To see the other types of publications on this topic, follow the link: Aktuationsverhalten von Smart Materials.
Journal articles on the topic 'Aktuationsverhalten von Smart Materials'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 29 journal articles for your research on the topic 'Aktuationsverhalten von Smart Materials.'
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.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Kletti, Nathalie. "Smart Factory Elements." VDI-Z 161, no. 04 (2019): 22–23. http://dx.doi.org/10.37544/0042-1766-2019-04-22.
Full textAbstract:
Die Anforderungen an die Produktion sind enorm gewachsen, was zu einer gestiegenen Komplexität führt: zum Beispiel hohe Variantenvielfalt, kurze Lieferfristen, schnelle Prozessanpassungen, kleinere Losgrößen bis zu Losgröße 1. In Zeiten von Industrie 4.0 ist das ganz eindeutig ein Fall für die „Smart Factory“ – und diese wiederum benötigt bestimmte Prozesse und Funktionen, um den wachsenden Anforderungen gerecht zu werden: die Smart Factory Elements.
2
Bay, Renate. "Intelligente Datenverarbeitung für die Welt von morgen." Konstruktion 73, no. 01-02 (2021): 26–29. http://dx.doi.org/10.37544/0720-5953-2021-01-02-26.
Full textAbstract:
Ob vorausschauende Wartung, selbstlernende Maschinen oder ferngesteuerte Frachtschiffe: Sogenannte Smart Factory- oder auch Smart Shipping-Anwendungen lassen sich nur mit intelligenten Sensoren realisieren, in denen die immensen Datenmengen bereits vorverarbeitet und komprimiert werden. Smarte Sensoren schaffen ideale Voraussetzungen für diese Industrie 4.0-Applikationen. Mit intelligenten Inertialsensoren (vom lateinischen „inertia“ = Trägheit) bietet der Sensor-Spezialist ASC passende Messlösungen für verschiedenste Einsatzgebiete.
3
Roth, Mathias. "Smart und revolutionär: Seilzuggeber für Hydraulik- und Teleskopzylinder." Konstruktion 70, S1 (2018): 50–52. http://dx.doi.org/10.37544/0720-5953-2018-s1-50.
Full textAbstract:
Siko hat mit der SGH-Serie Seilzuggeber zur Positionsmessung von Hydraulikzylindern, Teleskopzylindern oder Kolbenspeichern entwickelt, die sich vollständig in die Zylinder integrieren lassen. Im Gespräch erklärt Mathias Roth, Branchenmanager Mobile Automation bei Siko, was die SGH- Technologie auszeichnet und was ihre Vorteile im Vergleich zu anderen Systemen sind.
4
Zanotti, Tommaso, Francesco Maria Puglisi, and Paolo Pavan. "Smart Logic-in-Memory Architecture for Low-Power Non-Von Neumann Computing." IEEE Journal of the Electron Devices Society 8 (2020): 757–64. http://dx.doi.org/10.1109/jeds.2020.2987402.
Full text
5
Sahoo, Soumya Ranjan. "Active damping of geometrically nonlinear vibrations of smart composite shells using elliptical smart constrained layer damping treatment with fractional derivative viscoelastic layer." Journal of Intelligent Material Systems and Structures 31, no. 4 (December 25, 2019): 587–611. http://dx.doi.org/10.1177/1045389x19888800.
Full textAbstract:
In this article, the performance of elliptical smart constrained layer damping treatments on active damping of geometrically nonlinear vibrations of doubly curved smart laminated composite shells is analyzed. The constraining layers of the smart constrained layer damping treatments comprised vertically/obliquely reinforced 1–3 piezoelectric composites, while the constrained layers of isotropic viscoelastic materials are modeled using the three-dimensional fractional order derivative model. A mesh-free model of the smart composite shells is developed for analyzing their nonlinear transient responses within the framework of a layerwise shear and normal deformation theory considering the von Kármán–type geometric nonlinearity. Thin, doubly curved laminated composite shells integrated with elliptical/rectangular smart constrained layer damping patches with different stacking sequences and boundary conditions are considered for presenting the numerical results. The numerical analyses demonstrate the higher effectiveness of the elliptical smart constrained layer damping treatments over the rectangular ones in attenuating the nonlinear vibrations of laminated composite shells.
6
Rüttger, Siegfried. "Vorausschauende Instandhaltung in der Industrie 4.0." Konstruktion 70, no. 01-02 (2018): 14–16. http://dx.doi.org/10.37544/0720-5953-2018-01-02-14.
