Relevant bibliographies by topics / Snap-Through

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

Academic literature on the topic 'Snap-Through'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 March 2023

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Journal articles on the topic "Snap-Through"

1

Arakawa, Kazuki, Francesco Giorgio-Serchi, and Hiromi Mochiyama. "Snap Pump: A Snap-Through Mechanism for a Pulsatile Pump." IEEE Robotics and Automation Letters 6, no. 2 (April 2021): 803–10. http://dx.doi.org/10.1109/lra.2021.3052416.

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TAKAHASHI, Shuki, Yuki NISHIMURA, Tomoyuki YAMAGUCHI, and Hiromi MOCHIYAMA. "Aerial Snap: A Compact Snap-through Hammering Mechanism for UAV." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2021 (2021): 2P1—K12. http://dx.doi.org/10.1299/jsmermd.2021.2p1-k12.

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Jiang, Wen-An, and Li-Qun Chen. "Snap-through piezoelectric energy harvesting." Journal of Sound and Vibration 333, no. 18 (September 2014): 4314–25. http://dx.doi.org/10.1016/j.jsv.2014.04.035.

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Gomez, Michael, Derek E. Moulton, and Dominic Vella. "Dynamics of viscoelastic snap-through." Journal of the Mechanics and Physics of Solids 124 (March 2019): 781–813. http://dx.doi.org/10.1016/j.jmps.2018.11.020.

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Kim, Hyeonseong, Qitao Zhou, Daegyoum Kim, and Il-Kwon Oh. "Flow-induced snap-through triboelectric nanogenerator." Nano Energy 68 (February 2020): 104379. http://dx.doi.org/10.1016/j.nanoen.2019.104379.

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Chandra, Yenny, Ilinca Stanciulescu, Thomas Eason, and Michael Spottswood. "Numerical pathologies in snap-through simulations." Engineering Structures 34 (January 2012): 495–504. http://dx.doi.org/10.1016/j.engstruct.2011.10.013.

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Abedi, K., and G. A. R. Parke. "Progressive Collapse of Single-Layer Braced Domes." International Journal of Space Structures 11, no. 3 (September 1996): 291–306. http://dx.doi.org/10.1177/026635119601100302.

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Progressive collapse may be defined as the “widespread propagation of instability following damage to a portion of a structure”. In this paper, the dynamic propagation of local snap-through in single-layer braced domes is discussed. Dynamic snap-through and simultaneous multi-snap-through are described. Loading conditions for the occurrence of local snap-through have also been presented and a procedure for modelling this phenomenon using finite element analysis is developed. The central point in the proposed procedure is that the effect of dynamic snap-through is represented by providing appropriate initial velocities at the nodes in which snap-through as occurred. Using this procedure, the likelihood of progressive collapse is evaluated. In addition, some numerical investigations have also been presented.
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Panigrahi, Smruti R., Brian P. Bernard, Brian F. Feeny, Brian P. Mann, and Alejandro R. Diaz. "Snap-through twinkling energy generation through frequency up-conversion." Journal of Sound and Vibration 399 (July 2017): 216–27. http://dx.doi.org/10.1016/j.jsv.2017.03.031.

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Chen, X., and S. A. Meguid. "Snap-through buckling of initially curved microbeam subject to an electrostatic force." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 471, no. 2177 (May 2015): 20150072. http://dx.doi.org/10.1098/rspa.2015.0072.

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In this paper, the snap-through buckling of an initially curved microbeam subject to an electrostatic force, accounting for fringing field effect, is investigated. The general governing equations of the curved microbeam are developed using Euler–Bernoulli beam theory and used to develop a new criterion for the snap-through buckling of that beam. The size effect of the microbeam is accounted for using the modified couple stress theory, and intermolecular effects, such as van der Waals and Casimir forces, are also included in our snap-through formulations. The snap-through governing equations are solved using Galerkin decomposition of the deflection. The results of our work enable us to carefully characterize the snap-through behaviour of the initially curved microbeam. They further reveal the significant effect of the beam size, and to a much lesser extent, the effect of fringing field and intermolecular forces, upon the snap-through criterion for the curved beam.
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10

Yan, Sun-ting, Xiaoli Shen, and Zhijiang Jin. "Static and dynamic symmetric snap-through of non-uniform shallow arch under a pair of end moments considering critical slowing-down effect." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 16 (June 10, 2019): 5735–62. http://dx.doi.org/10.1177/0954406219855105.

