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Proximal femur bone strength estimated by a computationally fast finite element analysis in a sideways fall configuration.
TLDR
A method to quickly and accurately estimate proximal femur structural stiffness and failure load using QCT-driven FE methods that took less than 11 min to solve using a standard desktop workstation is developed and validated. Expand
Development of an inertia-driven model of sideways fall for detailed study of femur fracture mechanics.
TLDR
These tools will allow more biofidelic laboratory simulation of falls to the side, and more detailed analysis of proximal femur failure mechanisms using human cadaver specimens. Expand
Proximal femur elastic behaviour is the same in impact and constant displacement rate fall simulation.
TLDR
The results indicate that constant displacement rate testing may help understand sub-failure mechanical behaviour, but may not elucidate failure behaviours, which have important ramifications for interpreting the results of previous experiments. Expand
Comparison of explicit finite element and mechanical simulation of the proximal femur during dynamic drop-tower testing.
TLDR
There exists a need to extend the current apparent level material models for bone to cover higher strain rates than previously tested experimentally, and the ability of the FE models to detect vulnerable portions of the bones is demonstrated. Expand
Development of a balanced experimental-computational approach to understanding the mechanics of proximal femur fractures.
TLDR
It is found using a drop tower test protocol that a femoral neck fracture can be created with a fall velocity and energy representative of a sideways fall from standing and that the nested explicit finite element method used allowed us to identify local structural weaknesses associated with femur fracture initiation. Expand
The influence of the modulus-density relationship and the material mapping method on the simulated mechanical response of the proximal femur in side-ways fall loading configuration.
TLDR
There exists a need to carry out a more comprehensive validation study for the SWF loading mode to identify which combination of MMMs and E-ρ relationship leads to the best match for whole bone and local mechanical response. Expand
Morphology based anisotropic finite element models of the proximal femur validated with experimental data.
TLDR
Comparing iso- and anisotropic models to the experimental data resulted in nearly identical correlation and highly similar linear regressions for both whole bone stiffness and strain gauge measurements, which suggests that organ level QCT-based FE models measuring femoral stiffness have little to lose, but studies considering failure of internal structures should consider including anisotropy to their models. Expand
Material mapping strategy to improve the predicted response of the proximal femur to a sideways fall impact.
TLDR
The present study tested the addition of compression-tension asymmetry, tensile bone damage, and cortical-specific strain rate dependency to the material mapping strategy of fifteen dynamic FE models of the proximal femur, and found improved correlations and reduced error for whole bone stiffness and absolute maximum force. Expand
On the Failure Initiation in the Proximal Human Femur Under Simulated Sideways Fall
TLDR
It is found that cortical thickness around the trochanteric-fossa is significantly correlated to the peak force obtained from simulated sideways falling more so than femoral neck cortical thickness, and micro level FEA results indicated that surface holes may be involved in primary failure events. Expand
Experimental investigation of a model forming fabric
Paper making involves three fabrics: forming, pressing, and drying. The forming fabric is responsible for sheet forming, the initial dewatering of a low concentration pulp suspension into a wet sheetExpand
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