Full textAbstract:
Vorausschauende Wartungs- und Service-Prozesse sind nur auf der Grundlage umfangreicher Daten möglich, die von Komponenten und Maschinen im Fertigungsprozess bereitgestellt werden. Diese Monitoring-Informationen können nun auch von Sicherheitskomponenten geliefert und in einer Cloud-Umgebung ausgewertet werden. Im Kontext von Industrie 4.0 gewährleistet die Sicherheitstechnologie damit nicht nur die Einhaltung von Sicherheitsstandards, sondern trägt gleichzeitig zur Erhöhung der Anlagenverfügbarkeit bei. Eine solche Lösung bietet die „Smart Safety Solution“ von Schmersal, die das Unternehmen erstmals auf der SPS IPC Drives 2017 vorstellte.
7
Datta, Priyankar, and Manas Chandra Ray. "Effect of carbon nanotube waviness on smart damping of geometrically nonlinear vibrations of fuzzy-fiber reinforced composite plates." Journal of Intelligent Material Systems and Structures 30, no. 7 (February 19, 2019): 977–97. http://dx.doi.org/10.1177/1045389x19828481.
Full textAbstract:
In this article, we present a finite element model for the three-dimensional analysis of smart constrained layer damping of geometrically nonlinear vibrations of laminated fuzzy-fiber reinforced composite plates. The three-dimensional fractional derivative constitutive relation is implemented for the viscoelastic layer. The constraining layer of the smart constrained layer damping treatment is composed of the vertically/obliquely reinforced 1–3 piezoelectric composites. The von Kármán–type nonlinear strain–displacement relations are used to incorporate the geometric nonlinearity in the model. The main aim of this article is to numerically investigate the effect of carbon nanotube waviness on the nonlinear smart damping. Several thin laminated substrate fuzzy-fiber reinforced composite plates with straight carbon nanotubes and wavy carbon nanotubes with different waviness in different planes are considered with various boundary conditions and stacking sequences to numerically compute their effect on smart damping. The performance of the obliquely reinforced 1–3 piezoelectric composites is discussed and the efficacy of the present smart finite element model in terms of active control authority is also presented.
8
Berger, Jürgen. "Lichtwellenleiter – die Daten-Highways einer vernetzten Industrie." Konstruktion 69, no. 06 (2017): 26–28. http://dx.doi.org/10.37544/0720-5953-2017-06-26.
Full textAbstract:
Datenkabel sind die heimlichen Stars von Industrie 4.0 und Digitalisierung. Ohne sie geht nichts, denn sie sind das Netz – nicht im übertragenen Sinn, sondern ganz konkret und physisch. Dennoch fristen sie ein ziemlich unspektakuläres Dasein als typisches C-Teil: kostengünstig im Einkauf, doch mit einem relativ hohen zeitlichen Bereitstellungsaufwand. Wird dies der Schlüsselrolle von Lichtwellenleitern auf dem Weg zur Smart Factory gerecht?
9
Schili, Martina. "Qualitätskontrolle in High Speed dank leistungsstarker Kameratechnologie." Konstruktion 70, no. 04 (2018): 32–34. http://dx.doi.org/10.37544/0720-5953-2018-04-32.
Full textAbstract:
Ob Soßen, Snacks oder Fertiggerichte abgefüllt und verpackt werden müssen – in der Verpackungstechnik und Lebensmittelindustrie zählen hoher Durchsatz und schnelle Formatwechsel – und das bei höchsten Qualitäts- und Hygienestandards. Hierzu müssen die eingesetzten Sensoren vor allem eines leisten: Sie müssen hohe Anforderungen an Leistung, Flexibilität und Hygiene miteinander verbinden. Dazu haben die Verpackungsmaschinen-Experten von SN Maschinenbau das Gesamtkonzept einer Beutelabfüllanlage, eingesetzt bei namhaften Unternehmen in der Lebensmittelindustrie, neu durchdacht, innovativ gelöst und bei der Verifizierung von Codes und Mindesthaltbarkeitsdaten auf die „Smart Kamera“-Technologie von Leuze electronic gesetzt.
10
RAFIEE, M., X. Q. HE, S. MAREISHI, and K. M. LIEW. "MODELING AND STRESS ANALYSIS OF SMART CNTs/FIBER/POLYMER MULTISCALE COMPOSITE PLATES." International Journal of Applied Mechanics 06, no. 03 (May 6, 2014): 1450025. http://dx.doi.org/10.1142/s1758825114500252.
Full textAbstract:
Modeling and nonlinear stress analysis of piezolaminated CNTs/fiber/polymer composite (CNTFPC) plates under a combined mechanical and electrical loading are investigated in this study. The governing equations of the piezoelectric CNTFPC plates are derived based on first-order shear deformation plate theory (FSDT) and von Kármán geometric nonlinearity. Halpin–Tsai equations and fiber micromechanics are used in hierarchy to predict the bulk material properties of the multiscale composite. The CNTs are assumed to be uniformly distributed and randomly oriented through the epoxy resin matrix. An analytical solution is employed to determine the large deflection response and stress analysis of the nanocomposite plates. Finally, by solving some numerical examples for simply supported plates, the effects of the applied constant voltage, plate geometry, volume fraction of fibers and weight percentage of SWCNTs and MWCNTs on the deflection and stress analyses of the piezoelectric CNTs/fiber/polymer multiscale composite plate are studied. It is shown that the deflections significantly decrease with a small percentage of CNTs. Also, it is found that the SWCNTs reinforcement produces more pronounced effect on the bending and stress of the nanocomposite plates in comparison with MWCNTs.