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This paper presents analytical analysis of static and dynamic symmetric snap-through of non-uniform shallow circular shallow arch under a pair of end moments with the same magnitude. The non-uniformity is characterized by dividing the arch into three piecewise constant-stiffness segments. Hamilton's principle is used to derive the governing differential equations by assuming negligible axial inertia. The snap-through load and snap-through criterion are analyzed in detail and by an index plot, the stiffer center case is shown to behave distinctly when stiffer end case is compared. The dynamic snap-through when the moment is slightly higher than the snap-through moment is analyzed analytically by a perturbation method, and a critical slowing effect is observed when the moment is approaching to the snap-through moment. Comparison with dynamic FEA shows a good agreement with the analytical result and analysis on theoretical finite time blow-up phenomenon reveals that when geometric parameters are corresponding to the critical snap-through condition, the initial quadratic phase's motion is slow and relatively blow-up phase's motion is fast. The analytical formulations have been extended to include two limiting cases including rigid end case and rigid center case by using the constrained Hamilton's principle by Lagrangian multipliers. Snap-through criteria analysis reveals closed-form criterion for rigid center case and an asymptotic result for rigid end case. This paper serves to enhance the knowledge on snap-through and critical slowing down for shallow arches with non-uniformity under end moments.
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Dissertations / Theses on the topic "Snap-Through"

1

Gomez, Michael. "Ghosts and bottlenecks in elastic snap-through." Thesis, University of Oxford, 2018. http://ora.ox.ac.uk/objects/uuid:11ab7b19-ee4b-4cd6-ac9a-116363a4e4d7.

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Snap-through is a striking instability in which an elastic object rapidly jumps from one state to another. It is seen in the leaves of the Venus flytrap plant and umbrellas flipping on a windy day among many other examples. Similar structures that snap-through are used to generate fast motions in soft robotics, switches in micro-scale electronics and artificial heart valves. Despite the ubiquity of snap-through in nature and engineering, its dynamics is usually only understood qualitatively. In this thesis we develop analytical understanding of this dynamics, focussing on how the mathematical structure underlying the snap-through transition controls the timescale of instability. We begin by considering the dynamics of 'pull-in' instabilities in microelectromechanical systems (MEMS) - a type of snap-through caused by electrostatic forces in which the motions are dominated by fluid damping. Using a lumped-parameter model, we show that the observed time delay near the pull-in transition is a type of critical slowing down - a so-called 'bottleneck' due to the 'ghost' of a saddle-node bifurcation. We obtain a scaling law describing this slowing down, and, in the process, unify a large range of experiments and simulations that exhibit delay phenomena during pull-in. We also investigate the pull-in dynamics of MEMS microbeams, extending the lumped-parameter approach to incorporate the details of the beam geometry. This provides a model system in which to understand snap-through of a continuous elastic structure due to external loading. We develop a perturbation method that systematically exploits the proximity to pull-in to reduce the governing equations to a simpler evolution equation, with a structure that highlights the saddle-node bifurcation. This allows us to analyse the bottleneck dynamics in detail, which we compare with previous experimental and numerical data. The remainder of the thesis is concerned with the dynamics of snap-through in macroscopic systems. In particular, we explore the extent to which dissipation is required to explain anomalously slow snap-through. Considering an elastic arch as an archetype of a snapping system, we use the perturbation method developed earlier to show that two bottleneck regimes are possible, depending delicately on the relative importance of external damping. In particular, we show that critical slowing down occurs even in the absence of damping, leading to a new scaling law for the snap-through time that is confirmed by elastica simulations and experiments. In many real systems material viscoelasticity is present to some degree. Finally, we examine how this influences the snap-through dynamics of a simple truss-like structure. We present a regime diagram that characterises when the timescale of snap-through is controlled by viscous, elastic or viscoelastic effects.
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2

Cheng, Ching-Chuan. "Prediction of snap-through instability under harmonic excitation." Thesis, Virginia Tech, 1990. http://hdl.handle.net/10919/42077.

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3

Penketgorn, Thiwa. "Snap-through of a shallow arch subjected to random excitation." Diss., Virginia Polytechnic Institute and State University, 1988. http://hdl.handle.net/10919/82651.

