Relevant bibliographies by topics / Buckling (Mechanics) Cylinders

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Buckling (Mechanics) Cylinders'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Buckling (Mechanics) Cylinders.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Buckling (Mechanics) Cylinders"

1

Kim, Y. S., G. A. Kardomateas, and A. Zureick. "Buckling of Thick Orthotropic Cylindrical Shells Under Torsion." Journal of Applied Mechanics 66, no. 1 (March 1, 1999): 41–50. http://dx.doi.org/10.1115/1.2789167.

Full text
Abstract:
A three-dimensional elasticity solution to the problem of buckling of orthotropic cylindrical shells under torsion is presented. A mixed form of the Galerkin method with a series of Legendre polynomials in the thickness coordinate has been applied to solve the governing differential equations. The accuracy of existing shell theory solutions has been assessed through a comparison study for both isotropic and orthotropic cylinders. For isotropic cylinders the solutions based on the Donnell shell theory were found to predict nonconservative values for the critical loads. As the circumferential wave numbers increase, shell theory solutions provide more accurate values. For orthotropic cylinders, the classical shell theory predicts much higher critical loads for a relatively short and thick cylinder, while the shear deformation theories provide results reasonably close to the elasticity solutions. Detailed data are also presented for the critical torsional loads over a wide range of length ratios and radius ratios for isotropic, glass/epoxy, and graphite/epoxy cylinders.
APA, Harvard, Vancouver, ISO, and other styles
2

Kollár, László P. "Buckling of Anisotropic Cylinders." Journal of Reinforced Plastics and Composites 13, no. 11 (November 1994): 954–75. http://dx.doi.org/10.1177/073168449401301101.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Stedile Filho, Paulo, José Humberto S. Almeida, and Sandro C. Amico. "Carbon/epoxy filament wound composite drive shafts under torsion and compression." Journal of Composite Materials 52, no. 8 (July 31, 2017): 1103–11. http://dx.doi.org/10.1177/0021998317722043.

Full text
Abstract:
Composite cylinders to be used as half shafts must satisfy several requirements, such as critical speed, critical buckling torque, and load carrying ability. This study focused on the investigation of carbon fiber reinforced epoxy composite cylinders produced by filament winding to be used as half shafts. A preliminary torsional test in a [±45]5 cylinder was performed and three other laminates were chosen for the study: [±22/±45], [±89/±45], and [±45/±45]. Radial and longitudinal compression tests were performed. Mechanical analysis has been carried out using analytical and numerical approaches, and good correlation was found between them and the experimental values. The [±45/±45] cylinder showed the best performance under torsional loading, as expected, as well as radial and longitudinal compression, but not critical buckling torque.
APA, Harvard, Vancouver, ISO, and other styles
4

El‐Bkaily, Marwan, and Ralf Peek. "Load Shortening in Plastic Buckling of Cylinders." Journal of Engineering Mechanics 118, no. 9 (September 1992): 1892–906. http://dx.doi.org/10.1061/(asce)0733-9399(1992)118:9(1892).

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Guo, Zhangxin, Zhonggui Li, Junjie Cui, Yongcun Li, and Yunbo Luan. "The effect of winding patterns on the mechanical behavior of filament-wound cylinder shells." Multidiscipline Modeling in Materials and Structures 16, no. 3 (November 11, 2019): 508–18. http://dx.doi.org/10.1108/mmms-03-2019-0059.

Full text
Abstract:
Purpose The purpose of this paper is to present a finite element analysis (FEA) of filament-wound composites, as well as application of these materials. Design/methodology/approach In this paper, a new finite element method of filament-wound composite is presented. The stress and strain fields in the composite cylinders are analyzed using the ABAQUS software packages for considering the filament undulation and crossover. The paper presented results of buckling load of composite cylinders with different types of filament-winding patterns. Findings The result of the example shows that the stress distributions are uniform along the cylinder length and around the circumference when the analytical approach is based on the conventional FEA. The stress distributions are not uniform along the cylinder length and around the circumference for considering the filament undulation and crossover. The stress units are arranged in a regular geometric pattern around circumference and along the axis of rotation. The analysis of the effect of filament-winding mosaic patterns on the mechanical characteristics of composite cylindrical is presented in the paper. Originality/value The stress and strain fields in the composite cylinders were analyzed for considering the filament undulation and crossover. The buckling load of composite cylinders with different types of filament-winding patterns was presented in this paper.
APA, Harvard, Vancouver, ISO, and other styles
6