11
Maleki-Bigdeli, Mohammad-Ali, Majid Baniassadi, Kui Wang, and Mostafa Baghani. "Developing a beam formulation for semi-crystalline two-way shape memory polymers." Journal of Intelligent Material Systems and Structures 31, no. 12 (May 30, 2020): 1465–76. http://dx.doi.org/10.1177/1045389x20924837.
Full textAbstract:
In this research, the bending of a two-way shape memory polymer beam is examined implementing a one-dimensional phenomenological macroscopic constitutive model into Euler–Bernoulli and von-Karman beam theories. Since bending loading is a fundamental problem in engineering applications, a combination of bending problem and two-way shape memory effect capable of switching between two temporary shapes can be used in different applications, for example, thermally activated sensors and actuators. Shape memory polymers as a branch of soft materials can undergo large deformation. Hence, Euler–Bernoulli beam theory does not apply to the bending of a shape memory polymer beam where moderate rotations may occur. To overcome this limitation, von-Karman beam theory accounting for the mid-plane stretching as well as moderate rotations can be employed. To investigate the difference between the two beam theories, the deflection and rotating angles of a shape memory polymer cantilever beam are analyzed under small and moderate deflections and rotations. A semi-analytical approach is used to inspect Euler–Bernoulli beam theory, while finite-element method is employed to study von-Karman beam theory. In the following, a smart structure is analyzed using a prepared user-defined subroutine, VUMAT, in finite-element package, ABAQUS/EXPLICIT. Utilizing generated user-defined subroutine, smart structures composed of shape memory polymer material can be analyzed under complex loading circumstances through the two-way shape memory effect.
12
Panda, Satyajit. "Non-linear analysis of smart annular plates using cylindrically orthotropic piezoelectric fiber-reinforced composite." Journal of Intelligent Material Systems and Structures 22, no. 16 (August 17, 2011): 1789–801. http://dx.doi.org/10.1177/1045389x11409080.
Full textAbstract:
This article deals with geometrically non-linear finite element analysis of substrate annular plates integrated with the annular patches of the piezoelectric fiber reinforced composite (PFRC) material. The PFRC material is a cylindrically orthotropic smart composite material in which the piezoelectric fibers are circumferentially reinforced in the epoxy matrix material. The annular PFRC patches are activated by the externally applied voltage across their thickness and act as the distributed actuators for controlling the non-linear deformations of the substrate annular plates. Based on the first-order shear deformation theory and the von Karman non-linear strain–displacement relations, the non-linear governing finite element equations of equilibrium of this electro-elastic coupled problem are derived employing the principle of minimum potential energy. The governing non-linear finite element equations are then solved using direct iteration method. The numerical illustrations reveal the significant control authority of the cylindrically orthotropic annular PFRC patches in counteracting the non-linear deformations of the substrate annular plates. The numerical illustrations also reveal that for the constant circumferential stretch of the annular PFRC patches, if their radial span is less than that of the substrate annular plate, then the radial location of the annular patches attached to the top surface of the substrate plate plays an important role for their effective control authority. Along with this location, the minimum radial length of the annular PFRC patches is also assessed without affecting the performance of the overall smart plate significantly.
13
Kiener, Christoph, and Marion Merklein. "Virtuelle Analysetools – eine smarte Methode zur effizienten Erforschung von Kaltfließpressprozessen/Virtual Analysis Tools – a Smart Method for an Efficient Research of Cold Forging Processes." Konstruktion 69, no. 11-12 (2017): 78–82. http://dx.doi.org/10.37544/0720-5953-2017-11-12-78.
Full textAbstract:
Inhalt: Zahnräder sind integrale und unverzichtbare Komponenten in der Antriebs- und Getriebetechnik. Aufgrund ökonomischer sowie ökologischer Aspekte bildet das Kaltfließpressen eine vielversprechende Alternative bei der Fertigung hochbeanspruchbarer Zahnräder gegenüber den konventionellen spanenden Verfahren. Die erzielbare Verzahnungsgenauigkeit sowie unzureichende Werkzeugstandmengen gelten als wesentliche Herausforderungen bei der Etablierung kaltfließpresstechnischer Prozesse in der industriellen Praxis. Ein Einsatz numerischer Analysetools birgt hierbei einen erfolgsversprechenden Ansatz zur effizienten und effektiven Prozesserforschung.
