Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Ct Scan Based Finite Element Analysis For The Assessment Of The Effect Of Cortical Bone Distribution Geometric Parameters And Crack Initiation On Femurs Fracture
Download Ct Scan Based Finite Element Analysis For The Assessment Of The Effect Of Cortical Bone Distribution Geometric Parameters And Crack Initiation On Femurs Fracture full books in PDF, epub, and Kindle. Read online Ct Scan Based Finite Element Analysis For The Assessment Of The Effect Of Cortical Bone Distribution Geometric Parameters And Crack Initiation On Femurs Fracture ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis CT-scan Based Finite Element Analysis for the Assessment of the Effect of Cortical Bone Distribution, Geometric Parameters, and Crack Initiation on Femur's Fracture by : Shirin M. Selmi
Download or read book CT-scan Based Finite Element Analysis for the Assessment of the Effect of Cortical Bone Distribution, Geometric Parameters, and Crack Initiation on Femur's Fracture written by Shirin M. Selmi and published by . This book was released on 2007 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bone Geometry from CAT Scans for Finite Element Analysis by : Michael McCarthy
Download or read book Bone Geometry from CAT Scans for Finite Element Analysis written by Michael McCarthy and published by . This book was released on 1989 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling of Bone Material Properties from CT Scans by : Avram Allan Edidin
Download or read book Modeling of Bone Material Properties from CT Scans written by Avram Allan Edidin and published by . This book was released on 1991 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prediction of Femoral Strength Using Automated Finite Element Modeling by : Joyce Helene Keyak
Download or read book Prediction of Femoral Strength Using Automated Finite Element Modeling written by Joyce Helene Keyak and published by . This book was released on 1996 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Finite Element Analysis of Orthopaedic Plates and Screws to Reduce the Effects of Stress Shielding by : Kristina Haase
Download or read book Finite Element Analysis of Orthopaedic Plates and Screws to Reduce the Effects of Stress Shielding written by Kristina Haase and published by . This book was released on 2009 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanical Testing of Bone and the Bone-Implant Interface by : Yuehuei H. An
Download or read book Mechanical Testing of Bone and the Bone-Implant Interface written by Yuehuei H. An and published by CRC Press. This book was released on 1999-11-29 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: The mechanical properties of whole bones, bone tissue, and the bone-implant interfaces are as important as their morphological and structural aspects. Mechanical Testing of Bone and the Bone-Implant Interface helps you assess these properties by explaining how to do mechanical testing of bone and the bone-implant interface for bone-related research
Book Synopsis A Finite Element Analysis of the Effects of Biaxial Loading on Fracture by : James D. Lee
Download or read book A Finite Element Analysis of the Effects of Biaxial Loading on Fracture written by James D. Lee and published by . This book was released on 1976 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: A finite element analysis combining with series-type analytic solution around the crack tip has been carried out with the purpose to study the biaxial effects of a center-cracked specimen. The method adopted makes it possible to show not only numerically, but also analytically that the uniform biaxial loading does not affect the stress intensity factor, but it does affect the energy release rate and the path of maximum sigma sub theta theta. The effects of geometric parameters and boundary conditions are also shown.
Download or read book Bones written by John D. Currey and published by Princeton University Press. This book was released on 2013-10-31 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a comprehensive and accessible overview of what is known about the structure and mechanics of bone, bones, and teeth. In it, John Currey incorporates critical new concepts and findings from the two decades of research since the publication of his highly regarded The Mechanical Adaptations of Bones. Crucially, Currey shows how bone structure and bone's mechanical properties are intimately bound up with each other and how the mechanical properties of the material interact with the structure of whole bones to produce an adapted structure. For bone tissue, the book discusses stiffness, strength, viscoelasticity, fatigue, and fracture mechanics properties. For whole bones, subjects dealt with include buckling, the optimum hollowness of long bones, impact fracture, and properties of cancellous bone. The effects of mineralization on stiffness and toughness and the role of microcracking in the fracture process receive particular attention. As a zoologist, Currey views bone and bones as solutions to the design problems that vertebrates have faced during their evolution and throughout the book considers what bones have been adapted to do. He covers the full range of bones and bony tissues, as well as dentin and enamel, and uses both human and non-human examples. Copiously illustrated, engagingly written, and assuming little in the way of prior knowledge or mathematical background, Bones is both an ideal introduction to the field and also a reference sure to be frequently consulted by practicing researchers.
Book Synopsis Extended Finite Element Method by : Soheil Mohammadi
Download or read book Extended Finite Element Method written by Soheil Mohammadi and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important textbook provides an introduction to the concepts of the newly developed extended finite element method (XFEM) for fracture analysis of structures, as well as for other related engineering applications. One of the main advantages of the method is that it avoids any need for remeshing or geometric crack modelling in numerical simulation, while generating discontinuous fields along a crack and around its tip. The second major advantage of the method is that by a small increase in number of degrees of freedom, far more accurate solutions can be obtained. The method has recently been extended to nonlinear materials and other disciplines such as modelling contact and interface, simulation of inclusions and holes, moving and changing phase problems, and even to multiscale analyses. The book is self contained, with summaries of both classical and modern computational techniques. The main chapters include a comprehensive range of numerical examples describing various features of XFEM.