Rikards, R. B., and A. K. Chate. "Geometrically nonlinear pre-buckling state of anisotropic cylinders." Soviet Applied Mechanics 21, no. 12 (December 1985): 1188–96. http://dx.doi.org/10.1007/bf00888181.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Zhang, Pu, and Yiming Fu. "Torsional buckling of elastic cylinders with hard coatings." Acta Mechanica 220, no. 1-4 (April 1, 2011): 275–87. http://dx.doi.org/10.1007/s00707-011-0482-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Groh, R. M. J., and A. Pirrera. "On the role of localizations in buckling of axially compressed cylinders." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 475, no. 2224 (April 2019): 20190006. http://dx.doi.org/10.1098/rspa.2019.0006.

Full text
Abstract:
The collapse of axially compressed cylinders by buckling instability is a classic problem in engineering mechanics. We revisit the problem by considering fully localized post-buckling states in the form of one or multiple dimples. Using nonlinear finite-element methods and numerical continuation algorithms, we trace the evolution of odd and even dimples into one axially localized ring of circumferentially periodic diamond-shaped waves. The growth of the post-buckling pattern with varying compression is driven by homoclinic snaking with even- and odd-dimple solutions intertwined. When the axially localized ring of diamond-shaped buckles destabilizes, additional circumferential snaking sequences ensue that lead to the Yoshimura buckling pattern. The unstable single-dimple state is a mountain-pass point in the energy landscape and therefore forms the smallest energy barrier between the pre-buckling and post-buckling regimes. The small energy barrier associated with the mountain-pass point means that the compressed, pre-buckled cylinder is exceedingly sensitive to perturbations once the mountain-pass point exists. We parameterize the compressive onset of the single-dimple mountain-pass point with a single non-dimensional parameter, and compare the lower-bound buckling load suggested by this parameter with over 100 experimental data points from the literature. Good correlation suggests that the derived knockdown factor provides a less conservative design load than NASA's SP-8007 guideline.
APA, Harvard, Vancouver, ISO, and other styles
9

He, Ji-Huan. "Generalized variational principles for buckling analysis of circular cylinders." Acta Mechanica 231, no. 3 (December 4, 2019): 899–906. http://dx.doi.org/10.1007/s00707-019-02569-7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Savoia, M., and J. N. Reddy. "Post-buckling Behavior of Stiffened Cross-Ply Cylindrical Shells." Journal of Applied Mechanics 61, no. 4 (December 1, 1994): 998–1000. http://dx.doi.org/10.1115/1.2901599.

Full text
Abstract:
The post-buckling of stiffened, cross-ply laminated, circular determine the effects of shell lamination scheme and stiffeners on the reduced load-carrying capacity. The effect of geometric imperfection is also included. The analysis is based on the layerwise shell theory of Reddy, and the “smeared stiffener” technique is used to account for the stiffener stiffness. Nu cylinders under uniform axial compression is investigated to merical results for stiffened and unstiffened cylinders are presented, showing that imperfection-sensitivity is strictly related to the number of nearly simultaneous buckling modes.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Buckling (Mechanics) Cylinders"

1

Du, Poujol Geraldine Touche. "Buckling of short, thin-walled cylinders, as applied to storage tanks." Thesis, 2001. http://hdl.handle.net/10413/5249.

