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Journal articles on the topic 'Postcritical behavior'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Gurdjiev, A. V., M. P. Tretiakov, and V. E. Vildeman. "Analysis of Deformation and Destruction of Layered-Fibrous Composite Materials under Complex Loading." PNRPU Mechanics Bulletin, no. 5 (December 15, 2024): 14–26. https://doi.org/10.15593/perm.mech/2024.5.02.

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The paper studies effects of postcritical behavior of composites during the occurrence and equilibrium growth of cracks. The experimental study focuses on the influence of additional vibration effects and initial accumulated cyclic damage to the structure on the stability of the deformation processes, postcritical behavior and failure of layered-fiber woven polymer composites, using the example of fiberglass and carbon fiber, which are used in the manufacture of critical structures for various purposes. A comparison of the deformation and failure processes of carbon fiber with reinforcement sc

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2

Luongo, Angelo, and Manuel Ferretti. "Postcritical behavior of a discrete Nicolai column." Nonlinear Dynamics 86, no. 4 (2016): 2231–43. http://dx.doi.org/10.1007/s11071-016-3075-8.

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3

Eterovic, Adrian L., Luis A. Godoy, and Carlos A. Prato. "Initial Postcritical Behavior of Thin‐Walled Angle Section Columns." Journal of Engineering Mechanics 116, no. 11 (1990): 2573–77. http://dx.doi.org/10.1061/(asce)0733-9399(1990)116:11(2573).

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4

Fa, Lin, Ray L. Brown, and John P. Castagna. "Anomalous postcritical refraction behavior for certain transversely isotropic media." Journal of the Acoustical Society of America 120, no. 6 (2006): 3479–92. http://dx.doi.org/10.1121/1.2360419.

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5

ARCINIEGA, R. A., P. B. GONÇALVES, and J. N. REDDY. "BUCKLING AND POSTBUCKLING ANALYSIS OF LAMINATED CYLINDRICAL SHELLS USING THE THIRD-ORDER SHEAR DEFORMATION THEORY." International Journal of Structural Stability and Dynamics 04, no. 03 (2004): 293–312. http://dx.doi.org/10.1142/s0219455404001240.

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In the present work the buckling and postbuckling behavior of laminated cylindrical shells under axial compression and lateral pressure loading are investigated. A nonlinear theory for thin cylinders incorporating the effects of transverse shear deformation is employed. A modal solution based on the Koiter theory is utilized to derive the nonlinear equilibrium equations for the postcritical behavior of the shell. The Rayleigh–Ritz method is used to obtain analytical solutions for the critical load through algebraic routines written in Maple. Prebuckling and postbuckling equations are also solv

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6

Murtazaliev, G. M., and M. M. Payzulaev. "NONLINEAR BEHAVIOR CALCULATION ALGORITHM FOR THIN-WALLED SYSTEMS." Herald of Dagestan State Technical University. Technical Sciences 46, no. 2 (2019): 176–84. http://dx.doi.org/10.21822/2073-6185-2019-46-2-176-184.

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Objectives The emergence of modern high-strength materials leads to the creation of thin-walled structures in various fields of technology. To obtain the necessary information about their behavior under load, one should analyze all the characteristic features encountered at all stages of their loading - at the initial (initial) stage of their operation, taking into account one or more types of nonlinearities, find possible critical states and, depending on the type of stability loss, study the nature of the initial stage of postcritical deformation. Based on an algorithm combining approximate

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7

Wildemann, V. E., M. P. Tretyakov, and A. I. Mugaratov. "Modeling the deformation process of a plate with a stress concentrator taking into account the postcritical stage of material deformation." PNRPU Mechanics Bulletin, no. 3 (December 15, 2020): 32–40. http://dx.doi.org/10.15593/perm.mech/2020.3.04.

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Postcritical deformation of a material is a process which is characterized by a decrease of stress during growing deformations as a result of accumulation of structural damage. The design becomes unable to withstand the external load only when zones with weakened connections are developed enough. Evolution of postcritical deformation zones can occur with an increase of the external load applied to the construction. It means that taking into account the softening of the material allows determining the strength and deformation reserves of constructions more accurately. The mathematical formulati

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8

Semenyuk, N. P., and N. B. Zhukova. "Stability and Postcritical Behavior of Corrugated Cylindrical Panels Under External Pressure." International Applied Mechanics 49, no. 6 (2013): 702–14. http://dx.doi.org/10.1007/s10778-013-0604-8.

