Download or read book Three dimensional Finite Element Analysis as a Tool to Study the Stress Distribution in the Natural and Prosthetic Proximal Tibia written by Stephen H. Hoag and published by . This book was released on 1990 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three dimensional Finite Element Analysis of the Tibial Component in a Total Knee Prosthesis to Study the Problem of Polyethylene Wear written by Sourajyoti Basu and published by . This book was released on 1995 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element Analysis of a Three dimensional Model of the Proximal Human Tibia Containing a Cemented Prosthesis written by Partha Sarathi Kopparti and published by . This book was released on 2004 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three Dimensional Finite Element Analysis of a Tibial Ankle Prosthesis written by Harrison Philip Crowell (III) and published by . This book was released on 1990 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis and Mechanics of Continuous Media written by and published by . This book was released on 1995 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book COST BENEFIT ANALYSIS OF 3D FINITE ELEMENT MODELING OF THE TIBIA USING A HEALTHY RUNNING POPULATION written by Tricia Butler and published by . This book was released on 2021 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bone stress injuries (BSIs) are a common, painful injury in runners. Computational methods, like finite element analysis (FEA), are used to further understand BSI mechanisms. FEA can be performed on three-dimensional (3D) models, however, this method has several drawbacks such as being time consuming and computationally expensive. Alternatively, FEA can be performed on two-dimensional (2D) cross sections which is a more time effective method requiring less user involvement than the 3D models. In this study, magnetic resonance (MR) images of 18 subjects (9 males and 9 females) were used to create full 3D models and 2D cross-sections. The objectives of this study were to compare FEA results from 3D models and 2D cross-sections to identify if the differences are statistically and clinically significant, perform a cost-benefit analysis of the more complex 3D FEA (with ANSYS) to the simpler 2D FEA (with VA-BATTS), and perform a multivariate regression analysis to determine which variables (demographic or geometric) are the largest indicators for increased stresses in both sexes.The 3D tibia models were produced from the segmentation of MR images and patient specific running forces were applied in a 3D computational model using ANSYS. The distal third cross-sections were segmented from the same imaging set and running forces and moments were applied using VA-BATTS. The 33% location of the 3D model illustrated that the majority of the subjects experienced maximum principal and equivalent stresses at the outer medial edge and the outer lateral edge of the cross-sections respectively. When comparing the stresses and strains at the distal third, the 3D model resulted in lower average tensile, compressive, and shear stresses than the 2D cross-section. Based on the results, statistically significant differences in tensile, compressive, and shear stresses were seen between the two approaches. The likeliest contributors to those differences was the use of moments in the 2D cross-sections and the lack of moments in the 3D models. Furthermore, these results were clinically significant because of the difference in magnitude between the results as well as the differences in stress distribution. This study also determined the benefits and negatives of each method and identified that full 3D models were better for full bone visualization and 2D cross-sections were better for specific locations of the bone. Finally, this study found that age, sex, BMI, and cortical cross-sectional area (CSA) did not significantly affect the results of 3D FEA. This study could contribute to the understanding of mechanisms behind BSIs as well as help produce risk-mitigating strategies in the future.
Download or read book Finite Element Analysis of a Three dimensional Model of the Proximal Femur Containing a Cemented Prosthesis written by Rajesh V. Duggineni and published by . This book was released on 2005 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Finite Element Analysis for Stress Distribution in Gripped Tubular Specimens written by RR. Rizzo and published by . This book was released on 1972 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new elastic finite element program is implemented. The analysis can account for general anisotropy and the three-dimensional nature of axisymmetric composite bodies. Attention is directed to characterizing the anomalous stress distributions which can occur in certain anisotropic tube specimens. For axial- and hoop- wrapped tubes accurate principal properties data can be obtained using classical shell theory and assuming uniform stress at the midlength cross section of the tube. For helically laminated tubes, the degree of accuracy is highly influenced by the geometry. A substantial inaccuracy could occur in strength predictions even for what normally are considered thin tubes. The study also identifies the stress distribution, including interlaminar effects, under the gripped area, which is not possible with any known closed form solutions.
Download or read book Three Dimensional Finite Element Analysis Based on the Hybrid Assumed Stress Model written by Cherng-Chi Chang and published by . This book was released on 1984 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three Dimensional Finite Element Analysis of a Single Lap Bolted Joint of Thick Isotropic Materials written by Florin Iancu and published by . This book was released on 2003 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stress Distribution and Optimum Design of Polypropylene and Laminated Transtibial Prosthetic Sockets FEM and Experimental Implementations written by Hayder Al-Shuka and published by GRIN Verlag. This book was released on 2018-02-08 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scientific Study from the year 2017 in the subject Medicine - Other, , language: English, abstract: This study presents analyses for below knee prosthetic socket of a human. Socket stress distribution is performed on three types of socket, polypropylene (5mm), polypropylene (3mm) and a standard laminate (3mm) sockets to determine the stresses path through the prosthetic socket during the gait cycle. It is found that heel strike phase is the critical phase. The stresses increase at the socket base while the maximum deflection is maximum at the patellar region of the socket. This work is achieved by finite element program, ANSYS. The development of design specifications of a below the knee prosthetic socket is presented in this study for successful ambulation and comfort. Seven different design models are created by changing the socket wall thickness and the material. Polypropylene socket gives the best results with regard to the allowable deflection for the regions of the pressure relief areas of the stump. The effect of varying the modulus of elasticity on the polypropylene socket is considered in this study. Three models are analyzed with different tensile creep moduli during different periods. It is found that the polypropylene socket will enlarge in size with time. An experimental study is conducted to compare the strength of five prosthetic sockets made of different materials. Compression, three-point flexural and tensile tests are implemented by the Testometric machine. The laminate sockets have larger compressive stiffness than polypropylene while polypropylene has larger flexural stiffness than the tested laminates except for socket No.5.
Download or read book Finite Element Analysis and Evaluation of an Extended Plane Stress Theory written by Der-Fu Donald Lee and published by . This book was released on 1986 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three dimensional Finite Element Analyses of Open die Forging and Plate Rolling written by Yuh-cheng Shiau and published by . This book was released on 1987 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Finite Element Analysis and Evaluation of a Three dimensional Plate Theory written by Hanwook Cho and published by . This book was released on 1988 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three Dimensional Finite Element Analysis for Nonhomogeneous Materials Using Parallel Explicit Algorithm written by Jeongho Kim and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This chapter addresses the behavior of functionally graded solids under dynamic impact loading within the framework of linear elasticity using parallel explicit algorithm. Numerical examples are presented that verify the dynamic explicit finite element code and demonstrate the dynamic response of graded materials. A three-point bending beam made of epoxy and glass phases under low-velocity impact is studied. Bending stress history for beam with higher values of material properties at the loading edge is consistently higher than that of the homogeneous beam and the beam with lower values of material properties at the loading edge. Larger bending stresses for the former beam may indicate earlier crack initiation times, which were proven by experiments performed by other researchers. Wave propagation in a 3D bar is also investigated. Poisson,Äôs ratio and thickness effects are observed in the dynamic behavior of the bar. Finite element modeling and simulation discussed herein can be a critical tool to help understand physics behind the dynamic events.
Download or read book Three dimensional Elasto viscoplastic Finite Element Analysis of Deformations and Stresses Resulting from the Excavation of Shallow Tunnels written by Christian Kropik and published by . This book was released on 1995 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Application of 3 dimensional Finite Element Methods to Fracture Mechanics and Fatigue Life Prediction written by A. C. Pickard and published by . This book was released on 1986 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