Full text
Abstract:
This is an investigation of the buckling characteristics of short, thin-walled cylinders. This study was required as large storage tanks, which were converted from Boating roof to fixed roofed tanks, were found to buckle when severe atmospheric temperature drops and thus pressure differentials occurred. These severe ambient temperature changes are characteristic of the Highveld in South Africa where the tanks in question are situated. Since this modification is an uncommon procedure, codes of practice for storage vessels do not cover this type of cylinder. For the same reason, research performed in this field is limited. Buckling due to axial loading, lateral external pressure, hydrostatic pressure and a combination of axial loading and hydrostatic pressure are explored in this study. To compare with and verify theory, existing research for each case is examined, and the Finite Element Analysis package MSC Nastran used to determine trends. In some cases, to the best of the author's knowledge, no research exists and numerical analysis is performed to establish the relationships present in those cases. The study is extended to include the design of imperfect cylinders, as defined in the tank code AD Merkblatter where it is stated as being dependant on the major and minor diameters of the imperfect section . The study is also extended to the case of variable wall thickness cylinders, where the thickness variation is symmetrical about the axis of the cylinder.
Thesis (M.Sc.)-University of Natal, Durban, 2001.
APA, Harvard, Vancouver, ISO, and other styles
2

Bardi, Francois C. "Plastic buckling and collapse of circular cylinders under axial compression." Thesis, 2006. http://hdl.handle.net/2152/2669.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lyman, Theodore Clarence. "Post-Buckled Stability and Modal Behavior of Plates and Shells." Diss., 2012. http://hdl.handle.net/10161/5803.

Full text
Abstract:

In modern engineering there is a considerable interest in predicting the behavior of post-buckled structures. With current lightweight, aerospace, and high performance applications, structural elements frequently operate beyond their buckled load. This is especially true of plates, which are capable of maintaining stability at loads several times their critical buckling load. Additionally, even structures such as cylindrical shells may be pushed into a post-buckled range in these extreme applications.

Because of the nature of these problems, continuation methods are particularly well suited as a solution method. Continuation methods have been extensively applied to a range of problems in mathematics and physics but have been used to a lesser extent in engineering problems. In the present work, continuation methods are used to solve a variety of buckling and stability problems of discrete dynamical systems, plates and cylinders. The continuation methods, when applied to dynamic mechanical systems, also provide very useful information regarding the modal behavior of the structure, including linearized natural frequencies and mode shapes as a by-product of the solution method.

To verify the results of the continuation calculations, the commercial finite element code ANSYS is used as an independent check. To confirm previously unseen stable equilibrium shapes for square plates, a set of experiments on polycarbonate plates is also presented.


Dissertation
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Buckling (Mechanics) Cylinders"

1

Chen, Qishi. Bending strength of longitudinally stiffened steel cylinders. Edmonton, Canada: Dept. of Civil Engineering, University of Alberta, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Roman, V. G. Postbuckling behavior of thin steel cylinders under transverse shear. Edmonton, Alta., Canada: Dept. of Civil Engineering, University of Alberta, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Hyer, M. W. Innovative design of composite structures: Axisymmetric deformations of unsymmetrically laminated cylinders loaded in axial compression : semiannual status report. Blacksburg, Va: College of Engineering, Virginia Polytechnic Institute and State University, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Buckling tests of a 10-foot diameter stiffened cylinder with rectangular cutouts. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Frederick, Carder, and Langley Research Center, eds. Buckling tests of a 10-foot diameter stiffened cylinder with rectangular cutouts. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Frederick, Carder, and Langley Research Center, eds. Buckling tests of a 10-foot diameter stiffened cylinder with rectangular cutouts. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1987.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Ghosh, Ashok Kumar. Buckling of cantilever cylindrical shells subjected to unsymmetrical lateral pressure. 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

W, Hyer M., Starnes James H, and United States. National Aeronautics and Space Administration., eds. Numerical and experimental investigation of the bending response of thin-walled composite cylinders. Blacksburg, Va: College of Engineering, Virginia Polytechnic Institute and State University, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Buckling (Mechanics) Cylinders"

1

Pagano, N. J., J. C. Halpin, and J. M. Whitney. "Tension Buckling of Anisotropic Cylinders." In Solid Mechanics and Its Applications, 17–30. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-017-2233-9_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Soldatos, K. P., and J. Q. Ye. "Three-Dimensional Buckling Analysis of Orthotropic Cylinders Subjected to Thermo-Mechanical Loading." In Solid Mechanics and Its Applications, 299–304. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8494-4_41.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

