Effects of body configuration on pelvic injury in backward fall simulation using 3D finite element models of pelvis–femur–soft tissue complex

This study assesses the modelling capabilities of four constitutive hyperplastic material models to fit the experimental data of the porcine sclera soft tissue. It further estimates the material parameters and discusses their applicability to a finite element model by examining the statistical dispersion measured through the standard deviation. Fifteen sclera tissues were harvested from porcine’ slaughtered at an abattoir and were subjected to equi-biaxial testing. The results show that all the four material models yielded very good correlations at correlations above 96 %. The polynomial (anisotropic) model gave the best correlation of 98 %. However, the estimated material parameters varied widely from one test to another such that there would be needed to normalise the test data to avoid long optimisation processes after applying the average material parameters to finite element models. However, for application of the estimated material parameters to finite element models, there would be needed to consider normalising the test data to reduce the search region for the optimisation algorithms. Although the polynomial (anisotropic) model yielded the best correlation, it was found that the Choi-Vito had the least variation in the estimated material parameters thereby making it an easier option for application of its material parameters to a finite element model and also requiring minimum effort in the optimisation procedure. For the porcine sclera tissue, it was found that the anisotropy more influenced by the fiber-related properties than the background material matrix related properties.

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Using 3D finite element models verified the importance of callus material and microstructure in biomechanics restoration during bone defect repair

Computer Methods in Biomechanics & Biomedical Engineering ◽

10.1080/10255842.2018.1425404 ◽

2018 ◽

Vol 21 (1) ◽

pp. 83-90 ◽

Cited By ~ 1

Author(s):

Chentian Li ◽

Rongwei Tan ◽

Yuanjun Guo ◽

Songjian Li

Keyword(s):

Finite Element ◽

Bone Defect ◽

Finite Element Models ◽

3D Finite Element ◽

Bone Defect Repair ◽

Defect Repair

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Multiphasic Finite Element Analysis of Physical Signals and Solute Transport in the Human Intervertebral Disc

Advances in Bioengineering ◽

10.1115/imece2004-59837 ◽

2004 ◽

Author(s):

Hai Yao ◽

Wei Yong Gu

Keyword(s):

Finite Element Analysis ◽

Finite Element ◽

Soft Tissue ◽

Intervertebral Disc ◽

Mixture Theory ◽

Element Model ◽

Tissue Composition ◽

Element Analysis ◽

3D Finite Element ◽

Disc Nutrition

A 3D finite element model for charged hydrated soft tissue containing charged/uncharged solutes was developed based on the multi-phasic mechano-electrochemical mixture theory [1–2]. This model was applied to analyze the mechanical, chemical and electrical signals within the human intervertebral disc under mechanical loading. The effects of tissue composition and material property on the physical signals and the transport of fluid, ions and nutrients were investigated. This study is important for understanding disc biomechanics, disc nutrition and disc mechanobiology.

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The Peak Stress Method combined with 3D finite element models to assess the fatigue strength of complex welded structures

Procedia Structural Integrity ◽

10.1016/j.prostr.2019.12.067 ◽

2019 ◽

Vol 19 ◽

pp. 617-626 ◽

Cited By ~ 4

Author(s):

Alberto Campagnolo ◽

Ilaria Roveda ◽

Giovanni Meneghetti

Keyword(s):

Finite Element ◽

Fatigue Strength ◽

Peak Stress ◽

Finite Element Models ◽

Welded Structures ◽

3D Finite Element

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EFFECT OF FACE COOLING ON WORKPIECE TEMPERATURES USING 2D AND 3D FINITE ELEMENT ANALYSIS OF CREEP-FEED GRINDING

Transactions of the Canadian Society for Mechanical Engineering ◽

10.1139/tcsme-2008-0029 ◽

2008 ◽

Vol 32 (3-4) ◽

pp. 439-452 ◽

Cited By ~ 1

Author(s):

David Anderson ◽

Andrew Warkentin ◽

Robert Bauer

Keyword(s):

Finite Element ◽

Steady State ◽

Contact Temperature ◽

Grinding Wheel ◽

Finite Element Models ◽

3D Finite Element ◽

Creep Feed ◽

2D And 3D ◽

Maximum Contact ◽

Face Cooling

This work uses validated 2D and 3D finite element models of the creep-feed grinding operation to study the effects of face cooling on the workpiece temperatures. The results show that as the intensity of the face cooling is increased the maximum contact temperature decreases and the location of the maximum contact temperature shifts away from the finished workpiece material and towards the uncut workpiece surface. The finite element models are also used to study the maximum temperatures along the workpiece during a complete grinding pass. The temperature profiles show that there are four important temperature features on the workpiece, which are the cut-in, steady-state, temperature spike, and cut-out zones. Cut-in occurs when the grinding wheel initially engages the workpiece, steady-state occurs in the middle of the workpiece, the temperature spike occurs at the beginning of cut-out, and cut-out occurs as the grinding wheel disengages from the workpiece. Finally, the results show that face cooling need only be applied to the area immediately adjacent to the contact zone to be effective and that there is very little benefit to applying coolant to the entire front and back workpiece faces.

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