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9

Semenyuk, N. P. "Stability and initial postcritical behavior of shallow cylindrical shells of composite materials." Soviet Applied Mechanics 23, no. 6 (1987): 542–47. http://dx.doi.org/10.1007/bf00887019.

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10

Beghini, Alessandro, Zdeněk P. Bažant, Anthony M. Waas, and Shiladitya Basu. "Initial postcritical behavior of sandwich columns with low shear and transverse stiffness." Composites Part B: Engineering 39, no. 1 (2008): 159–64. http://dx.doi.org/10.1016/j.compositesb.2007.02.018.

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11

Iannelli, Andrea, Andres Marcos, and Mark Lowenberg. "Nonlinear Robust Approaches to Study Stability and Postcritical Behavior of an Aeroelastic Plant." IEEE Transactions on Control Systems Technology 27, no. 2 (2019): 703–16. http://dx.doi.org/10.1109/tcst.2017.2779110.

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12

Manuylov, Gaik, Sergey Kosytsyn, and Maxim Begichev. "ON THE LOSS OF STABILITY AND POSTCRITICAL EQUILIBRIUM OF COMPRESSED THIN-WALLED ANGLE BARS." International Journal for Computational Civil and Structural Engineering 18, no. 1 (2022): 109–18. http://dx.doi.org/10.22337/2587-9618-2022-18-1-109-118.

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Angle bars in compression are quite common in building and transport structures. However, the peculiarities of their behavior during the loss of stability and in supercritical equilibrium have not been sufficiently studied even within the limits of elastic deformations. The paper shows solutions for the stability of symmetric and asymmetric rods with an angle profile. The development of post-critical deformations is shown. The features of the behavior of the rods, obeying the hypotheses of V.Z. Vlasov.

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13

Semenyuk, N. P., and V. M. Trach. "Stability and Postcritical Behavior of Cylindrical Composite Shells with Local Imperfections Under External Pressure." International Applied Mechanics 52, no. 6 (2016): 624–34. http://dx.doi.org/10.1007/s10778-016-0783-1.

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14

Meng, Xiangxi, and Weitao Liu. "Study on Failure Process and Permeation Evolution of Single-Cracked Rock." Advances in Materials Science and Engineering 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/7915652.

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To evaluate the mechanical properties and permeation evolution of cracked rock mass, failure evolution tests were designed by RFPA software for single-cracked rock mass with (i) different inclination angles under uniaxial compression and (ii) different confining pressures and pore pressures under triaxial compression. The results show the following: (1) Angle of the crack significantly affects the crack propagation mode and slightly affects the bearing capacity of rock. During the crack propagation, the peak of permeation is delayed at the peak of stress. The stress-strain curve shows a differ

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15

Pellicano, F., and F. Vestroni. "Nonlinear Dynamics and Bifurcations of an Axially Moving Beam." Journal of Vibration and Acoustics 122, no. 1 (1999): 21–30. http://dx.doi.org/10.1115/1.568433.

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The present paper analyzes the dynamic behavior of a simply supported beam subjected to an axial transport of mass. The Galerkin method is used to discretize the problem: a high dimensional system of ordinary differential equations with linear gyroscopic part and cubic nonlinearities is obtained. The system is studied in the sub and super-critical speed ranges with emphasis on the stability and the global dynamics that exhibits special features after the first bifurcation. A sample case of a physical beam is developed and numerical results are presented concerning the convergence of the series

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16

Semenyuk, N. P., and N. B. Zhukova. "Solution of the problem of the initial postcritical behavior of cylindrical shells reinforced by stringers." Soviet Applied Mechanics 27, no. 8 (1991): 805–12. http://dx.doi.org/10.1007/bf00889394.

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17

Tretyakov, M. P., and V. E. Wildemann. "Experimental study of the rheological behavior of steels at the postcritical deformation stage at high temperature." Procedia Structural Integrity 18 (2019): 816–22. http://dx.doi.org/10.1016/j.prostr.2019.08.231.

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18

Fernandes, William Luiz, Daniel Boy Vasconcellos, and Marcelo Greco. "Dynamic Instability in Shallow Arches under Transversal Forces and Plane Frames with Semirigid Connections." Mathematical Problems in Engineering 2018 (June 28, 2018): 1–14. http://dx.doi.org/10.1155/2018/1985907.