Book Synopsis A Finite Element Analysis of Plated Bones by : Michael Hart Schwartz
Download or read book A Finite Element Analysis of Plated Bones written by Michael Hart Schwartz and published by . This book was released on 1988 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bioinspired Structures and Design by : Wole Soboyejo
Download or read book Bioinspired Structures and Design written by Wole Soboyejo and published by Cambridge University Press. This book was released on 2020-09-17 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Master simple to advanced biomaterials and structures with this essential text. Featuring topics ranging from bionanoengineered materials to bio-inspired structures for spacecraft and bio-inspired robots, and covering issues such as motility, sensing, control and morphology, this highly illustrated text walks the reader through key scientific and practical engineering principles, discussing properties, applications and design. Presenting case studies for the design of materials and structures at the nano, micro, meso and macro-scales, and written by some of the leading experts on the subject, this is the ideal introduction to this emerging field for students in engineering and science as well as researchers.
Book Synopsis Multiscale Biomechanics and Tribology of Inorganic and Organic Systems by : Georg-Peter Ostermeyer
Download or read book Multiscale Biomechanics and Tribology of Inorganic and Organic Systems written by Georg-Peter Ostermeyer and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book gathers authoritative contributions concerning multiscale problems in biomechanics, geomechanics, materials science and tribology. It is written in memory of Sergey Grigorievich Psakhie to feature various aspects of his multifaceted research interests, ranging from theoretical physics, computer modeling of materials and material characterization at the atomic scale, to applications in space industry, medicine and geotectonics, and including organizational, psychological and philosophical aspects of scientific research and teaching as well. This book covers new advances relating to orthopedic implants, concerning the physiological, tribological and materials aspects of their behavior; medical and geological applications of permeable fluid-saturated materials; earthquake dynamics together with aspects relating to their managed and gentle release; lubrication, wear and material transfer in natural and artificial joints; material research in manufacturing processes; hard-soft matter interaction, including adhesive and capillary effects; using nanostructures for influencing living cells and for cancer treatment; manufacturing of surfaces with desired properties; self-organization of hierarchical structures during plastic deformation and thermal treatment; mechanics of composites and coatings; and many more. Covering established knowledge as well as new models and methods, this book provides readers with a comprehensive overview of the field, yet also with extensive details on each single topic.
Book Synopsis Finite Element Analysis of a Femur to Deconstruct the Design Paradox of Bone Curvature by : Sameer Jade
Download or read book Finite Element Analysis of a Femur to Deconstruct the Design Paradox of Bone Curvature written by Sameer Jade and published by . This book was released on 2012 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: The femur is the longest limb bone found in humans. Almost all the long limb bones found in terrestrial mammals, including the femur studied herein, have been observed to be loaded in bending and are curved longitudinally. The curvature in these long bones increases the bending stress developed in the bone, potentially reducing the bone's load carrying capacity, i.e. its mechanical strength. Therefore, bone curvature poses a paradox in terms of the mechanical function of long limb bones. The aim of this study is to investigate and explain the role of longitudinal bone curvature in the design of long bones. In particular, it has been hypothesized that curvature of long bones results in a trade-off between the bone's mechanical strength and its bending predictability. This thesis employs finite element analysis of human femora to address this issue. Simplified human femora with different curvatures were modeled and analyzed using ANSYS Workbench finite element analysis software. The results obtained are compared between different curvatures including a straight bone. We examined how the bone curvature affects the bending predictability and load carrying capacity of bones. Results were post processed to yield probability density functions (PDFs) for circumferential location of maximum equivalent stress for various bone curvatures to assess the bending predictability of bones. To validate our findings on the geometrically simplified ANSYS Workbench femur models, a digitally reconstructed femur model from a CT scan of a real human femur was employed. For this model we performed finite element analysis in the FEA tool, Strand7, executing multiple simulations for different load cases. The results from the CT scanned femur model and those from the CAD femur model were then compared. We found general agreement in trends but some quantitative differences most likely due to the geometric differences between the digitally reconstructed femur model and the simplified CAD models. As postulated by others, our results support the hypothesis that the bone curvature is a trade-off between the bone strength and its bending predictability. Bone curvature increases bending predictability at the expense of load carrying capacity.