V. Ramasamy and A. M. Junaid Basha. "Multistage Hydraulic Cylinder Buckling Analysis by Classical and Numerical Methods with Different Mounting Conditions." In Fluid Mechanics and Fluid Power – Contemporary Research, 901–10. New Delhi: Springer India, 2016. http://dx.doi.org/10.1007/978-81-322-2743-4_85.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

CHEUNG, E. W., and R. C. TENNYSON. "Buckling of Composite Sandwich Cylinders Under Axial Compression." In Studies in Applied Mechanics, 151–81. Elsevier, 1988. http://dx.doi.org/10.1016/b978-0-444-70474-0.50012-4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

WANG, R., and C. Q. RU. "AN ENERGY CRITERION FOR THE DYNAMIC PLASTIC BUCKLING OF CIRCULAR CYLINDERS UNDER IMPULSIVE LOADING." In Metal Forming and Impact Mechanics, 213–23. Elsevier, 1985. http://dx.doi.org/10.1016/b978-0-08-031679-6.50020-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Buckling (Mechanics) Cylinders"

1

Madhavan, S., V. Mehra, C. D. Sijoy, S. Pahari, and S. Chaturvedi. "Magnetomechanical Instability and Buckling Failure in Hollow Al-6061 Cylinders." In 5th International Congress on Computational Mechanics and Simulation. Singapore: Research Publishing Services, 2014. http://dx.doi.org/10.3850/978-981-09-1139-3_397.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Baierle de Azevedo, Cristiano, Frederico Eggers, Heitor Feitosa Flores, Sandro Amico, and José Humberto Almeida Júnior. "On the importance of the filament winding pattern of composite cylinders in axial compression: damage and buckling analyses." In 7th International Symposium on Solid Mechanics. ABCM, 2019. http://dx.doi.org/10.26678/abcm.mecsol2019.msl19-0177.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Suresh, A., R. Deepak Suresh Kumar, H. Mohamed Jaasim, B. Tamilarasan, N. Mugilvarnan, and A. Vignesh. "Buckling analysis of 3D printed ABS thin cylinder at different percentage of infill’s." In PROCEEDINGS OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN MECHANICAL AND MATERIALS ENGINEERING: ICRTMME 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0025512.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Chang, Gary H., Yahya Modarres-Sadeghi, Kostas Karazis, Gary T. Williams, Victor Hatman, and Brett Matthews. "Fluid-Structure Interaction Within a Fuel Assembly Subjected to Seismic Excitation." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38954.

Full text
Abstract:
The interaction between fuel assemblies during a seismic or loss of coolant accident (LOCA) event is directly associated with safety and reliability issues for all types of nuclear reactors. This study concentrates on the modeling of a single fuel assembly represented by a cylinder subjected to external flow and an external forcing function at the base. The model investigates the response of the fuel assembly using continuum mechanics model. The general behavior of a cylinder supported at both ends and subjected to axial flow is summarized: The cylinder undergoes several flow-induced instabilities as the flow velocity increases. These instabilities start with a pitchfork bifurcation, resulting in the buckling of the cylinder. At higher flow velocities, period-doubling and torus instabilities are observed as well, eventually leading to chaotic oscillations of the cylinder. It is shown that an increased confinement results in lower critical flow velocities for the first point of instability, resulting in buckling at lower flow velocities. The cylinder response to a base excitation is also considered and it is shown that the response amplitude can change depending on the frequency of base excitation.
APA, Harvard, Vancouver, ISO, and other styles
5

Lu, Qingzhen, Zhixun Yang, Yucheng Yang, Jun Yan, and Qianjin Yue. "Study on the Mechanism of Bird-Cage Buckling of Armor Wires Based on Experiment." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61669.

