plane deformations, respectively. However, in contrast to 2D plane stress problems, the studies in plate bending problems are relatively few in the PD literature. O'Grady and Foster derived a non ordinary state-based peridynamic (NOSPD) model for Kirchhoff-Love plates [3] and shells [4] from the concept of rotational springs between interaction bonds. Diyaroglu et al.[5] developed a bond-based peridynamic (BBPD) model for beams and plates with transverse shear deformation. Chowdhury et al. [6] intro

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Fracture parameter analysis of flat shells under out-of-plane loading using ordinary state-based peridynamics

Cited by 12 publications

References 38 publications

Prediction of fracture toughness of metallic materials

Prediction of fracture toughness of metallic materials

Ordinary state-based peridynamic shell model with arbitrary horizon domains for surface effect correction

Static and dynamic mechanical behaviors of cracked Mindlin plates in ordinary state-based peridynamic framework

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