Book Synopsis TWO AND THREE-DIMENSIONAL FINITE ELEMENT ANALYSIS OF PLASTICITY-INDUCED FATIGUE CRACK CLOSURE? A COMPREHENSIVE PARAMETRIC STUDY. by :
Download or read book TWO AND THREE-DIMENSIONAL FINITE ELEMENT ANALYSIS OF PLASTICITY-INDUCED FATIGUE CRACK CLOSURE? A COMPREHENSIVE PARAMETRIC STUDY. written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Finite element analyses are frequently used to model growing fatigue cracks and the associated plasticity-induced crack closure. Two-dimensional, elastic-perfectly plastic finite element analyses of middle-crack tension (M(T)), bend (SEB), and compact tension (C(T)) geometries were conducted to study fatigue crack closure and to calculate the crack opening values under plane-strain and plane-stress conditions. The loading was selected to give the same maximum stress intensity factor in both geometries, and thus similar initial forward plastic zone sizes. Mesh refinement studies were performed on all geometries with various element types. For the C(T) geometry, negligible crack opening loads under plane-strain conditions were observed. In contrast, for the M(T) specimen, the plane-strain crack opening stresses were found to be significantly larger. This difference was shown to be a consequence of in-plane constraint. Under plane-stress conditions, it was found that the in-plane constraint has negligible effect, such that the opening values are approximately the same for the C(T), SEB, and M(T) specimens. Next, the crack opening values of the C(T), SEB and M(T) specimens were compared under various stress levels and load ratios. The effect of a highly refined mesh on crack opening values was noted and significantly lower crack opening values than those reported in literature were found. A new methodology is presented to calculate crack opening values in planar geometries using the crack surface nodal force distribution under minimum loading as determined from finite element analyses. The calculated crack opening values are compared with values obtained using finite element analysis and more conventional crack opening assessment methodologies. It is shown that the new method is independent of loading increment, integration method (normal and reduced integration), and crack opening assessment location. The compared opening values were in good agreement with strip-yield.
Book Synopsis A Finite Element Study of the Human Proximal Femur Bone Fracture Patterns Due to Impact by : Reena Thomas
Download or read book A Finite Element Study of the Human Proximal Femur Bone Fracture Patterns Due to Impact written by Reena Thomas and published by . This book was released on 2008 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biomimetics written by Mehmet Sarikaya and published by American Institute of Physics. This book was released on 1995 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Market: Students and researchers in geophysics, astronomy, and astrophysics. This book reports on the timely Earth Observing System (EOS) Program's wide range of scientific investigations, observational capabilities, vast data and information system, and educational activities. Because its primary goal is to determine the extent, causes, and regional consequences of global climate change, this program provides the scientific knowledge needed by world leaders to formulate sound and equitable environmental policies.
Book Synopsis Computed Tomography Based Estimation of Bone Rigidity and Strength Under Combined Bending and Torsion by : Lampros Kourtis
Download or read book Computed Tomography Based Estimation of Bone Rigidity and Strength Under Combined Bending and Torsion written by Lampros Kourtis and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A new method to evaluate bone rigidity and strength using tomographic bone images obtained via QCT (Quantitative Computed Tomography) is introduced. A newly developed computer program named VA-BATTS is used for image processing, bone segmentation, mesh creation, material assignment and calculation of far field normal and shear stresses as well as other cross sectional properties. In order to calculate torsional and transverse shear stresses in prismatic bodies having inhomogenous material properties, a new two-dimensional finite element formulation to estimate is presented. The formulation combines the torsional and transverse shear problem solutions and adds terms to account for the material inhomogeneity into one Weak Form of the problem, further discretized to yield a numerical approximation of the shear stresses problem. Results were validated using analytical models as well as three dimensional commercial code test cases yielding mean errors over the entire domain of less than 1%. This semi-automated application is publicly distributed and can be downloaded from https://simtk.org/home/va-batts. VA-BATTS implements an elliptical stress failure criterion to predict bone strength. To validate, fifty-two fresh frozen femurs were tested under combined three-point bending and torsion to failure. VA-BATTS was able to predict bone failure under combined bending and torsion (R2=0.68) as well as bone torsional (R2=0.80) and bending (R2=0.50) rigidity. Using multivariate analysis that combined the elliptical stress failure and the torsional and bending rigidities, the prediction confidence level was raised (R2=0.87), comparable to existing more complex three dimensional finite element studies. The elliptical stress criterion suggests that the distal femur is weaker, in absolute terms, than the midshaft femur suggesting an explanation of the increased rate of distal femur fractures in patients with Spinal Cord Injury. In general, the newly introduced method proved to yield more accurate predictions compared to DXA derived Bone Mineral Density measurements (R2=0.56). Fracture patterns were analyzed to show mostly spiral patterns where torsional loads were applied. In addition, the accuracy of three point bending experiments was examined. Three parameters that may introduce errors in the predictions - transverse shear, local deformation (indentation) as well as cross sectional deformation effect -- were studied using a parametric finite element model. The model shows that depending on the geometric properties of the bone, errors as high as 75% may be introduced in the estimation of the bone elastic modulus. Bone rigidity estimates may now be corrected using the correction factors supplied in this study.