Full text
Abstract:
Armor wires which are typical spiral wound structures are widely applied to flexible structures in ocean engineering, such as flexible pipes and umbilical cables. Birdcage buckling phenomenon would appear under the condition of damage of the cover sheath and strength tapes when armor wires are subjected to high axial compression which exceeding its critical load. In this paper a special experiment device is designed to simulate the armor wires winding a cylinder. Based on the experiment, the birdcage buckling mechanism of spiral wound steel wire is analyzed. The global configuration time-history of spirally wound steel wire is recorded to find the critical buckling load with the increasing compression displacement. At the same time, strain state at the critical position is analyzed, which could provide a reference for curved beam’s buckling research. Moreover, sensitivity analysis of critical buckling load is investigated with consideration of some influencing factors such as spiral wound radius, length and pitch. Finally, the relationships between them and critical buckling compression load are quantified. The experimental results could guide the anti-buckling design of armor wires for flexible pipe or umbilical cables.
APA, Harvard, Vancouver, ISO, and other styles
6

Vaziri, A., H. Nayeb-Hashemi, and H. E. Estekanchi. "Buckling of the Composite Cracked Cylindrical Shells Subjected to Axial Load." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-43476.

Full text
Abstract:
Cylindrical shells constitute the main structural components in pressure vessels and pipelines. Cylindrical shells made of fiber-reinforced composites are now being considered in the design of many components due to their high specific strength and stiffness. Buckling is one of the main failure considerations, when designing the cylindrical shells. The buckling behavior of the composite cylindrical shells can severely the compromised by introducing defect in the structure, due to high stress field generated around these defects. Defects could be generated during service due to cyclic loading or during manufacturing. A reliable operation of these structures require to understand the effects of these defects on the bucking of cylindrical shells. Finite Element Analyses are performed to study the buckling behaviour of composite cylindrical shells with and without a crack, under an axial compressive loading. The effects of the plies angle on the buckling loads and buckling mode shapes of the composite cylindrical shells are studied. Furthermore, the effects of the crack length and its orientation on the buckling loads of the composite cylindrical shells are investigated. The results indicate that the global buckling loads and mode shapes of the cracked composite shells are not significantly sensitive to the presence of the defect, for shells with a crack length less than a critical length. This critical crack length depends on the crack orientation, composite ply angles, ply sequence and the cylinder geometry. For shells with a crack longer than the critical length, the buckling load reduces and the local buckling mode at the crack tip prevail the buckling behavior of the composite cylindrical shell. The optimum ply angle for attaining the maximum buckling load is specified.
APA, Harvard, Vancouver, ISO, and other styles
7

Taebi, Amirtaha, Fardin Khalili, and Amirtaher Taebi. "Buckling Analysis of a Functionally Graded Implant Model for Treatment of Bone Fractures: A Numerical Study." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71066.

Full text
Abstract:
In orthopedics, the current internal fixations often use screws or intramedullary rods that obstruct bone material. In this paper, an internal implant was modelled as a hollow cylindrical sector made of a functionally graded material (FGM), which will hold bone in place with less obstruction of bone surface. Functionally graded implant was considered as an inhomogeneous composite structure, with continuously compositional variation from a ceramic at the outer diameter to a metal at the inner diameter. The buckling behavior of the implant was numerically analyzed using a finite element analysis software (ANSYS), and the structural stability of the implant was assessed. The buckling critical loads were calculated for different fixation lengths, cross sectional areas, and different sector angles. These critical loads were then compared with the critical loads of an FGM hollow cylinder with the same cross sectional area. Results showed that the critical load of the hollow cylindrical sector was ∼ 63%, ∼ 70%, and ∼ 73% of the hollow cylinder for different fixation lengths, cross sectional areas, and sector angles, respectively. Further investigations are warranted to study the relation between the composition profile and the implant stability, which can lead to batter internal fixation solutions.
APA, Harvard, Vancouver, ISO, and other styles
8

Abdo, Jamil, and Hamed Al-Sharji. "Investigation of Inducing Vibration to Reduce Friction of Coiled Tubing in Deep Drilling Operations." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-40007.