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The motion of a shallow arch subjected to random loading is investigated. It is expected that the arch will vibrate about its initial stable configuration under low intensity loading, but will snap back and forth about its horizontal axis under high intensity loading. The parameter of interest is the time of first snap-through of the shallow arch under random load. This is defined as the time taken for the arch to snap to the other side of the horizontal axis. The statistics of the time to first snap-through, such as the mean time to failure as well as its probability distribution. are determined. Most of the work treats one response mode. In the first part of the study, the critical random loading for dynamic snap-through of the shallow arch was investigated using the method of computer simulation. The random excitation was assumed to be a stationary white-noise process. The primary object was to determine the critical power spectral density parameter of the random excitations. The vanishing or diminishing of the average frequency of snap-through was used to estimate this parameter. An exact value of the critical random loading parameter could not be obtained using this criterion since it was based on numerical integration of the non-linear equation of motion and computer simulation which is expensive and time-consuming. However, the critical value or range of critical values of intensity of random excitations could be estimated with a reasonable degree of accuracy. The second part of the study dealt with the first-passage problem. The exact solution of the first-passage problem is available for only a limited class of problems. In this study, the solution was obtained using numerical approximation techniques and computer simulation. For an oscillator subjected to white noise, the displacement and velocity process are governed by the Fokker-Planck-Kolmogorov (FPK) equation. The finite difference method was used to solve the derived FPK equation of the energy envelope of the equation of motion of the arch subjected to white-noise excitation. Solutions were obtained in terms of the mean time to failure, and the probability distribution function of the time to failure. A computer program for the Monte Carlo simulation of the response of the arch subjected to random loads was also developed. A large number of records of the random excitations were simulated and these were used as input in the numerical integration of the equation of motion. The Runge-Kutta method was used to obtain the time history of the displacement response, and the time at which the response exceeded the critical threshold was recorded. Statistics of the time to first snap-through were obtained and these were then used to select an empirical distribution model for the first-passage time. The results of the approximate analysis were compared with those from the simulation. Results of both methods were in close agreement. The effect of including more than one mode in the equation of motion was also studied. Multi-mode approximations of up to four modes were considered in the analysis. It was found that the results of the multi-mode approximations are significantly different from the one-mode approximation. The effect of nonstationary random excitation on the time to first snap-through was also investigated using computer simulation.
Ph. D.
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4

Hourlier-Fargette, Aurélie. "Soft interfaces : from elastocapillary snap-through to droplet dynamics on elastomers." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066089/document.

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Dans cette thèse à l’interface entre élasticité et capillarité, nous présentons tout d’abord une instabilité élastique, le claquage, revisitée dans un contexte élastocapillaire. En déposant une goutte d’eau sous une lamelle flambée en position basse, nous parvenons à déclencher une instabilité de claquage à contresens de la gravité. Cette démonstration de la prédominance des effets capillaires à petite échelle s’accompagne d’une étude des positions d’équilibre et de la stabilité de systèmes goutte-lamelle. Nous démontrons l’influence importante de la taille et de la position de la goutte le long de la lamelle, puis étendons notre étude au cas de bulles ou de gouttes condensées à partir de vapeur d’eau. Enfin, nous nous intéressons à l’aspect dynamique de l’instabilité, qui est dictée principalement par l’élasticité, y compris dans le cas élastocapillaire.Nous mettons ensuite en évidence un phénomène surprenant : la dynamique de descente d’une goutte d’eau sur un élastomère silicone présente deux régimes successifs, caractérisés par deux vitesses différentes. Nous montrons que les chaînes libres non réticulées présentes dans l’élastomère sont à l’origine de cette dynamique inattendue. La goutte est progressivement recouverte par des chaînes de silicone, et sa vitesse change brutalement lorsqu’une concentration surfacique critique est atteinte, ce qui se traduit par une transition brutale de tension de surface. Nous nous intéressons aux vitesses de gouttes dans les deux régimes ainsi qu’aux échelles de temps mises en jeu lors de l’extraction de chaînes non réticulées, et montrons que l’extraction de ces chaînes se produit au niveau de la ligne triple
This thesis focuses on interactions between liquids and elastic solids. We first revisit the snap-through instability from an elastocapillary point of view, showing that capillary forces are able to counterbalance gravity by inducing snap-through with a droplet deposited below a downward buckled elastic strip clamped at both ends. Equilibrium, stability, and dynamics of drop-strip systems are investigated, demonstrating the influence of droplet size and droplet position along the buckled strip, and showing that capillarity is driving the system toward instability but elasticity is ruling the subsequent dynamics. Spin-off versions of the experiment are also designed, including a humidity-controlled mechanical switch and upscaled experiments using soap bubbles.We then focus on interactions between silicone elastomers and aqueous droplets to understand the mechanisms underlying an unexpected two-regime droplet dynamics observed on vertical silicone elastomer plates. After demonstrating that this two-regime dynamics is due to the presence of uncrosslinked oligomers in the elastomer, we show that the speed transition coincides with a surface tension transition. A quantitative study of the droplets speeds in the two regimes is performed, and the timescale needed for uncrosslinked oligomers to cover the water-air interface is investigated both for sessile and moving droplets. We eventually show that uncrosslinked chains are extracted from the elastomer at the water - air - silicone elastomer triple line, and demonstrate that extraction occurs in various setups such as partially immersed silicone elastomer plates or air bubbles sliding up PDMS planes immersed in a water bath
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Mota, Merlo Marina. "Evolutionary evidence of chromosomal rearrangements through SNAP : Selection during Niche AdaPtation." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-449171.