14
SARANGI, SAROJ KUMAR, and M. C. Ray. "SMART CONTROL OF NONLINEAR VIBRATIONS OF LAMINATED PLATES USING ACTIVE FIBER COMPOSITES." International Journal of Structural Stability and Dynamics 12, no. 06 (December 2012): 1250050. http://dx.doi.org/10.1142/s0219455412500502.
Full textAbstract:
This paper deals with the geometrically nonlinear dynamic analysis of smart laminated composite plates integrated with the patches of active constrained layer damping (ACLD) treatment. The constraining layer of the ACLD treatment is made of active fiber composite (AFC) materials. The Von Kármán type nonlinear strain–displacement relations and the first-order shear deformation theory (FSDT) are adopted in deriving the coupled electromechanical nonlinear finite element (FE) model. The Golla–Hughes–McTavish (GHM) method is implemented to model the constrained viscoelastic layer of the ACLD treatment in time domain. Symmetric/antisymmetric cross-ply and antisymmetric angle-ply laminated substrate plates are considered in the numerical analyses. The results indicate that the ACLD patches significantly improve the damping characteristics of the plates for suppressing the geometrically nonlinear transient vibrations of the plates. The effects of variation of piezoelectric fiber orientation in the AFC constraining layer on the control authority of the ACLD patches have also been investigated.
15
Böhm, Andreas, Michael Mayer, and Gerald Ressel. "The 3rd Level – Entwicklung der Feinstzerkleinerung und Ausbau der Flotation am Lehrstuhl für Aufbereitung und Veredlung." BHM Berg- und Hüttenmännische Monatshefte 165, no. 10 (October 2020): 505–12. http://dx.doi.org/10.1007/s00501-020-01058-y.
Full textAbstract:
ZusammenfassungIm Februar dieses Jahres konnte der Lehrstuhl für Aufbereitung und Veredlung auf Basis von lehrstuhlinternen Forschungsarbeiten zur Zerkleinerungstechnik in Kooperation mit dem „Materials Center Leoben Forschung GmbH“ (MCL) die Laboratorien in den 3. Stock des Impulszentrums für Rohstoffe und damit um eine Gesamtfläche von ca. 175 m2 ausdehnen. Mit finanzkräftiger Unterstützung durch die Montanuniversität Leoben, die zwei Anträge der Lehrstuhlleitung (hausinterne Impulsprogramme) positiv bewertete, konnte die apparative Ausrüstung aufgebaut werden, um die Forschungsziele Energieoptimierte Feinstzerkleinerung <5 µm, Smart processing und Integrale Prozessführung „mill as reactor“ in Angriff zu nehmen. Daneben werden ein zusätzliches Flotationslabor und Räumlichkeiten für Analytik mit Ende des Jahres einsatzbereit sein.Eine mobile Pilotanlage zur Rührwerkskugelmühlenmahlung und eine Labormühle für kryogene Mahlung sowie Mahlung bei erhöhtem Gasdruck sind die Anlagen, die in unterschiedlichen Forschungsprojekten erprobt, genutzt und zur Prozessreife geführt werden sollen.Die technische Erweiterung erschließt dem Lehrstuhl die Feinstzerkleinerung, Anlagenauslegung, Automatisierung von Zerkleinerungsabläufen und Prozessentwicklung jenseits des herkömmlichen Einsatzes von Mühlen in der Primär- und Sekundärrohstoffaufbereitung.
16
Zhou, Bo, Xiao Ma, and Shifeng Xue. "Nonlinear Analysis of Laminated Beams with Braided Fiber Piezoelectric Composite Actuators." International Journal of Applied Mechanics 12, no. 04 (May 2020): 2050043. http://dx.doi.org/10.1142/s175882512050043x.
Full textAbstract:
This paper presents a novel approach for improving the reliability and driving capability of piezoelectric actuators by developing braided fiber piezoelectric composite (BFPC) actuators. The nonlinear analysis of laminated beams integrated with the BFPC actuators under electric load is presented. According to Timoshenko beam theory and von Kármán nonlinear geometric relation, the strain components of the piezoelectric laminated beams are obtained. The nonlinear governing equations of the piezoelectric laminated beams are derived by the Galerkin method and principle of minimum potential energy, and then are solved through the direct iterative method. The accuracy of this method is demonstrated by its comparison with the published results. The driving capability of the BFPC actuator and the existing piezoelectric composite actuator is compared. The influences of the fiber volume fraction, actuator thickness, simply supported beam thickness and applied voltage on the driving capability of the BFPC actuators are discussed through a comprehensive parametric study. The numerical results illustrate that the BFPC actuators with excellent driving capability can effectively control the deformation of smart structures.