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Structural engineering demands increasingly lighter systems, which can cause instability problems and compromise performance. A high slenderness index of a structural element makes it susceptible to instability. It is important to understand the problem, the limits of stability, and its postcritical behavior. An example that can occur in collapsed arches under a cross load is the dynamic snap-through behavior, where the structure in a given equilibrium condition jumps to a new remote equilibrium setting, causing usually sudden curvature. The semirigid connections are a source of physical nonli

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19

Tretyakov, M. P., D. S. Lobanov, and V. E. Wildemann. "Study of The Regularities of Postcritical Behavior and Failure of Specimens in the Tests of Composite Materials." Procedia Structural Integrity 17 (2019): 865–71. http://dx.doi.org/10.1016/j.prostr.2019.08.115.

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20

Obodan, N. I., E. F. Prokopalo, and V. A. Gromov. "Stability and postcritical behavior of two-layer cylindrical shells with non-adherence area subjected to axial compression." Reports of the National Academy of Sciences of Ukraine, no. 3 (March 25, 2014): 70–74. http://dx.doi.org/10.15407/dopovidi2014.03.070.

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21

Murtazaliev, G. M., and M. M. Paizulaev. "Mathematical modeling of the process of nonlinear deformation of thin-walled structures." Herald of Dagestan State Technical University. Technical Sciences 51, no. 4 (2025): 209–16. https://doi.org/10.21822/2073-6185-2024-51-4-209-216.

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Objective. The objective is to develop a unified method for solving a general nonlinear boundary value problem associated with discontinuous phenomena, which allows identifying all the characteristic features of the behavior of thin-walled systems under load. The issues of nonlinear deformation, loss of stability of the initial equilibrium shape and post-critical behavior are considered using the example of a thin spherical shell. Method. The problem is solved by numerical and analytical methods, representing a set of methods of catastrophe theory and the finite difference method of increased

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22

Draidi, Z., T. T. Bui, A. Limam, H. V. Tran, and A. Bennani. "Buckling Behavior of Metallic Cylindrical Shell Structures Strengthened with CFRP Composite." Advances in Civil Engineering 2018 (August 7, 2018): 1–13. http://dx.doi.org/10.1155/2018/4231631.

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The objective of this study is to evaluate the effect of a CFRP composite layer on the buckling behavior of metallic cylindrical shells. To enhance the bearing capacity of steel shells, classical solutions consider internal or external metallic stiffeners (stringers and/or rings) welded or riveted to the shell. Here, an external skin of composite material which wraps the whole metallic skin of the shell is studied. To be valid for metallic shells structures (storage tanks like silos) as well as for metal pipes (gas or oil pipeline), the procedure for setting up and implementing the composite m

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23

Tretyakov, M. P., T. V. Tretyakova, and V. E. Wildemann. "Regularities of mechanical behavior of steel 40Cr during the postcritical deformation of specimens in condition of necking effect at tension." Frattura ed Integrità Strutturale 12, no. 43 (2017): 146–54. http://dx.doi.org/10.3221/igf-esis.43.11.

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24

Li, Wenjie, and Shujin Laima. "Experimental Investigations on Nonlinear Flutter Behaviors of a Bridge Deck with Different Leading and Trailing Edges." Applied Sciences 10, no. 21 (2020): 7781. http://dx.doi.org/10.3390/app10217781.

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Recently, the nonlinear flutter behavior of long-span suspension bridges has attracted attention. Unlike the classical theory of bridge flutter, the stable limit cycle oscillations (LCO) have occurred for some bluff aerodynamic configurations when the inflow velocity exceeded a specific critical value. To explore the influence of aerodynamic configurations on flutter behaviors a series of flutter tests for spring-suspended sectional models were conducted. When the leading edges and trailing edges with various shapes were installed at the sectional models, different flutter types occurred. In t

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25

Wu, Yafei, and George A. McMechan. "Estimation of fracture height using microseismicity associated with hydraulic fracturing." GEOPHYSICS 63, no. 3 (1998): 908–17. http://dx.doi.org/10.1190/1.1444401.