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The Selection during Niche AdaPtation (SNAP) hypothesis aims to explain how the gene order in bacterial chromosomes can change as the result of bacteria adapting to a new environment. It starts with a duplication of a chromosomal segment that includes some genes providing a fitness advantage. The duplication of these genes is preserved by positive selection. However, the rest of the duplicated segment accumulates mutations, including deletions. This results in a rearranged gene order. In this work, we develop a method to identify SNAP in bacterial chromosomes. The method was tested in Salmonella and Bartonella genomes. First, each gene was assigned an orthologous group (OG). For each genus, single-copy panorthologs (SCPos), the OGs that were present in most of the genomes as one copy, were targeted. If these SCPos were present twice or more in a genome, they were used to build duplicated regions within said genome. The resulting regions were visualized and their possible compatibility with the SNAP hypothesis was discussed. Even though the method proved to be effective on Bartonella genomes, it was less efficient on Salmonella. In addition, no strong evidence of SNAP was detected in Salmonella genomes.
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BORMANN, FLAVIO LAGE. "SNAP OFF OF EMULSION DROPS IN THE FLOW THROUGH A CONSTRICTED CAPILLARY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=17235@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
A formação de emulsões está presente em diversas atividades industriais, incluindo o setor petrolífero. A análise de quebra de gota em capilares com garganta remete ao estudo da formação de emulsões e suas características em meios porosos. Esta dissertação apresenta um modelo numérico baseado nas equações de conservação, e na teoria da lubrificação. O modelo foi desenvolvido considerando as duas fases como fluidos Newtonianos, e o sistema de equações diferencias resultante foi resolvido pelo método de diferenças finitas centrais, implementado em ambiente MATLAB®. Determina-se o campo de pressão dos fluidos, bem como sua interface ao longo do tempo. A análise da influência de parâmetros, tanto da geometria do capilar quanto das propriedades dos fluidos, indicou comportamentos adequados em comparação com os dados disponíveis na literatura. Observou-se que a viscosidade do fluido da fase contínua possui maior influência no tempo de formação de gota, do que a viscosidade do fluido da fase dispersa. O tempo de quebra de gota da fase dispersa varia linearmente com a viscosidade da fase contínua. Observa-se que o raio da garganta do capilar influencia diretamente no tempo de quebra de gota, onde para raios menores, o tempo de formação de gota será menor do que para um raio de garganta maior, devido a um gradiente de pressão capilar mais elevado.
The snap off of emulsion drops appears in several industrial activities, including the oil industry. The analysis snap off in a constricted capillary is related to the study of emulsion formation and its characteristics in a porous media. This thesis presents a numerical model based on the conservation equations and lubrification theory developed for Newtonians fluids. The resulting system of differential equations was solved by finite difference and the code implemented in MATLB®. The analysis of the effect of different parameters, such as the geometry of the capillary and the liquid proprieties, indicated appropriate behaviors in comparison to data in the literature. It was observed that the viscosity of the continuous phase fluid has a stronger influence in the snap off time than the viscosity of the dispersed phase fluid. The snap off time rises with the viscosity of the continuous phase fluid. It was observed that the variation of the radius of the neck directly influences the snap off time, where smaller throat radius leads to shorter snap-off time, due to stronger capillary pressure gradient.
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7

Tiwari, Nachiketa. "Secondary Buckling of Laminated Composite Plates." Diss., Virginia Tech, 1999. http://hdl.handle.net/10919/37789.

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The postbuckling load carrying capacity of composite plates offers immense potential to their applications for loads exceeding their primary buckling load. However, such an efficient and economical usage of these plates can be reliable only if the nonlinear postbuckling behavior of these plates, which includes a good understanding of secondary buckling, is understood thoroughly. The present investigation is an attempt to understand secondary buckling of almost square composite clamped-simply supported plates, both unstiffened as well as stiffened, in some detail. With the help of the finite element method, a large number of numerical studies have been conducted to understand the secondary buckling characteristics. The sensitivity of these characteristics to variations in boundary conditions, lamination sequence, imperfections, and stiffener geometry has been considered. It has been found that the occurrence of secondary buckling in clamped-simply supported plates under uniform end shortening critically depends on the intensity of restrictions imposed on the inplane normal displacements along the unloaded simply supported edges of the plate. These restrictions could be due to the actual boundary conditions at these edges, or due to the presence of stiffeners along these edges. It has also been found that the presence of imperfections significantly delays the event of secondary buckling. Finally, it has been found that changes in lamination sequence of the plate alter its secondary buckling characteristics in ways that are, in general, quantitative in nature. The numerical investigations were followed by a limited number of experiments involving the testing of unstiffened as well as stiffened composite plates with the intent of augmenting the confidence in the numerical predictions made. Three different lamination sequences were considered during the testing phase of this investigation. It was found that the agreement between experimental data and numerical predictions was quite good. The occurrence of secondary buckling followed the predictions closely.
Ph. D.
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8

Schultz, Marc Robert. "Use of Piezoelectric Actuators to Effect Snap-Through Behavior of Unsymmetric Composite Laminates." Diss., Virginia Tech, 2003. http://hdl.handle.net/10919/27086.