17
Wang, Yu, Chuang Feng, Jie Yang, Ding Zhou, and Weiqing Liu. "Static response of functionally graded graphene platelet–reinforced composite plate with dielectric property." Journal of Intelligent Material Systems and Structures 31, no. 19 (July 28, 2020): 2211–28. http://dx.doi.org/10.1177/1045389x20943955.
Full textAbstract:
This article investigates the nonlinear bending of functionally graded graphene platelet–reinforced composite plate with dielectric permittivity. Three functionally graded graphene platelet distribution patterns are considered in this study. Effective medium theory is adopted to determine tensile modulus and dielectric permittivity while rule of mixture is used to determine Poisson’s ratio of graphene platelet–reinforced composites. Governing equations for nonlinear bending of the functionally graded graphene platelet–reinforced composite plates are established based on Hamilton’s principle within the framework of first-order shear deformation plate theory and von Kármán geometrical nonlinearity. Through differential quadrature method, the governing equations are numerically solved and the nonlinear bending behaviors of the functionally graded graphene platelet–reinforced composite plates are obtained. The influences of functionally graded distribution pattern, graphene platelet volume fraction and the attributes of electrical loadings on the bending behaviors of the plates are comprehensively examined. It is demonstrated that the performances of the functionally graded graphene platelet–reinforced composite plates can be designed and actively tuned through adjusting several parameters, which will be helpful to develop graphene platelet–reinforced smart materials and structures.
18
Fu, Chenbo, Yiwei Xu, Fan Xu, and Yongzhong Huo. "Light-Induced Bending and Buckling of Large-Deflected Liquid Crystalline Polymer Plates." International Journal of Applied Mechanics 08, no. 07 (October 2016): 1640007. http://dx.doi.org/10.1142/s175882511640007x.
Full textAbstract:
Cross-linked liquid crystalline polymers (LCPs) are smart materials for large light-activated variation or bend to transfer luminous energy into mechanical energy. We study the light-induced behavior of homeotropic nematic network polymer plates. The perturbation method is applied to find approximate solutions under uniform illumination and compared with finite element simulations. Moreover, situations of nonuniform laser illumination are investigated. Unlike single solution obtained from small displacement assumption, multiple solutions within Föppl–von Kármán nonlinear geometry framework are found in the post-buckling regime and the effect of various boundary conditions is discussed. The nonuniform bending moment generated by the inhomogeneous light-induced strain, membrane force and boundary effects lead to the unconventional nonsymmetric buckling behavior that is rarely observed under traditional mechanical or thermal loading.
19
Yang, Jie, Sritawat Kitipornchai, and Chuang Feng. "Nonlinear Vibration of PZT4/PZT-5H Monomorph and Bimorph Beams with Graded Microstructures." International Journal of Structural Stability and Dynamics 15, no. 07 (August 31, 2015): 1540015. http://dx.doi.org/10.1142/s0219455415400155.
Full textAbstract:
Monomorph and bimorph actuators made of piezoelectric materials are widely used in smart materials and structural control. Recent studies show that their performances can be remarkably improved by the use of functionally graded piezoelectric materials (FGPMs) whose compositional profile and effective material properties are graded along the thickness direction. This paper investigates the linear and nonlinear vibration behaviors of monomorph and bimorph made from a mixture of PZT4 and PZT-5H with material composition following a power law distribution. Theoretical formulations are based on von Kármán kinematic relationships and Timoshenko beam theory to account for the effect of transverse shear deformation. The differential quadrature method (DQM) and the second-order backward difference scheme are employed to obtain the linear and nonlinear vibration frequencies. A parametric study is conducted to investigate the influences of volume fraction index, slenderness ratio, nonlinear deformation and different loading conditions.
20
"WiGeP-Positionspapier: „Smart Engineering“." Konstruktion 69, no. 05 (2017): 76–77. http://dx.doi.org/10.37544/0720-5953-2017-05-76.
Full textAbstract:
Im Kontext von Industrie 4.0 werden sich Produkte und damit einhergehend auch das Engineering dieser Produkte radikal verändern. Seit mehreren Jahren befasst sich die WiGeP im Rahmen ver- schiedener Workshops, Studien und Forschungsaktivitäten mit den Veränderungen des Engineerings im Kontext von Industrie 4.0. Das vorliegende Positionspapier fasst die wichtigsten Erwartungen und Thesen zusammen.
21
"Virtuelle Inbetriebnahme einer Smart Factory in VR." Konstruktion 73, no. 10 (2021): 44–46. http://dx.doi.org/10.37544/0720-5953-2021-10-44.