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The ratio of horizontal‐to‐vertical (H/V) particle velocity in background microseismic radiation associated with hydraulic fracturing is substantially higher in the dilatant, low‐velocity fractured zone than it is outside. This provides a useful diagnostic for determining the height of the fractured zone. Numerical synthesis of guided wave phenomena within the low‐velocity fractured zone accounts for much of the observed behavior, but measured H/V patterns are not totally consistent with either pure tensile or pure shear sources. A composite model containing both tensile‐compressional sources

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26

Kormendi, F., and M. Dietrich. "Nonlinear waveform inversion of plane‐wave seismograms in stratified elastic media." GEOPHYSICS 56, no. 5 (1991): 664–74. http://dx.doi.org/10.1190/1.1443083.

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We present a method for determining the elastic parameters of a horizontally stratified medium from its plane‐wave reflectivity. The nonlinear inverse problem is iteratively solved by using a generalized least‐squares formalism. The proposed method uses the (relatively) fast convergence properties of the conjugate gradient algorithm and achieves computational efficiency through analytical solutions for calculating the reference and perturbational wavefields. The solution method is implemented in the frequency‐wave slowness domain and can be readily adapted to various source‐receiver configurat

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27

Muenchrath, Anna. "The Signal in the Noise: Hermeneutics and/of Computational Literary Sociology." Journal of Literary Theory 19, no. 1 (2025): 149–67. https://doi.org/10.1515/jlt-2025-2007.

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Abstract In literary sociology, texts have often been treated as a product of human history, and therefore as symptoms of the forces that have shaped them. This essay considers a single strain of computational literary studies that uses predictive modeling to locate differences between two corpora of texts, determining, for example, what makes a text literary, reviewable, or prize-worthy. This type of computational literary studies is sociological in nature but changes the epistemological status of the text from a symptom of the conditions of its production to a source of evidence supporting c

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28

Uroš, Mario, Damir Lazarević, Marija Demšić, and Josip Atalić. "Stability Analysis of a Simple Strut with Elastic Springs Through Sensitivity Surfaces and Gradients." International Journal of Structural Stability and Dynamics 18, no. 12 (2018): 1850161. http://dx.doi.org/10.1142/s0219455418501614.

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The global elastic stability of a strut supported by three inclined springs is studied using the exact displacement geometry. The discrete phenomenological model in the theory of stability, described by Thompson and Gaspar, exhibits different postbuckling behaviors, depending on the initial geometry for large imperfections, and this has various applications in engineering. Using the total potential energy method, a system of nonlinear algebraic equations is derived for the nondissipative system. The arc length method is adopted to solve the system of nonlinear equations, considering the stabil

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29

Feklistova, E. V., A. I. Mugatarov, and V. E. Wildemann. "Simulation of Fracture in Deformable Bodies with Stress Concentrators Taking into Account the Statistical Distribution of Ultimate Strength in Structural Elements." PNRPU Mechanics Bulletin, no. 4 (December 15, 2024): 70–83. https://doi.org/10.15593/perm.mech/2024.4.07.

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To solve the problem of ensuring the strength and safety of critical structures, it is required to study their mechanical behavior at the structural level not only under normal operating conditions but also under destruction. Various methods are used to simulate destruction processes; one of them implies the reduction of the stiffness of finite elements when fulfilling the destruction criterion. When using this approach, it is important to take the heterogeneous distribution of strength characteristics of structural elements in the body’s volume into account. The paper presents a numerical stu

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30

Manuylov, Gaik A., Sergey B. Kositsyn, and Irina E. Grudtsyna. "Geometrically nonlinear analysis of the stability of the stiffened plate taking into account the interaction of eigenforms of buckling." Structural Mechanics of Engineering Constructions and Buildings 17, no. 1 (2021): 3–18. http://dx.doi.org/10.22363/1815-5235-2021-17-1-3-18.

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The aims of this work are a detailed consideration in a geometrically nonlinear formulation of the stages of the equilibrium behavior of a compressed stiffened plate, taking into account the interaction of the general form of buckling and local forms of wave formation in the plate or in the reinforcing ribs, comparison of the results of the semi-analytical solution of the system of nonlinear equations with the results of the numerical solution on the Patran-Nastran FEM complex of the problem of subcritical and postcritical equilibrium of a compressed stiffened plate. Methods. Geometrically-non

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31

Peshkhoev, I. M., B. V. Sobol, and A. M. Levchenkov. "ON BRANCHING OF EQUILIBRIUMS OF A COMPRESSED ELASTIC ROD ON A NONLINEAR ELASTIC BASE." Problems of Strength and Plasticity 84, no. 4 (2023): 461–69. http://dx.doi.org/10.32326/1814-9146-2023-85-4-461-469.