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As a new concept for morphing structures, the use of piezoelectric actuators to effect snap-through behavior of simple unsymmetric cross-ply composite laminates is examined. Many unsymmetric laminates have more than one stable room-temperature shape and can be snapped through from one stable shape to another. In this new concept for morphing structures, one or more piezoelectric actuators are bonded to unsymmetric laminates, and are then used to snap the laminate from one shape to another. The actuator would be used to change shape, but would not be required to maintain the shape. Using the Rayleigh-Ritz technique, several models are developed to predict the interaction between the base laminate and the actuator. In particular, the voltage (applied to the actuator) needed to snap the laminate is predicted. The NASA-LaRC Macro-Fiber Composite&174; (MFC&174;) actuator is chosen as the actuator of choice for this work. A laminate is manufactured, an actuator is bonded to the laminate, and experiments are performed. Since the agreement between the initial models and experimental results was not good, the models were revised. Good agreement between the predictions of the revised model and experiment is reached. Suggestions for future research directions are presented.
Ph. D.
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9

Dano, Marie-Laure. "SMA-Induced Deformations In general Unsymmetric Laminates." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/30390.

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General unsymmetric laminates exhibit large natural curvatures at room temperature. Additionally, inherent to most unsymmetric laminates is the presence of two stable configurations. Multiple configurations and stability issues arise because of the geometric nonlinearities associated with the large curvatures. The laminate can be changed from one stable configuration to the other by a simple snap-through action. This situation offers the opportunity to use shape memory alloys (SMA) attached to the laminate to generate the snap-through forces and change the shape of the laminate on command. Presented is a model which can predict SMA-induced deformations in general unsymmetric laminates and, particularly, the occurrence of the snap through. First, a methodology is developed to predict the deformations of flat general unsymmetric epoxy-matrix composite laminates as they are cooled from their elevated cure temperature. Approximations to the strain fields are used in the expression for the total potential energy, and the Rayleigh-Ritz approach is used to study equilibrium. To further study the laminate deformations, finite-element analyses are performed. Experimental results are presented which confirm the predictions of the developed theory and the finite-element analyses regarding the existence of multiple solutions and the magnitude of the deformations. Results are compared with those of several other investigators. Next, the deformation behavior of general unsymmetric laminates subjected to applied forces is studied. The principle of virtual work is used to derive the equilibrium equations relating the laminate deformations to the applied forces. By solving the equilibrium equations as a function of the force level, relations between the laminate deformations and the applied force are derived, and the force level at which the laminate changes shape is determined. Finally, an existing SMA constitutive model is implemented into the developed theory to predict the deformations of simple structures to SMA-induced forces. Experiments on a narrow aluminium plate with an externally attached SMA actuator are conducted. The experimental results show good agreement with the predictions from the developed theory. Next, the deformation behavior of general unsymmetric laminates subjected to SMA actuators is predicted using the developed theory. Experiments using SMA actuators to generate the snap through of nsymmetric laminates are conducted. Good correlation with the developed theory is obtained.
Ph. D.
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Godoy, Willians Roberto Alves de [UNESP]. "Análise de um oscilador não linear acoplado a um absorvedor tipo snap through truss (STTA)." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/97141.