Full textAbstract:
Am Beispiel einer Smart Factory und dessen digitalen Zwillings wird dargestellt, wie mit Hilfe von Virtual Reality Produktkonfigurationen sowie die Steuerung des Anlagenverhaltens ermöglicht wird. Interaktionsmethoden in Virtual Reality lassen einfaches und schnelles grafisches Programmieren und Rekonfigurieren von Anlagenverhalten zu. Durch eine Integration von Simulationssoftware können Anpassungen in der VR vorsimuliert, an die reale Anlage übertragen und live per Remoteverbindung begutachtet werden.
22
"Digitalisierte Pneumatik erreicht hohe Produktivität." Konstruktion 69, no. 10 (2017): 66. http://dx.doi.org/10.37544/0720-5953-2017-10-66.
Full textAbstract:
Zuverlässige Aussagen zum Verschleißzustand und wertvolle Hinweise zur Energieeffizienz von Pneumatiksystemen erhalten Endanwender mit dem Modul „Smart Pneumatics Monitor“ von Aventics. Ohne Umweg über die Maschinensteuerung sendet es vorverarbeitete Zustandsmeldungen an definierte Mitarbeiter und übergeordnete IT-Systeme. Diese Informationen verringern das Risiko von Maschinenstillstand und senken die Betriebskosten nachhaltig.
23
"Neue Möglichkeiten der vorausschauenden Wartung." VDI-Z 161, no. 01-02 (2019): 59. http://dx.doi.org/10.37544/0042-1766-2019-01-02-59.
Full textAbstract:
„Machine Learning”, „Big Data” und „Industrie 4.0” – inzwischen verbergen sich hinter reinen Schlagworten längst reale Konzepte, mit denen Kunden von den zahlreichen Möglichkeiten der Digitalisierung profitieren. Durch „intelligente“ Produkte wie die „smart plastics“ von igus können Unternehmen beispielsweise die Ausfallsicherheit ihrer Anlagen erhöhen, Wartungseinsätze präzise planen und dadurch Kosten sparen.
24
"Werkzeug-Handling 24/7." VDI-Z 161, Special-II (2019): 48–49. http://dx.doi.org/10.37544/0042-1766-2019-special-ii-48.
Full textAbstract:
Durchgängiger Datentransfer und die Möglichkeit, Achsen per CNC anzusteuern, sind die Voraussetzung für automatisierte Systeme in den Smart Factories oder bei Industrie 4.0. Die Einstell- und Messgeräte von Zoller bringen alles Nötige mit. Damit lässt sich das Werkzeughandling für die zerspanende Fertigung automatisieren – mit unterschiedlichen Lösungsansätzen.
25
"Intelligente Maschinen – dank Technologietransfer." Konstruktion 71, no. 10 (2019): 35–37. http://dx.doi.org/10.37544/0720-5953-2019-10-35.
Full textAbstract:
Die Firma ZTI Smart Machines aus dem niederländischen Tuitjenhorn entwickelt Maschinen für die Automatisierung und Mechanisierung der Verarbeitung äußerst empfindlicher Produkte wie Gemüse, Obst und Blumen. Daneben innovative Lösungen für den Automotive-Bereich, das Gesundheitswesen und weitere Industrien. Für Anwendungen, in denen Linearführungen gebraucht werden, greifen die Entwickler von ZTI immer wieder auf Produkte der Rollon Gruppe zurück.
26
Lal, Achchhe, and Kanif Markad. "Thermal post buckling analysis of smart SMA hybrid sandwich composite plate." Polymers and Polymer Composites, March 24, 2021, 096739112110012. http://dx.doi.org/10.1177/09673911211001276.
Full textAbstract:
Thermal post-buckling analysis of smart sandwich plates has been presented with the incorporation of shape memory alloy (SMA) and shape memory polymer (SMP) in laminated composite structure under uniform temperature distribution. Buckling analysis is based on higher order shear deformation theory (HSDT) with von Karman nonlinearity by finite element method (FEM). Evaluation of critical buckling temperature has been performed under the action of inplane uniform temperature distribution for different boundary conditions, plate’s aspect and thickness ratio, modulus ratio, ply orientations of smart SMA hybrid sandwich composite plate. Shape memory alloys itself acting uniquely under temperature variation and with SMA reinforced SMP laminated composite plate this phenomenon extended further under dynamic temperature condition for thermal buckling behavior. Also SMA with different strain rate and variation in SMA volume fraction is also presented to understand the cumulative buckling behavior.
27
Sayyaadi, Hassan, and Hossein Naderi. "Modeling of magnetic shape memory alloy plates for pressure sensor application." Journal of Intelligent Material Systems and Structures, September 1, 2020, 1045389X2094717. http://dx.doi.org/10.1177/1045389x20947170.