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The problem of buckling and postcritical behavior of a compressed elastic rod on a non-linearly elastic foundation under the action of a small transverse pressure is considered. The study is carried out on the basis of a non-linear equilibrium equation obtained taking into account the exact formula for the curvature of the axial line of the rod, while the curvature is approximated by a third-order asymptotic formula with respect to deflection. The boundary conditions correspond to free pinching or a movable hinged support of the ends of the rod. The influence of a small transverse load and the

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32

Levyakov, S. V. "SECONDARY BUCKLING OF A HEATED CIRCULAR PLATE." PNRPU Mechanics Bulletin, no. 4 (December 15, 2022): 22–29. http://dx.doi.org/10.15593/perm.mech/2022.4.03.

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Upon heating, a circular plate with immovable edge exhibits buckling, which results in ax-isymmetric postcritical bending. Progressive axisymmetric bending due to increasing thermal load in the postbuckling range leads to substantial redistribution of the stresses in the plate and occurrence of high compressive circumferential stresses in a narrow zone adjacent to the plate edge. In this case, secondary buckling can occur resulting in unsymmetric stress-strain state. The aim of the present work is to study stability behavior of the postbuckling axisymmetric equilibrium configurations of a circ

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33

NAKANE, SHIZUO. "Postcritical sets and saddle basic sets for Axiom A polynomial skew products on." Ergodic Theory and Dynamical Systems 33, no. 4 (2012): 1124–45. http://dx.doi.org/10.1017/s0143385712000193.

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AbstractWe investigate the link between postcritical behaviors and the relations of saddle basic sets for Axiom A polynomial skew products on $\mathbb {C}^2$, and characterize various properties concerning the three kinds of accumulation sets defined by DeMarco and Hruska [Axiom A polynomial skew products of $\mathbb {C}^2$ and their postcritical sets. Ergod. Th. & Dynam. Sys.28(2008), 1749–1779] in terms of the saddle basic sets. We also give a new example of higher degree.

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34

Mladenov, K. A. "On the critical and postcritical behaviour of plane frames." Journal of Constructional Steel Research 21, no. 1-3 (1992): 97–113. http://dx.doi.org/10.1016/0143-974x(92)90021-6.

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35

Bigoni, D., D. Misseroni, G. Noselli, and D. Zaccaria. "Effects of the constraint's curvature on structural instability: tensile buckling and multiple bifurcations." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 468, no. 2144 (2012): 2191–209. http://dx.doi.org/10.1098/rspa.2011.0732.

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Bifurcation of an elastic structure crucially depends on the curvature of the constraints against which the ends of the structure are prescribed to move, an effect that deserves more attention than it has received so far. In fact, we show theoretically and provide definitive experimental verification that an appropriate curvature of the constraint over which the end of a structure has to slide strongly affects buckling loads and can induce: (i) tensile buckling; (ii) decreasing- (softening), increasing- (hardening) or constant-load (null stiffness) postcritical behaviour; and (iii) multiple bi

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36

Bolotin, V. V., A. A. Grishko, and M. Yu Panov. "Effect of damping on the postcritical behaviour of autonomous non-conservative systems." International Journal of Non-Linear Mechanics 37, no. 7 (2002): 1163–79. http://dx.doi.org/10.1016/s0020-7462(01)00148-2.

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37

Borisovich, Andrei, Jolanta Dymkowska, and Czesław Szymczak. "Buckling and postcritical behaviour of the elastic infinite plate strip resting on linear elastic foundation." Journal of Mathematical Analysis and Applications 307, no. 2 (2005): 480–95. http://dx.doi.org/10.1016/j.jmaa.2004.11.030.

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38

Kosarev, Igor V., Sergey V. Dmitriev, Alexander S. Semenov, and Elena A. Korznikova. "Stability of Strained Stanene Compared to That of Graphene." Materials 15, no. 17 (2022): 5900. http://dx.doi.org/10.3390/ma15175900.