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Alves Godoy, Willians Roberto, análise de um oscilador não linear acoplado a um absorvedor tipo snap through truss (stta). Bauru: Faculdade de Engenharia Mecânica, Universidade Estadual Paulista Julio de Mesquita Filho, 2011, 102 pp., Dissertação (Mestrado). Recentemente os estudos sobre os absorvedores de energia vêm ganhando importância e destaque, principalmente na indústria automobilística e aeronáutica. Esse tipo de absorvedor permite fazer o controle passivo de um sistema vibratório. Na busca por melhores resultados, verificou-se a ansiedade da utilização de absorvedores não lineares, já que estes demonstraram poder receber energia além de uma pequena faixa de freqüencia de vibração do oscilador. Neste trabalho, considera-se o sistema vibratório constituído de um controlador passivo, o absorvedor tipo snap-through truss (STTA) acoplado a um oscilador submetido à excitação de um motor elétrico com uma excentricidade e potência limitada, caracterizando um oscilador não ideal (NIO). Busca-se utilizar o absorvedor STTA como um absorvedor não linear, aproveitando sua não linearidade geométrica, e estabelecer condições para que as amplitudes de movimento do sistema principal se tornem menores em determinadas condições. O principal objetivo nesse trabalho é obter as condições em que as amplitudes de movimento do NIO são menores durante a passagem pela ressonância, atenuando o efeito Sommerfeld. Os resultados obtidos nessa situação mostraram que o STTA é eficiente na redução das amplitudes de movimento do NIO antes e dentro da região de ressonâcia. Em contrapartida, ao sair da ressonância ficou evidente que o absorvedor deve ser retirado do sistema por implicar grandes amplitudes ao NIO. Além disso, um breve estudo da atuação do STTA sobre um sistema...
In recent years studies on energy absorver in order to reduce some systems vibration amplitudes has been gaining importance and prominence. This type of absorber allows vibrating system passive control. In order to better results, it was verified the need to use non-lienar absorbers as these have been shown to receive power more than a small band of vibration frequency of the oscillator. This work considers the vibrating system that consists of a snap-through truss absorber (STTA) coupled to an oscillator under excitation of an electric motor with an eccentricity and limited power, characterizing a non-ideal oscillator (NIO). it is aimed to use the absorver STTA as non-linear absorber and establish the conditions for the motion amplitudes become smaller under certain conditions the mian system. Therefore, this work aims to determine the conditions in which the main system, while it passes through resonance, has attenuated its amplitude of moviment and do not waste energy working in this condition. The main objective of this work is to obtain the conditions under which amplitudes motion of NIO are smaller in the passage through resonance, reducing the Sommerfeld effect. The results obtained in this situation showed that the STTA is effectie to reduce amplitudes motion of NIO before and within region of resonance. In contrast, out of resonance, it was evident that absorber must be removed from the system by imply large amplitudes to the NIO. In addition, a brief study of the performance of STTA on an ideal system was performed. In this situation, the STTA showed significant results in the attenuation of amplitudes motion of the oscillator. Therefore, this work shows that the use of snap-through truss absorber is a good alternative among passive abserbers in attenuation of Sommerfeld effect in non-ideal systems
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Books on the topic "Snap-Through"

1

Ng, Chung Fai. Design guide for predicting nonlinear random response (including snap-through) of buckled plates. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1989.

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2

1932-, Simitses George J., and Lewis Research Center, eds. The dynamic aspects of thermo-elasto-viscoplastic snap-through and creep buckling phenomena. [Cleveland, Ohio?: National Aeronautics and Space Administration, Lewis Research Center, 1987.

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1932-, Simitses George J., and Lewis Research Center, eds. The dynamic aspects of thermo-elasto-viscoplastic snap-through and creep buckling phenomena. [Cleveland, Ohio?: National Aeronautics and Space Administration, Lewis Research Center, 1987.

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Center, Langley Research, ed. The analysis of non-linear dynamic behavior (including snap-through) of postbuckled plates by simple analytical solution. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1988.

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Center, Langley Research, ed. The analysis of non-linear dynamic behavior (including snap-through) of postbuckled plates by simple analytical solution. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1988.

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Company, Ottawa River Navigation, ed. Snap shots on the Ottawa River and Rideau Lakes: With many illustrations of interesting places and scenes : also a short description of the Ottawa River & points of interest to the tourist who may make the trip via the Grand River and Rideau Lakes through the most charming scenery in America between Montreal, Ottawa and Kingston. [Montreal?: s.n.], 1987.

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Company, Ottawa River Navigation, ed. Snap shots on the Ottawa River and Rideau Lakes: With many illustrations of interesting places and scenes : also a short description of the Ottawa River & points of interest to the tourist who may make the trip via the Grand River and Rideau Lakes through the most charming scenery in America between Montreal, Ottawa and Kingston. [Montreal?: s.n.], 1987.

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Snap: A Peek-Through Book of Shapes. Tiger Tales, 2014.

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Snap: A Peek-Through Book of Shapes. Little Tiger Press Group, 2015.

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Fashion History: Looking Great Through the Ages (Snap). Capstone Press, 2007.

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Book chapters on the topic "Snap-Through"

1

Greenspan, Donald. "Elastic Snap Through." In Particle Modeling, 35–41. Boston, MA: Birkhäuser Boston, 1997. http://dx.doi.org/10.1007/978-1-4612-1992-7_4.

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Wiebe, Richard, Mihaela Nistor, and Ilinca Stanciulescu. "On Euler Buckling and Snap-Through." In Nonlinear Dynamics, Volume 1, 171–74. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74280-9_17.

