Investigation of the mechanical interaction of the trabecular core with an external shell using rapid prototype and finite element models

Donnell, P. Mc; Harrison, Noel M.; Lohfeld, Stefan; Kennedy, Oran D.; Zhang, Y.; Hugh, P.E. Mc

doi:10.1016/j.jmbbm.2009.03.002

Cited by 15 publications

(14 citation statements)

References 56 publications

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“…A further limitation of this approach is that the strains or deformations that take place internally, e.g., within trabecular networks, cannot be described or analysed. Yet determining the influence of loading on trabecular networks is important for various reasons, including improved understanding of the mechanical consequences of osteoporosis, and trabecular remodelling or loss after orthopaedic implant insertion (Harrison et al, 2008;Harrison and McHugh, 2010;Mc Donnell et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of a micromechanical model of bone and a new 3D approach to validation

Evans¹,

Parr²,

Clausen³

et al. 2012

Journal of Biomechanics

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Section: Introductionmentioning

confidence: 99%

Finite element analysis of a micromechanical model of bone and a new 3D approach to validation

Evans¹,

Parr²,

Clausen³

et al. 2012

Journal of Biomechanics

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“…This is one of the few publications in which the key role of the cortical shell has been reported and whilst it seems obvious that this should be considered it has often been neglected in other experimental work presented in the literature. Surprisingly, little current literature contains any comprehensive FE models where both the screw and the trabecular micro-architecture are considered in contact, although there are many contributions where both components are treated in isolation [19,22,31].…”

Section: Review Of Literaturementioning

confidence: 99%

An approximate model for cancellous bone screw fixation

Brown¹,

Sinclair²,

Day³

et al. 2013

Computer Methods in Biomechanics and Biomedical Engineering

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This paper presents a finite element (FE) model to identify parameters that affect the performance of an improved cancellous bone screw fixation technique, and hence potentially improved fracture treatment. In cancellous bone of low apparent density it can be difficult to achieve adequate screw fixation and hence provide stable fracture fixation that enables bony healing. Data from predictive FE models indicate that cements can have significant potential to improve screw holding power in cancellous bone. These FE models are used to demonstrate the key parameters that determine pullout strength in a variety of screw, bone, and cement set-ups, and to compare the effectiveness of different configurations. The paper concludes that significant advantages, up to an order of magnitude, in screw pull-out strength in cancellous bone might be gained by the appropriate use of a currently-approved calcium phosphate cement.

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“…DLF has an application not only in the industrial field but also in medical treatment. Donnell et al [14] built a finite element model for trabecular core with an external shell using rapid prototyping and have found that the stiffening on the shell is dominant. Wang et al [15], using premixed powders of TiB2 and Ti6Al4V, fabricated reinforced composites by direct laser fabrication and got TiB during laser fabrication.…”

Section: Introductionmentioning

confidence: 99%

Subarea simulation and distributed computing of direct laser fabrication

Wang

Liu

Zhao

et al. 2013

Int J Adv Manuf Technol

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Recently, the researches on the relationships among parameter, temperature, thermal stress, and residual thermal stress in direct laser fabrication (DLF) are extensively conducted. However, it takes a long time to simulate the large-scale workpiece, and thus, the studies on simulations are still limited to small test parts. This paper presents an original idea that the large-scale workpiece is substituted by subarea simulation for DLF finite element model. In simulating the workpiece DLF, we have established two groups of models to which two discrepant approaches are applied. Unlike the traditional time-consuming methods for intact simulation, our subarea simulation method saves a large amount of time and internal memory, which is vital for the large-scale simulating process. Our novel approach shows that a large-scale workpiece can be divided into several subareas for simulation such that finite element computation can be distributed to a certain number of computers working simultaneously. The experimental results verify that our approach benefits the subarea simulation as well as the distributed computation of DLF.

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Investigation of the mechanical interaction of the trabecular core with an external shell using rapid prototype and finite element models

Cited by 15 publications

References 56 publications

Finite element analysis of a micromechanical model of bone and a new 3D approach to validation

Finite element analysis of a micromechanical model of bone and a new 3D approach to validation

An approximate model for cancellous bone screw fixation

Subarea simulation and distributed computing of direct laser fabrication

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