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Buckling Of Columns


Buckling Of Columns
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Buckling Of Columns


Buckling Of Columns
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Author : Mirko Roš
language : en
Publisher:
Release Date : 1951

Buckling Of Columns written by Mirko Roš and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1951 with Buckling (Mechanics) categories.




Dynamic Buckling Of Columns


Dynamic Buckling Of Columns
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Author : Bruno Hegglin
language : en
Publisher:
Release Date : 1962

Dynamic Buckling Of Columns written by Bruno Hegglin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Buckling (Mechanics) categories.


Experimental results of dynamic buckling tests of columns in which plastic deformation was expected to occur are given. The tests were performed in the same range of the dynamic similarity number as those at Polytechnic Institute of Brooklyn; however the similarity numbers were obtained with shorter columns and higher loading velocities to accommodate shorter columns and to provide more rigidity and reliability. As a CONSEQUENCE ANY COMPONENTS OF THE MECHANICAL PART AND NEARLY THE WHOLE ELECTRICAL PART OF THE MACHINE HAVE BEEN REDESIGNED AND NEW METHODS IN RECORDING WERE USED.



Dynamic Buckling Of Columns Inside Oil Wells


Dynamic Buckling Of Columns Inside Oil Wells
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Author : Marcelo Anunciação Jaculli
language : en
Publisher: Springer
Release Date : 2018-05-08

Dynamic Buckling Of Columns Inside Oil Wells written by Marcelo Anunciação Jaculli and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-08 with Technology & Engineering categories.


This book introduces the underlying concepts of column dynamics and buckling, based on the latest state-of-the-art research on this innovative topic. It begins with a summary of the basic concepts behind column dynamics and buckling, before moving on to the models for studying dynamic buckling inside oil wells. Four models with increasing complexity are presented: columns without friction; columns with friction; columns inside slant wells; and columns inside offshore wells. Each model is divided into two cases, depending on whether the column is being tripped in or out. A case study is used to demonstrate these models and is further developed as each model is presented and explained. The results include comparisons between the models themselves, thus showing the implications of the adopted hypotheses of each. This book enables academic, industrial, and graduate student readers to fully understand the fundamentals of dynamic buckling and to further develop the presented models for their own research.



Structural Stability Theory And Practice


Structural Stability Theory And Practice
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Author : Sukhvarsh Jerath
language : en
Publisher: John Wiley & Sons
Release Date : 2020-12-30

Structural Stability Theory And Practice written by Sukhvarsh Jerath and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-30 with Technology & Engineering categories.


Discover the theory of structural stability and its applications in crucial areas in engineering Structural Stability Theory and Practice: Buckling of Columns, Beams, Plates, and Shells combines necessary information on structural stability into a single, comprehensive resource suitable for practicing engineers and students alike. Written in both US and SI units, this invaluable guide is perfect for readers within and outside of the US. Structural Stability Theory and Practice: Buckling of Columns, Beams, Plates, and Shell offers: Detailed and patiently developed mathematical derivations and thorough explanations Energy methods that are incorporated throughout the chapters Connections between theory, design specifications and solutions The latest codes and standards from the American Institute of Steel Construction (AISC), Canadian Standards Association (CSA), Australian Standards (SAA), Structural Stability Research Council (SSRC), and Eurocode 3 Solved and unsolved practice-oriented problems in every chapter, with a solutions manual for unsolved problems included for instructors Ideal for practicing professionals in civil, mechanical, and aerospace engineering, as well as upper-level undergraduates and graduate students in structural engineering courses, Structural Stability Theory and Practice: Buckling of Columns, Beams, Plates, and Shell provides readers with detailed mathematical derivations along with thorough explanations and practical examples.



Buckling Of Columns And Films


Buckling Of Columns And Films
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Author : Yuzhen Chen
language : en
Publisher:
Release Date : 2021

Buckling Of Columns And Films written by Yuzhen Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with categories.