Full textAbstract:
This article investigates the basis for pressure sensor application based on the magnetic shape memory effect in membranes. Von Karmans nonlinear terms are considered in strain–displacement relationships of thin films, and a new method is presented for solution of large deflections of thin films with arbitrary boundary condition. In this study, the equations of motion of magnetic shape memory alloys are extended. In pressurized membranes, the complex distribution of mechanical stress can cause the martensitic reorientation, which is the underlying mechanism for sensing applications in magnetic shape memory alloys. To examine the obtained model, the governing equations of magnetic shape memory alloys are solved for clamped thin films and results are compared with experimental data. Demonstrating good agreement with experimental data, the presented model can be used for analysis of magnetic shape memory alloy–based smart structures. In this article, the deflection profile of the uniformly loaded thin films is determined with different boundary conditions. Furthermore, the center deflection of magnetic shape memory alloy membrane under different magnetic bias field is simulated. The results of simulation can be used for designing a membrane-based pressure sensor using magnetic shape memory alloys.
28
Masoumi, Arian, Ahad Amiri, Rahim Vesal, and Ghader Rezazadeh. "Nonlinear static pull-in instability analysis of smart nano-switch considering flexoelectric and surface effects via DQM." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, May 31, 2021, 095440622199748. http://dx.doi.org/10.1177/0954406221997481.
Full textAbstract:
This paper deals with the investigation of nonlinear static pull-in instability of smart Nano-switches regarding the new size-dependent phenomenon, known as flexoelectricity, together with the surface effects. It is noteworthy that the coupling effect of the flexoelectricity and surface elasticity on nonlinear static pull-in instability of electrostatically-actuated Nano-switches has not been studied before. Euler-Bernoulli beam assumptions in conjunction with the von-Karman nonlinearity are considered to formulate the problem. The Nano-switch is subjected to electrostatic actuation force with fringing field effect as well as Casimir force. Refined constitutive relations for piezoelectric materials capturing the flexoelectric effects are taken into consideration for mathematical modeling. Additionally, a surface elasticity approach is employed to reach an accurate model for the system. Considering the imposed electric boundary conditions, Gauss’s equation is solved to acquire the electric potential distribution along with the thickness of the Nano-switch. Thereafter, Hamilton’s principle is hired to derive the coupled nonlinear governing equations of the system. Utilizing the differential quadrature method (DQM), the nonlinear ordinary differential equations are transformed into a system of nonlinear algebraic equations. Consequently, Newton-Raphson method is exploited as a numerical method to solve the obtained algebraic equations which leads to the pull-in voltage. Investigating the maximum displacement of the Nano-switch in response to the applied electrostatic force, the effects of various involved parameters such as flexoelectricity and surface elasticity on pull-in instability are explored in detail. Furthermore, the size-dependent behavior of the pull-in instability against the flexoelectric, surface effects and applied piezoelectric voltage is analyzed. Totally, it is revealed that the flexoelectricity may exhibit a substantial influence on the pull-in behavior of smart Nano-switches, especially for some cases with small thicknesses. Therefore, this effect should be taken into account to reach an accurate, reliable and optimized design for Nano-switches.
29
Cong, Pham Hong, and Nguyen Dinh Duc. "Postbuckling Behavior of Functionally Graded Multilayer Graphene Nanocomposite Plate under Mechanical and Thermal Loads on Elastic Foundations." VNU Journal of Science: Natural Sciences and Technology 35, no. 4 (December 23, 2019). http://dx.doi.org/10.25073/2588-1140/vnunst.4972.
Full textAbstract:
This paper presents an analytical approach to postbuckling behaviors of functionally graded multilayer nanocomposite plates reinforced by a low content of graphene platelets (GPLs) using the first order shear deformation theory, stress function and von Karman-type nonlinear kinematics and include the effect of an initial geometric imperfection. The weight fraction of GPL nano fillers is assumed to be constant in each individual GPL-reinforced composite (GPLRC). The modified Halpin-Tsai micromechanics model that takes into account the GPL geometry effect is adopted to estimate the effective Young’s modulus of GPLRC layers. The plate is assumed to resting on Pasternak foundation model and subjected to mechanical and thermal loads. The results show the influences of the GPL distribution pattern, weight fraction, geometry, elastic foundations, mechanical and temperature loads on the postbuckling behaviors of FG multilayer GPLRC plates.
Keywords: Postbuckling; Graphene nanocomposite plate; First order shear deformation plate theory.