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Chybiński, Marcin, Andrzej Garstecki, and Katarzyna Rzeszut. "Snap-through Phenomenon of Imperfect Steel Structures." In Design, Fabrication and Economy of Metal Structures, 199–204. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-36691-8_30.

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Virgin, Lawrence N., Yue Guan, and Raymond H. Plaut. "Curved Structures That Can Elastically Snap-Through." In Nonlinear Dynamics, Volume 1, 275–77. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-74280-9_28.

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Ziegler, F., R. Heuer, and H. Irschik. "Dynamic Snap-Through and Snap-Buckling of Shear-Deformable Panels in a Random Environment." In Probabilistic Structural Mechanics: Advances in Structural Reliability Methods, 595–610. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-85092-9_39.

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Wiggers, Sine Leergaard, and Pauli Pedersen. "Large Displacements, Pre-buckling Strains, and Snap-Through." In Springer Tracts in Mechanical Engineering, 105–14. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72721-9_12.

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Yamaguchi, Tetsuo, Hiroshi Ohtsubo, and Yoshinori Sawae. "Critical Scaling and Prediction of Snap-Through Buckling." In Mathematical Analysis of Continuum Mechanics and Industrial Applications II, 51–57. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-6283-4_5.

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Ando’, Bruno, Salvatore Baglio, Vincenzo Marletta, Elisa Pergolizzi, Vittorio Ferrari, Marco Ferrari, and Adi R. Bulsara. "Nonlinear Snap-Through-Buckling Devices for Energy Harvesting from Vibrations." In Lecture Notes in Electrical Engineering, 409–13. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-09617-9_72.

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Harshavardhan, A., T. Venugopal, and Suresh Babu. "3D Surface Measurement through Easy-Snap Phase Shift Fringe Projection." In Advances in Intelligent Systems and Computing, 179–86. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-6872-0_17.

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Pascoletti, Giulia, Paolo Conti, Francesco Bianconi, and Elisabetta M. Zanetti. "Design of a Snap-Fit Joint Through a Multibody Model." In Advances on Mechanics, Design Engineering and Manufacturing IV, 533–45. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-15928-2_47.

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Conference papers on the topic "Snap-Through"

1

Wiebe, Richard, Lawrence Virgin, Ilinca Stanciulescu, and S. Spottswood. "On Snap-Through Buckling." In 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-2083.

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Feeny, Brian F., and Alejandro R. Diaz. "Twinkling Phenomena in Snap-Through Oscillators." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21584.

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Abstract Oscillatory behavior in a chain of masses connected by continuous, non-monotonic stiffness (snap-through) elements can be induced under quasi-static loading. Insight into the birth of this behavior is obtained from a single mass system. A bifurcation study shows the potential for equilibrium jumps between multiple equilibria. As such, the transients occurring under quasi-static loading do not converge to the static loading case.
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Liu, Thomas Jin-Chee, and Nai-Pin Lin. "Snap-through Behavior and Button Design." In International Conference on Industrial Application Engineering 2017. The Institute of Industrial Applications Engineers, 2017. http://dx.doi.org/10.12792/iciae2017.063.

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Hrinda, Glenn. "Snap-Through Instability Patterns in Truss Structures." In 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
18th AIAA/ASME/AHS Adaptive Structures Conference
12th. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-2611.

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Pagano, Alexander, and S. Tawfick. "The Snap-Through of Four-Fold Origami Cones." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68244.

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Some insects, such as beetles, are able to store their wings under their elytra by folding them and can rapidly deploy their wings for flight. The crease patterns of these wings allow the fold/unfold kinematics to take place using simple manipulation, and to remain stable in both configurations. It has been observed that the structures of the beetle wings are kinetically multi-stable origami. The crease pattern of these wings is comprised of a peculiar arrangement of four-fold vertices. In this manuscript, we show preliminary work towards studying the non-flat (conical) four-fold vertices observed in the wing structure using experiments and rigid origami analysis. We construct four-fold origami paper cones of varying angles and study their snap-through behavior under varying point-load configurations. From these experiments, the threshold forces, displacements and duration timescale of snap-through buckling are extracted. Similarly, we study the snap-through instability of two-dimensional (2D) arches having a vertex, which provide insights into the wing folds and are hypothesized to represent properties which facilitate the deployability of the wing. Using the pseudo-rigid body model (PRBM) [1], we numerically analyze the kinematics and potential energy of the snap-though buckling of 2D arches, and show that the model captures the kinematic behavior sufficiently well to provide insights of energetic behavior from kinematic experimental results. Overall, our approach shows promise in studying the design and kinetics of the insect wing origami, and could enable the design of bio-inspired deployable engineering structures.
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Zhang, Zhao, and Teng Li. "Snap-Through Instability of Graphene Morphology on Substrates." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-11367.

