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Keywords: torsion
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Journal Articles
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. June 2020, 142(6): 061011.
Paper No: BIO-19-1280
Published Online: March 27, 2020
...Nir Emuna; David Durban Vascular tortuosity may impede blood flow, occlude the lumen, and ultimately lead to ischemia or even infarction. Mechanical loads like blood pressure, axial force, and also torsion are key factors participating in this complex mechanobiological process. The available...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. August 2014, 136(8): 081001.
Paper No: BIO-13-1121
Published Online: June 2, 2014
... artery with physiologically relevant flow parameters. To study the effect of coronary artery (CA) geometry change on stent elastic modulus mismatch, models where the curvature, torsion and both curvature and torsion change were examined. The elastic modulus is increased by a factor of two, five, and ten...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. June 2014, 136(6): 061003.
Paper No: BIO-13-1434
Published Online: April 21, 2014
... torsion and bending) on 20 FE models of IVDs with various dimensions was carried out to evaluate the effect of the disc's geometry on its compliance and establish stiffness/morphology relations necessary to the nonlinear normalization. The computed stiffness was then normalized by height (H), cross...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. August 2013, 135(8): 081003.
Paper No: BIO-12-1354
Published Online: June 12, 2013
.... Assoc. Editor: James C. Iatridis. 02 08 2012 20 05 2013 22 05 2013 In Ref. [ 12 ], in vitro bending/torsional coupling is investigated, and it is shown that, as the torque increased, the compressive loading became more tensile. This has important ramifications in the light...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. July 2012, 134(7): 071005.
Published Online: July 13, 2012
... is not extensively studied. In this work, we focus our investigation on the localized hemodynamic effects of dynamic changes in curvature and torsion. It is our objective to understand and reveal the mechanism by which changes in curvature and torsion contribute towards the observed wall shear stress distribution...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J Biomech Eng. June 2012, 134(6): 064502.
Published Online: June 12, 2012
... typically depicted and used, our mean artery was tortuous exhibiting nonplanarity and complex curvature and torsion variations. The bifurcation angle was 36 deg ± 11 deg if measured using arterial centerlines and 15 deg ± 14 deg if measured between the walls of the carotid bifurcation branches. The average...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. October 2011, 133(10): 101003.
Published Online: October 31, 2011
... wall stress in healthy hearts. Studies show that cardiac torsion is sensitive to various disease states, which suggests that it may be an important aspect of cardiac function. Modern imaging techniques have sparked renewed interest in cardiac torsion dynamics, but no work has been done to determine...
Topics: Torsion, Rotation
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J Biomech Eng. January 2011, 133(1): 014501.
Published Online: December 22, 2010
...Rad Zdero; Alison J. McConnell; Christopher Peskun; Khalid A. Syed; Emil H. Schemitsch The mechanical behavior of human femurs has been described in the literature with regard to torsion and tension but only as independent measurements. However, in this study, human femurs were subjected to torsion...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J Biomech Eng. March 2009, 131(3): 034501.
Published Online: December 23, 2008
...Brian C. Glaister; Jason A. Schoen; Michael S. Orendurff; Glenn K. Klute In order to protect sensitive residual limb soft tissues, lower limb prostheses need to control torsional loads during gait. To assist with the design of a torsional prosthesis, this paper used simple mechanical elements...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J Biomech Eng. December 2008, 130(6): 061018.
Published Online: October 23, 2008
... focuses on the first phase of looping, called c-looping, when the HT bends ventrally and twists dextrally (rightward) to create a c-shaped tube. Previous research has shown that bending is an intrinsic process, while dextral torsion is likely caused by external forces acting on the heart. However...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. June 2007, 129(3): 310–314.
Published Online: November 14, 2006
... on cemented implant fixation. The purpose of this investigation was to compare the torsional stability of five different stem cross-sectional shapes—circular, oval, triangular, rectangular with rounded edges, and rectangular with sharp edges—under monotonically increasing and cyclic loading conditions. Seven...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. November 2005, 127(6): 929–933.
Published Online: July 14, 2005
... protocol in sagittal and lateral bending, and torsion. Motion segments were also tested in axial compression. Each specimen was tested in an intact state, then drilled (simulating a transaxial approach to the lumbosacral spine), then with one of two axial fixation rods placed in the spine for stabilization...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. August 2004, 126(4): 466–474.
Published Online: September 27, 2004
... on a standard-linear cohesive-zone (SL-CZ) approach. Tissue specimens of the sheep vocal fold mucosa were subjected to torsional deformation in vitro, at constant strain rates corresponding to twist rates of 0.01, 0.1, and 1.0 rad/s. The vocal fold ECM demonstrated nonlinear stress-strain and rate-dependent...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. October 2003, 125(5): 732–734.
Published Online: October 9, 2003
... of Sawbones “Rigid cellular” PU-R foam tested 20 mm gauge diameter dumb-bell specimens in torsion and under axial loading. Results: Shear moduli ranged from 13.3 to 99.7 MPa, shear strengths from 0.7 MPa to 4.2 MPa. Compressive yield strains varied little with density while shear yield strains had peak values...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. December 2002, 124(6): 706–713.
Published Online: December 27, 2002
...W. Go¨rtz; U. V. Na¨gerl; H. Na¨gerl; M. Thomsen A novel method is presented which permits to assess implanted femoral components with regards to location of fixation and initial stability under cyclic torsional loads. The measurement apparatus tracks the spatial movement at several sites of stem...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. December 2000, 122(6): 576–586.
Published Online: July 10, 2000
... phase of the mixture. In this first investigation, the orthotropic octantwise linear elasticity model was reduced to the more specialized case of cubic symmetry, to reduce the number of elastic constants from twelve to four. Confined and unconfined compression stress-relaxation, and torsional shear...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. August 2000, 122(4): 416–422.
Published Online: February 28, 2000
... instantaneous helical axes characterized the vibrations. The measurements suggest the mechanism that the interface “implant-bone” may already be stressed by axial torsional loads when the femur is loaded by bending impacts that are known to occur during walking. [S0148-0731(00)01604-6] 6 Resonance Ω...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J Biomech Eng. April 2000, 122(2): 166–172.
Published Online: November 30, 1999
...Elijah Garner; Roderic Lakes; Taeyong Lee; Colby Swan; Richard Brand Viscoelastic properties of wet and dry human compact bone were studied in torsion and in bending for both the longitudinal and transverse directions at frequencies from 5 mHz to 5 kHz in bending to more than 50 kHz in torsion. Two...