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Stanene, composed of tin atoms, is a member of 2D-Xenes, two-dimensional single element materials. The properties of the stanene can be changed and improved by applying deformation, and it is important to know the range of in-plane deformation that the stanene can withstand. Using the Tersoff interatomic potential for calculation of phonon frequencies, the range of stability of planar stanene under uniform in-plane deformation is analyzed and compared with the known data for graphene. Unlike atomically flat graphene, stanene has a certain thickness (buckling height). It is shown that as the te

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39

Korentz, Jacek. "Influence of Geometric Imperfections on Buckling Resistance of Reinforcing Bars during Inelastic Deformation." Materials 13, no. 16 (2020): 3473. http://dx.doi.org/10.3390/ma13163473.

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This paper presents the results of numerical simulations on three main factors and their influence on the buckling resistance of reinforcing bars and on their behaviour in the range of postcritical deformations. These three factors are the shape of initial deformation, the amplitude of geometric imperfection and the slenderness of bars. The analysis was made of bars fixed on both sides for three initial shapes of deformation between adjacent stirrups, four amplitudes of geometric imperfections and eight bar slendernesses. The results of the numerical analyses carried out showed that the factor

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40

Lushnikov, A. A. "Postcritical behavior of a gelling system." Physical Review E 88, no. 5 (2013). http://dx.doi.org/10.1103/physreve.88.052120.

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41

Dhanoriya, Abhilash, Manjur Alam, and Sudib Kumar Mishra. "Postcritical Behavior of Nonlocal Strain Gradient Arches: Formulation and Differential Quadrature Solution." Journal of Engineering Mechanics 149, no. 2 (2023). http://dx.doi.org/10.1061/jenmdt.emeng-6727.

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42

Pasam, Anil, Daniel Tudball Smith, David Burton, and Mark C. Thompson. "Flow over two inline rough cylinders in the postcritical regime." Physics of Fluids 36, no. 9 (2024). http://dx.doi.org/10.1063/5.0221390.

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This study investigates the flow behavior over roughened inline cylinders for postcritical flow, a parameter space with relatively little prior scrutiny. Two cylinders of the same relative surface roughness, ks/D=1.9×10−3, separated by a pitch (i.e., L, distance between the centers of two cylinders) between 1.175≤L/D≤10 are studied at Reynolds numbers from 3×105 to 6×105 using unsteady surface pressure measurements. As pitch ratio is increased from L/D=1.175, CD of the downstream cylinder increases sharply at (L/D)c=3.25. This critical pitch ratio (L/D)c is toward the lower end of the reported

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43

Staroverov, Oleg, Artur Mugatarov, Anastasia Sivtseva, et al. "Fatigue behavior of pultruded fiberglass tubes under tension, compression and torsion." Frattura ed Integrità Strutturale 18, no. 69 (2024). http://dx.doi.org/10.3221/igf-esis.69.09.

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This work is devoted to an experimental investigation of fatigue behavior of pultruded fiberglass tubes under uniaxial tension, compression and torsion. Static tests were carried out; a presence of postcritical deformation stage during torsion is noted. Regularities of inhomogeneous strain fields evolution are analyzed using digital image correlation method. Fatigue curves are built for four cyclic loading modes: tension-tension, compression-compression, tension-compression and torsion. An analysis of specimens' fractures is carried out, typical damaging mechanisms are revealed. Residual dynam

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44

Pasam, Anil, Daniel Tudball Smith, David Burton, and Mark C. Thompson. "Aerodynamics of two rough circular cylinders placed side by side subject to postcritical flow." Physics of Fluids 37, no. 1 (2025). https://doi.org/10.1063/5.0241365.

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This investigation reports on the flow behavior of, and the resulting forces on, two roughened cylinders in the postcritical regime. Specifically, two cylinders of the same surface roughness of ks/D=1.9×10−3, placed apart at a cross-stream pitch (separation) of 1.18≤L/D≤6, are studied at a postcritical Reynolds number of 3×105 using unsteady pressure measurements. The two cylinders behave nearly independently at L/D=6 and the forces on them are the same within experimental uncertainty until the pitch ratio is reduced to L/D=2.25. The gap flow between the two cylinders becomes biased at L/D≤2,

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45

Marcollo, H., A. E. Potts, D. R. Johnstone, P. Pezet, and P. Kurts. "Drag Reduction and Vortex-Induced Vibration Suppression Behavior of Longitudinally Grooved Suppression Technology Integral to Drilling Riser Buoyancy Units." Journal of Offshore Mechanics and Arctic Engineering 140, no. 6 (2018). http://dx.doi.org/10.1115/1.4038933.