References
[1] K.S. Novoselov, A.K. Geim, S.V. Morozov, D. Jiang, Y. Zhang, S.V. Dubonos, I.V. Grigorieva, A. Firsov, Electric filed effect in atomically thin carbon films, Science 306 (2004) 666–669. http://doi.org/ 10.1126/science.1102896.[2] K.S. Novoselov, D. Jiang, F. Schedin, T.J. Booth, V.V. Khotkevich, S.V. Morozov, A.K. Geim, Two-dimensional atomic crystals, Proceedings of the National Academy of Sciences of the United States of America 102 (2005) 10451–10453. https://doi.org/10.1073/pnas.0502848102.[3] C.D. Reddy, S. Rajendran, K.M. Liew, Equilibrium configuration and continuum elastic properties of finite sized graphene, Nanotechnology 17 (2006) 864-870. https://doi. org/10.1088/0957-4484/17/3/042.[4] C. Lee, X.D. Wei, J.W. Kysar, J. Hone, Measurement of the elastic properties and intrinsic strength of monolayer graphene, Science 321 (2008) 385–388. http://doi.org/10.1126/ science.1157996.[5] F. Scarpa, S. Adhikari, A.S. Phani, Effective elastic mechanical properties of single layer graphene sheets, Nanotechnology 20 (2009) 065709. https://doi.org/10.1088/0957-4484/20/6/ 065709.[6] Y.X. Xu, W.J. Hong, H. Bai, C. Li, G.Q. Shi, Strong and ductile poly(vinylalcohol)/graphene oxide composite films with a layered structure, Carbon 47 (2009) 3538–3543. https://doi.org/ 10.1016/j.carbon.2009.08.022.[7] J.R. Potts, D.R. Dreyer, C.W. Bielawski, R.S. Ruoff, Graphene-based polymer nanocomposites, Polymer 52 (2011) 5-25. https://doi.org/10.1016/j .polymer.2010.11.042.[8] T.K. Das, S. Prusty, Graphene-based polymer composites and their applications, Polymer-Plastics Technology and Engineering 52 (2013) 319-331. https://doi.org/10.1080/03602559.2012. 751410.[9] M. Song, J. Yang, S. Kitipornchai, W. Zhud, Buckling and postbuckling of biaxially compressed functionally graded multilayer graphene nanoplatelet-reinforced polymer composite plates, International Journal of Mechanical Sciences 131–132 (2017) 345–355. https://doi.org/10.1016/j.ijmecsci.2017.07.017.[10] H.S. Shen, Y. Xiang, F. Lin, D. Hui, Buckling and postbuckling of functionally graded graphene-reinforced composite laminated plates in thermal environments, Composites Part B 119 (2017) 67-78. https://doi.org/10.1016/j.compositesb.2017. 03.020.[11] H. Wu, S. Kitipornchai, J. Yang, Thermal buckling and postbuckling of functionally graded graphene nanocomposite plates, Materials and Design 132 (2017) 430–441. https://doi.org/10. 1016/j.matdes.2017.07.025.[12] J. Yang, H. Wu, S. Kitipornchai, Buckling and postbuckling of functionally graded multilayer graphene platelet-reinforced composite beams, Composite Structures 161 (2017) 111–118. https://doi.org/10.1016/j.compstruct.2016.11.048.[13] H.S. Shen, Y. Xiang, Y. Fan, Postbuckling of functionally graded graphene-reinforced composite laminated cylindrical panels under axial compression in thermal environments, International Journal of Mechanical Sciences 135 (2018) 398–409. https://doi.org/10.1016/j.ijme csci.2017.11.031.[14] M.D. Rasool, B. Kamran, Stability analysis of multifunctional smart sandwich plates with graphene nanocomposite and porous layers, International Journal of Mechanical Sciences 167 (2019) 105283. https://doi.org/10.1016/j.ijmecs ci.2019.105283.[15] J.J. Mao, W. Zhang, Buckling and post-buckling analyses of functionally graded graphene reinforced piezoelectric plate subjected to electric potential and axial forces, Composite Structures 216 (2019) 392–405. https://doi.org/10.1016/j. compstruct.2019.02.095.[16] P.H. Cong, N.D. Duc, New approach to investigate nonlinear dynamic response and vibration of functionally graded multilayer graphene nanocomposite plate on viscoelastic Pasternak medium in thermal environment, Acta Mechanica 229 (2018) 651-3670. https://doi.org/ 10.1007/s00707-018-2178-3.[17] N.D. Duc, N.D. Lam, T.Q. Quan, P.M. Quang, N.V. Quyen, Nonlinear post-buckling and vibration of 2D penta-graphene composite plates, Acta Mechanica (2019), https://doi.org/10. 1007/s00707-019-02546-0.[18] N.D. Duc, P.T. Lam, N.V. Quyen, V.D. Quang, Nonlinear Dynamic Response and Vibration of 2D Penta-graphene Composite Plates Resting on Elastic Foundation in Thermal Environments, VNU Journal of Science: Mathematics-Physics 35(3) (2019) 13-29. https:// doi.org/10.25073/2588-1124/vnumap. 4371.[19] J.N. Reddy, Mechanics of laminated composite plates and shells; theory and analysis, Boca Raton: CRC Press, 2004.[20] H.S. Shen, A two-step perturbation method in nonlinear analysis of beams, plates and shells, John Wiley & Sons Inc., 2013.