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We determine the graphene morphology regulated by substrates with herringbone surface corrugation. As the graphene/substrate interfacial bonding energy and the substrate surface roughness vary, the graphene morphology snaps between two distinct states: 1) closely conforming to the substrate and 2) remaining nearly flat on the substrate. Such a snap-through instability of graphene can potentially lead to desirable electronic properties to enable graphene-based devices.
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Haldar, Ayan, Eelco Jansen, Raimund Rolfes, and Paul Weaver. "Tailoring Snap-through Loads in Variable Stiffness Composites." In 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-2245.

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Stanciulescu, Ilinca, Yenny Chandra, and Thomas Eason. "Boundaries of Snap-Through Buckling of Curved Beams." In 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-2084.

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Haldar, Ayan, Eelco Jansen, Raimund Rolfes, and Paul Weaver. "Correction: Tailoring Snap-through Loads in Variable Stiffness Composites." In 2018 AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2018. http://dx.doi.org/10.2514/6.2018-2245.c1.

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Fei, Yaying, Lihua Chen, Xiaozhi Zhang, and Wei Zhang. "Study on the Snap-Through Behavior of Bistable Plates." In ASME 2016 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/smasis2016-9113.

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This paper aims to analyze snap-through behavior of two-layer cross-ply bistable composite laminate square plates. The analyses consider the factors of laminate thickness, temperature and external applied force. In this study, the model was performed on the basis of the classical thin plate theory, the Von Kármán large deformation theory and Principle of Virtual Work. Afterwards the statics equilibrium equation was available. Subsequently the analysis was presented by adjusting the laminate thickness for these prior factors. Through the numerical simulations with Matlab® software, the curvatures in x-direction and y-direction were calculated to investigate the snap-through behavior. Two stable cylindrical configurations and an unstable saddle shape were given with different curvatures to show the equilibrium positions. Then the figures prove the external applied distributed force plays a vital role to the snap-through behavior. The results show that under macroscopic view, the ratio of side-length to thickness is three hundred or less, as the plates are thinner, the snap-through will appear more frequently, and the external forces will be less needed.
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Reports on the topic "Snap-Through"

1

Virgin, Lawrence N., and Ilinca Stanciulescu. Snap-through and Continuation. Fort Belvoir, VA: Defense Technical Information Center, February 2012. http://dx.doi.org/10.21236/ada566217.

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Chen, Bing C., Weiya Zhang, David Johnson, Manoj Thota, Zhen Wu, Kon-Well Wang, Soobum Lee, and Fabio Semperlotti. Adaptable Structural Logic System Synthesis with Bistable Snap-Through Elements. Fort Belvoir, VA: Defense Technical Information Center, December 2012. http://dx.doi.org/10.21236/ada574780.

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RETROFITTING COLLAPSE BEHAVIOR OF DOUBLE LAYER SPACE TRUSSES AGAINST PROGRESSIVE COLLAPSE BY FORCE LIMITING DEVICES. The Hong Kong Institute of Steel Construction, December 2022. http://dx.doi.org/10.18057/ijasc.2022.18.4.8.

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Previous collapses of Double Layer Space Trusses (DLSTs) show that they are vulnerable to progressive collapse phenomenon. Under certain circumstances, a local failure can propagate throughout the structure and lead to occurring a brittle failure in the structure. Therefore, it is crucial to identify and exploit proper retrofitting methods against progressive collapse in DLSTs. In the current study, the method of utilizing Force Limiting Devices (FLDs) to improve the collapse behavior against progressive collapse have been investigated for flat DLSTs with overall collapse and dynamic snap-through. The results show that introducing FLDs to the critical members of the top layer of a flat DLST with dynamic snap-through failure mode and a member imperfection of 0.005L provides 18.2 to 23.86% load bearing increase and ductility between 1.55 to 1.67. The results also show that when the DLSTs is made of members with geometric imperfections between 0.001 L and 0.004 L, the FLDs can convert the overall collapse of the DLSTs to a ductile collapse. For this member imperfection range, the obtained data show that the method can increase the load bearing capacity of the models from 18.35to 26.8% and provide ductility between 1.56 to 1.76. The provided ductility in models with smaller member imperfection is slightly greater than those provided in models with larger member imperfection. In the current study the activation level of FLDs are selected between 85 to 95 percent and the effect of FLD activation level is also investigated. In addition, the results showed that placing FLDs on critical members could provide a ductility significantly greater than the ductility provided by another method of retrofitting DLSTs called the method of over designing the members of compression layer and under designing the members of tension layer.
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