Full text
Abstract:
This work examines the buckling behavior of constrained horizontal tubular in a cylinder subjected to axial compression force. Such configurations are of interest to coiled tubing (CT) and conventional hydrocarbon drilling. When compression force is applied beyond a critical value the coiled tubing (CT) will buckle forming sinusoidal wave and with increasing the load the CT ultimately goes into a helical configuration. The friction is introduced due to the contact between the CT and the borehole wall. Increasing the CT friction eventually leads to lock-up length beyond which the drilling cannot proceed further. Vibration is a well-known technique to reduce friction between contacting bodies in many engineering systems. An in-house experimental setup is developed to imitate the wellbore being drilled with the presence of drilling fluids and vibrating facility that has the capability to vibrate the CT axially. The setup is employed to examine the effects of amplitude and frequency of vibration on the axial force transfer and weight on bit (WOB) at normal and high temperature environments. Results show that both amplitude and frequency have significant effects in reducing the friction and they alter the buckling behavior on both normal and high temperature.
APA, Harvard, Vancouver, ISO, and other styles
9

Estefen, S. F., T. A. Netto, and I. P. Pasqualino. "Limit States for Deepwater Flowlines and Risers: Review of the Research Activities at the Submarine Technology Laboratory/COPPE." In ASME 2003 22nd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2003. http://dx.doi.org/10.1115/omae2003-37421.

Full text
Abstract:
Research activities related to the limit states of flowlines and risers conducted at the Submarine Technology Laboratory / COPPE in cooperation with PETROBRAS are presented. The motivation for most of the research programs is associated with deepwater challenges arising from the rigid pipe installations at Campos Basin. Initially ultimate strength of intact pipes are investigated together with aspects related to residual strength, buckling propagation and buckle arrestors. Based on the experimental results numerical models have been correlated in order to be used to generate results for full scale steel pipes. Ultimate strength curves have been then produced as well as the analytical equation representative of these curves. Experimental tests of buckling propagation for small and large scale pipes have also been performed to obtain the bias factor for different equations proposed in the literature. Based on this study an equation for propagation pressure has been recommended. In addition, ring and cylinder buckle arrestors have been tested in order to propose an expression relating crossing over pressure with the arrestor geometries. An overview of the studies aiming at establishing the influence of the reeling method of installation on the failure modes of flowlines and steel catenary risers is presented. It is emphasized the influence of cross-section ovality and weld defect amplification due to plastic bending on collapse pressure and fatigue life, respectively. Finally, the development of a new concept of sandwich pipe for ultra deepwater, combining structural resistance and thermal insulation is discussed.
APA, Harvard, Vancouver, ISO, and other styles
10

Yamaguchi, Kouya, and Sachiko Ishida. "Design and Amplitude Dependence of Resonance Frequency of Origami-Inspired Vibration Isolators With Quasi-Zero-Stiffness Characteristic." In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22171.

Full text
Abstract:
Abstract This study aims to design two types of vibration isolators, with different spring mechanisms, using a foldable structure that is based on a cylinder torsional buckling pattern, and evaluate the vibration isolation performance of each design. Vibration isolation is achieved through nonlinear spring characteristics of the isolators, which have zero spring stiffness, achieved by attaching a linear spring to the foldable isolator structure. The two vibration isolators differ in the mechanical elements that constitute the foldable structure, which undergo tensile forces as the structure folds. For the first isolator, the mechanical elements are represented only by tension springs, which appropriately undergo tension. For the second isolator, the mechanical elements are designed so that embedded compression springs within the elements compress under tension, thus enabling the elements to work as tension springs. The excitation experiment results revealed that the different spring mechanisms produced equivalent resonance frequencies but different damping effects at the resonance and higher frequencies. When oscillations with multiple amplitudes were input, larger input amplitudes were found to correspond to lower resonance frequencies for both isolators. This trend contradicts that described in the nonlinear vibration theory modeled by the Duffing equation, and was determined to be caused by hysteresis of the spring phenomena in the vibration isolators.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Buckling (Mechanics) Cylinders' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography