Isolating the Role of Bone Lacunar Morphology on Static and Fatigue Fracture Progression through Numerical Simulations

Buccino, Federica; Cervellera, F.; Ghidini, Marta; Marini, R; Bagherifard, Sara; Vergani, L.

doi:10.3390/ma16051931

Cited by 3 publications

(3 citation statements)

References 47 publications

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“…3a). Jacobian is equal to 0.8 [42]. Isotropic linear elastic material model is chosen with Young modulus and Poisson ratio equal to 1 GPa and 0.25, respectively [43].…”

Section: Mechanical Testing: Computational Analysismentioning

confidence: 99%

Effect of trabecular architectures on the mechanical response in osteoporotic and healthy human bone

Bregoli,

Biffi,

Tuissi

et al. 2024

Med Biol Eng Comput

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Research at the mesoscale bone trabeculae arrangement yields intriguing results that, due to their clinical resolution, can be applied in clinical field, contributing significantly to the diagnosis of bone-related diseases. While the literature offers quantitative morphometric parameters for a thorough characterization of the mesoscale bone network, there is a gap in understanding relationships among them, particularly in the context of various bone pathologies. This research aims to bridge these gaps by offering a quantitative evaluation of the interplay among morphometric parameters and mechanical response at mesoscale in osteoporotic and non-osteoporotic bones. Bone mechanical response, dependent on trabecular arrangement, is defined by apparent stiffness, computationally calculated using the Gibson-Ashby model. Key findings indicate that: (i) in addition to bone density, measured using X-ray absorptiometry, trabecular connectivity density, trabecular spacing and degree of anisotropy are crucial parameters for characterize osteoporosis state; (ii) apparent stiffness values exhibit strong correlations with bone density and connectivity density; (iii) connectivity density and degree of anisotropy result the best predictors of mechanical response. Despite the inherent heterogeneity in bone structure, suggesting the potential benefit of a larger sample size in the future, this approach presents a valuable method to enhance discrimination between osteoporotic and non-osteoporotic samples. Graphical Abstract

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“…3a). Jacobian is equal to 0.8 [42]. Isotropic linear elastic material model is chosen with Young modulus and Poisson ratio equal to 1 GPa and 0.25, respectively [43].…”

Section: Mechanical Testing: Computational Analysismentioning

confidence: 99%

Effect of trabecular architectures on the mechanical response in osteoporotic and healthy human bone

Bregoli,

Biffi,

Tuissi

et al. 2024

Med Biol Eng Comput

Self Cite

View full text Add to dashboard Cite

show abstract

“…In addition, the study proposes a new method for determining the crack initiation and failure loads of the composite plate under tension, and the results obtained thereby are verified numerically. A review of the literature shows that many studies have used XFEM for isotropic materials [ 41 , 42 , 43 , 44 ]. However, there is a lack of studies describing the failure of real sandwich composites (CFRPs) using the numerical XFEM technique.…”

Section: Introductionmentioning

confidence: 99%

Failure Mechanism of Tensile CFRP Composite Plates with Variable Hole Diameter

Wysmulski

2023

Materials

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Real thin-walled composite structures such as aircraft or automotive structures are exposed to the development of various types of damage during operation. The effect of circular hole size on the strength of a thin-walled plate made of carbon fibre-reinforced polymer (CFRP) was investigated in this study. The test object was subjected to tensile testing to investigate the strength and cracking mechanism of the composite structure with variable diameter of the central hole. The study was performed using two independent test methods: experimental and numerical. With increasing diameter of the central hole, significant weakening of the composite plate was observed. The study showed qualitative and quantitative agreement between the experimental and numerical results. The results confirmed the agreement of the proposed FEM model with the experimental test. The novelty of this study is the use of the popular XFEM technique to describe the influence of the hole size on the cracking and failure of the composite structure. In addition, the study proposes a new method for determining the experimental and numerical damage and failure loads of a composite plate under tension.

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“…The novelty of the research problem undertaken in this study is that it describes the phenomenon of fracture and the failure of composite structures using a currently popular XFEM. A literature review demonstrates that numerous studies were devoted to the application of XFEM for isotropic materials [50][51][52][53]. However, there is a lack of studies describing the failure of real layered composites (CFRP) using the numerical XFEM technique.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study of Crack Propagation in the Tensile Composite Plate with the Open Hole

Wysmulski¹

2023

Adv. Sci. Technol. Res. J.

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In this study, the thin-walled plate with the central open hole made of carbon-epoxy composite was investigated. The plate was tested in tension to investigate the mechanism of crack formation in the composite structure. The studies were carried out using two individual methods: experimental and numerical. In the experiment test, load was measured as the function of plate elongation. The Plate elongation was analysed using the Aramis optical noncontact measurement system. In the numerical study, the FEM model reproducing the experimental conditions was developed in the Abaqus software. The cracking process was modelled using the XFEM method (extended finite element method). This procedure allowed the of the composite to be examined over the full range of the tensile load. The behaviour of the plate with a circular open hole was investigated before damage symptoms and the damage initiation load was determined. The study continued to analyse the initial cracking and delamination of the laminate layers, together with crack propagation leading to cracking of all the laminate layers (complete failure of the composite structure). The novelty of this study is that it uses the popular XFEM method to describe the cracking and failure of the composite structure. In addition, the study proposes the novel method for determining the crack initiation and failure loads of the composite plate under tension, and the results obtained thereby are verified numerically.

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Isolating the Role of Bone Lacunar Morphology on Static and Fatigue Fracture Progression through Numerical Simulations

Cited by 3 publications

References 47 publications

Effect of trabecular architectures on the mechanical response in osteoporotic and healthy human bone

Effect of trabecular architectures on the mechanical response in osteoporotic and healthy human bone

Failure Mechanism of Tensile CFRP Composite Plates with Variable Hole Diameter

Numerical and Experimental Study of Crack Propagation in the Tensile Composite Plate with the Open Hole

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