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Drilling risers are regularly deployed in deep water (over 1500 m) with large sections covered in buoyancy modules. The smooth cylindrical shape of these modules can result in significant vortex-induced vibration (VIV) response, causing an overall amplification of drag experienced by the riser. Operations can be suspended due to the total drag adversely affecting top and bottom angles. Although suppression technologies exist to reduce VIV (such as helical strakes or fairings), and therefore reduce VIV-induced amplification of drag, only fairings are able to be installed onto buoyancy modules f

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Lim, Jae-Yong, and Hilary Bart-Smith. "Dynamic Buckling Response of Long Plates for the Prediction of Local Plate Buckling of Corrugated Core Sandwich Columns." Journal of Applied Mechanics 82, no. 11 (2015). http://dx.doi.org/10.1115/1.4031279.

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An analytical model predicting the dynamic local buckling failure of plates with a large dimension in the longitudinal direction compressed at a constant rate was proposed. The model began with the hypothesis that the proposed analytical approach could be an alternative methodology to approximate the dynamic local plate buckling response of constituent plates of corrugated core sandwich columns. Prior to the model development, four preliminary finite-element (FE) simulations were conducted to observe the typical dynamic response of the sandwich columns having thin core web plates or thin face

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Awrejcewicz, J., A. V. Krysko, S. P. Pavlov, M. V. Zhigalov, and V. A. Krysko. "Stability of the Size-Dependent and Functionally Graded Curvilinear Timoshenko Beams." Journal of Computational and Nonlinear Dynamics 12, no. 4 (2017). http://dx.doi.org/10.1115/1.4035668.

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The size-dependent model is studied based on the modified couple stress theory for the geometrically nonlinear curvilinear Timoshenko beam made from a functionally graded material having its properties changed along the beam thickness. The influence of the size-dependent coefficient and the material grading on the stability of the curvilinear beams is investigated with the use of the setup method. The second-order accuracy finite difference method is used to solve the problem of nonlinear partial differential equations (PDEs) by reducing it to the Cauchy problem. The obtained set of nonlinear

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Fazelzadeh, S. A., and A. Mazidi. "Nonlinear Aeroelastic Analysis of Bending-Torsion Wings Subjected to a Transverse Follower Force." Journal of Computational and Nonlinear Dynamics 6, no. 3 (2011). http://dx.doi.org/10.1115/1.4003288.

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This paper deals with the nonlinear aeroelastic behaviors of bending-torsion wings subjected to a transverse follower force. The nonlinear structural wing formulation is based on von Karman large deformation theory. In order to accurately consider the spanwise location of the follower force, the generalized function theory is used. Also, Peter’s finite-state unsteady aerodynamic model is considered. The governing equations are obtained using Hamilton’s principle. Furthermore, the Galerkin method is applied to convert the partial differential equations into a set of nonlinear ordinary different

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Pasam, Anil, Daniel Tudball Smith, John D. Holmes, David Burton, and Mark C. Thompson. "The influence of surface roughness on postcritical flow over circular cylinders revisited." Journal of Fluid Mechanics 975 (November 21, 2023). http://dx.doi.org/10.1017/jfm.2023.846.

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This work investigates the effect of surface roughness on cylinder flows in the postcritical regime and reexamines whether the roughness Reynolds number ( $Re_{k_s}$ ) primarily governs the aerodynamic behaviour. It has been motivated by limitations of many previous investigations, containing occasionally contradictory findings. In particular, many past studies were conducted with relatively high blockage ratios and low cylinder aspect ratios. Both of these factors appear to have non-negligible effects on flow behaviour, and particularly fluctuating quantities such as the standard deviation of

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Schumacher, Aaron, and Anton Matzenmiller. "A material model for thick, rate‐dependent adhesives with delocalized softening." PAMM, October 4, 2023. http://dx.doi.org/10.1002/pamm.202300032.

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AbstractThis contribution is dedicated to the development and implementation of a material model to describe the deformation behaviour of assembly adhesives. These assembly adhesives are usually used with thicknesses of several millimetres up to centimetres in order to compensate for large relative displacements of joining parts. These large displacements can be resisted by assembly adhesives, since they have a low shear modulus and thus a high strain until failure above their glass transition temperature. As a basis, the isothermal and isotropic hyperelasticity theory is used to describe the

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