Buckling instabilities are traditionally regarded as failure modes. However, they can also be exploited to design functional materials. This dissertation focuses on investigating the buckling of columns and films, and on harnessing these buckling instabilities to design pneumatically actuated pattern-transforming metamaterials, design reusable energy-absorbing architected materials, and achieve complex 3D morphing of LCE thin films. Four major contributions are made: First, we propose a pneumatically actuated pattern-transforming metamaterials and reveal the mechanism of the pattern transformation. Metamaterials are carefully structured materials that exhibit unusual properties relying primarily on their geometries rather than their constitutive materials. The proposed metamaterial is composed of an elastomer with periodic circular holes sealed by elastomeric membranes. Subjected to negative pressures, it can undergo pattern transformation, yielding large transformation strains. Such pattern transformation is triggered by a buckling instability and can be broadly tuned by the geometry of the metamaterial. Here we numerically, analytically and experimentally investigate the effects of geometry on the pattern transformation. Our finite element simulations indicate that the thickness of the slenderest wall and the pattern of the holes play key roles in determining the critical load for the pattern transformation, the transformation strain, and the transformation type. To quantify the effects of these geometric parameters, we further analytically model the pattern transformation of the metamaterial by simplifying it to a network of rigid rectangles linked by deformable beams. Finally, we experimentally characterize the pattern transformation of the metamaterials with different geometric parameters. The experimental, numerical, and analytical results are in good agreement. Our work provides design guidelines for this metamaterial. Secondly, we numerically show that a straight hyperelastic column under axial compression exhibits complex buckling behavior. As its width-to-length ratio increases, the column can undergo transitions from continuous buckling, like the Euler buckling, to snapping-through buckling, and eventually to snapping-back buckling. In particular, we numerically and experimentally identify a new snapping-back mode of column buckling. We develop an analytical discrete model to reveal that snapping-back buckling results from strong coupling between stretching and bending. Besides, we analytically determine the critical width-to-length ratios for the transitions of buckling modes using a general continuum mechanics-based asymptotic post-buckling analysis in the framework of finite elasticity. A phase diagram is constructed to demarcate the different buckling modes of axially compressed columns. Thirdly, by harnessing the newly discovered snapping-back buckling, we design a new class of reusable energy-absorbing architected material. Subjected to an axial compression, a wide hyperelastic column can discontinuously buckle, snapping from one stable equilibrium state to another, leading to energy dissipation, while upon unloading, it can completely recover its undeformed state. Making use of this property, we design an energy-absorbing architected material by stacking layers of wide hyperelastic columns, and fabricating it by multi-material 3D printing and sacrificial molding. Characterized by quasi-static and drop tests, the material shows the capability of energy dissipation and impact force mitigation in a reusable, self-recoverable, and rate-independent manner. A theory is established to predict the energy-absorbing performance of the material and the influence of the column geometry and layer number. Wide tunability of the peak force, energy dissipation and stability of the material is further demonstrated. Our work provides new design strategies for developing reusable energy-absorbing materials and opens new opportunities for improving their energy dissipation capacities. Finally, we achieve well-defined 3D shapes by buckling flat liquid crystal elastomer (LCE) thin sheets subjected to in-plane nonuniform stresses. Shape morphing of flat thin sheets to well-defined 3D shapes is an effective method of fabricating complex 3D structures, and LCEs are an attractive platform for shape morphing due to their ability to rapidly undergo large deformations. Here we model the buckling-induced 3D shape formation from a thin LCE sheet with prescribed in-plane stretch profiles. The sheet is modeled as a non-Euclidean plate, in which the prescribed metric tensor cannot be realized in a flat configuration and thus no stress-free configuration exists even in the absence of external loads or constraints. Under the thin plate limit, when the stretching energy dominates, we solve both the forward and inverse problems, i.e. determine the 3D shapes under prescribed stretch profiles, and determine the stretch profiles for desired 3D shapes, respectively. In the condition of a finite thickness of the sheet, the resulting 3D shapes are determined by the interplay between both the stretching and the bending energies. For a sheet with a small but finite thickness, we predict the 3D shapes for prescribed stretch profiles, and identify the critical thicknesses at which the transition from the flat to buckled configurations occurs. The theoretical predicted 3D shapes agree closely with the ones from both finite element simulations and experiments. Our analysis sheds light on the design of the shape morphing of LCE sheets, and provide quantitative predictions on the 3D shapes of programmed LCE sheets upon stimuli for various applications.



Investigation Of The Buckling Of Columns By The Photoelastic Method Of Stress Analysis


Investigation Of The Buckling Of Columns By The Photoelastic Method Of Stress Analysis
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Author : Samuel H. Smith
language : en
Publisher:
Release Date : 1961

Investigation Of The Buckling Of Columns By The Photoelastic Method Of Stress Analysis written by Samuel H. Smith and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with Buckling (Mechanics) categories.




Inelastic Buckling Of Columns Of Varying Section


Inelastic Buckling Of Columns Of Varying Section
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Author : Robert Eugene Newton
language : en
Publisher:
Release Date : 1951

Inelastic Buckling Of Columns Of Varying Section written by Robert Eugene Newton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1951 with categories.




The Inelastic Buckling Of Columns Subjected To Dynamic Loadings


The Inelastic Buckling Of Columns Subjected To Dynamic Loadings
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Author : Billy J. Hartz
language : en
Publisher:
Release Date : 1956

The Inelastic Buckling Of Columns Subjected To Dynamic Loadings written by Billy J. Hartz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1956 with Buckling (Mechanics) categories.




Exact Solutions For Buckling Of Structural Members


Exact Solutions For Buckling Of Structural Members
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Author : C.M. Wang
language : en
Publisher: CRC Press
Release Date : 2004-07-27

Exact Solutions For Buckling Of Structural Members written by C.M. Wang and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-07-27 with Technology & Engineering categories.


The study of buckling loads, which often hinges on numerical methods, is key in designing structural elements. But the need for analytical solutions in addition to numerical methods is what drove the creation of Exact Solutions for Buckling of Structural Members. It allows readers to assess the reliability and accuracy of solutions obtained by nume



Buckling Of Columns


Buckling Of Columns
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Author : C. M. Wang
language : en
Publisher:
Release Date : 1990

Buckling Of Columns written by C. M. Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Buckling (Mechanics) categories.