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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 45 for “"elastic analysis"”.
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Elastic analysis of soil media.
Elastic Solutions can be used to predict stresses and displacements in loaded soil media provided the non-linear stress-strain behaviour of the soil is recognised and allowance made for it in calculating displacements. This thesis examines the methods of elastic analysis suitable for examining …
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A Numerical Procedure for the Elastic Analysis of Irregular Slabs
Made available in DSpace on 2014-12-08T23:56:47Z (GMT). No. of bitstreams: 1 6706682.pdf: 5057443 bytes, checksum: b686ed45c5d556c707fcbadf7b8a2261 (MD5) Previous issue date: 1966
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Elastic Analysis of the Loop Tack Test for Pressure Sensitive Adhesives
… numerically. The loop is created from a flexible elastic strip that is bent into a teardrop shape, with its ends clamped together. The strip is tested in a cycle, in which the loop is first pushed onto the surface, compressing the adhesive. Then the loop is pulled up, and gradually debonds from …
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Nonlinear elastic analysis of reinforced concrete structures by the finite element method
Thesis: M.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1979
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An incremental, non-linear displacement method for the elastic analysis of space trusses and plane frames
… of finite deflections is developed for the elastic non-linear analysis of space trusses. In the incremental loading procedure the elastic critical load of a structure is determined by establishing the load at which the determinant of the stiffness matrix passes through zero. Chord shortening …
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Acomodação estrutural na associação de cascas axi-simétricas sujeitas a pressões internas
… flush radial cilinder-sphere intersections. Two elastic analysis methods were developed to find the stresses at the junction, where the most charged elements are situated. The shakedown pressure was achieved by applying Melan's theorem and using the results of the elastic analysis obtained from …
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Analysis of the Behavior of Steel Silos Under Wind Loading (Buckling, Stiffeners, Corrugated Shell, Anchor Bolts)
This study deals with the linear elastic analysis and the linearized buckling analysis of steel silos under wind loading. In the first part, the wind loading pattern is established and the equivalent orthotropic rigidities of standard corrugated sheets are reviewed and, in some cases, new improved …
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Stiffness matrices of carbon nanotube structures
… of carbon nanotubes. Through continuum linear elastic analysis and a displacement-based finite element method, the global in-plane stiffness matrix for an arbitrary carbon atom of the lattice was found. The matrix provides the atomic level forces induced on members of the lattice structures due …
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Análise não-linear física de vigas contínuas em concreto armado e protendido
A non-linear analysis is developed for a prestressed concrete continuous beam, based on the theory of the finite-element method. As a consequence of the theoretical study, a computer program in FORTRAN is developed. This program performs a physical non - linear analysis of a prestressed continuous …
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MEC3DE - um programa para análise elástica tridimensional com o método dos elementos de contorno
This work deals with linear elastic analysis of three-dimensional problems using the boundary element method coupled with the fundamental solution due to Kelvin. The computer program developed allows for triangular and quadrilateral elements, with constant, linear and quadratic interpolation. In …
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Limit Analysis and Shakedown in Plane Frames and Plane Stress Problems
… determination of the shakedown load factor for elastic, perfectly plastic plane frames subjected to cyclic loading or random loads varying between fixed limits. The essential feature of the method is the employment of an automatic force method of elastic analysis which provides self-stress …
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Variation Simulation of Fixtured Assembly Processes for Compliant Structures Using Piecewise-Linear Analysis
While variation analysis methods for compliant assemblies are not new, little has been done to include the effects of multi-step, fixtured assembly processes. This thesis introduces a new method to statistically analyze compliant part assembly processes using fixtures. This method, consistent with …
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Micromechanical finite element model for constitutive elastoplastic analysis of unidirectional fiber-reinforced composites
… stiffness of fiber-reinforced composites in elastic-plastic response is presented. The model is applicable to a periodic diamond array of elastic circular fibers embedded in an elastoplastic matrix subjected to a plane stress loading. This model enforces symmetry and anti-symmetry conditions …
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Numerical Analysis of a Generalized Plane Plastica
… Large displacements and rotations; linear elastic, nonlinear elastic and elastic-plastic material behavior; and general cross section shapes are admitted. For nonlinear elastic analysis a multi-linear stress-strain law is used, thereby allowing an accurate approximation to the constitutive …
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Implications of P-Delta analysis and LRFD of gable frames
… geometric effects. The use of second-order elastic analysis (SOEA) in the design of structural frameworks may lead to more economically designed structures and increased knowledge of structural stability. The research presented here concerns economy of design between the available steel …
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Aplicação de diferenças finitas energéticas em placas com o uso de malhas arbitrárias
… here deals specially with static linear elastic analysis of thin plates subjected to lateral loadings. Results from simple example problems are given and the effectiveness of the method is illustrated.
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Implementação do método dos elementos de contorno para elasticidade bidimensional com o uso de microcomputadores
… the development of a computer program for linear elastic analysis of 2-D plane stress/strain problems using Boundary element method. The fundamental solution due to Kelvin is employed. Four different types of linear isoparametric elements have been implemented for the boundary discretization. …
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STUDY OF THE LOADING OF PILES USING A SEMI-ANALYTICAL METHOD AND THE DIGITAL IMAGE CORRELATION TECHNIQUE
… The pile and soil materials are assumed linear elastic. Analysis results are in a good agreement with results from the finite element method (FEM), with the advantage that the results are obtained at a lower computational cost.
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Redistribuição de momentos fletores em estruturas hiperestáticas
… experimental work on the application of plastic analysis to statically indeterminate reinforced concrete structures are presented herein. Fourteen two-span contiuos beams were tested to failure. These beams were dimensioned according to bending moment diagrams differing in 15% and 25% from the …
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Assessing the Mechanical Response of Pavements During and After Flooding
… with different material types using layered elastic analysis to</p> <p>(1) investigate the pavement response to traffic loads under different moisture conditions,</p> <p>(2) identify the important parameters that affect the performance of inundated pavements,</p> <p>(3) investigate the …
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