Auswahl der wissenschaftlichen Literatur zum Thema „Gravity Hinge“

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Zeitschriftenartikel zum Thema "Gravity Hinge"

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Chen, Xingyu, Liye Zhao, Jiawen Xu, and Zhikang Liu. "An Improved Analytical Model of a Thrust Stand with a Flexure Hinge Structure Considering Stiffness Drift and Rotation Center Offset." Actuators 13, no. 1 (2024): 21. http://dx.doi.org/10.3390/act13010021.

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Micro-newton thrust stands are widely used in thruster ground calibration procedures for a variety of space missions. The conventional analytical model does not consider the gravity-induced extension effect and systematic error in displacement for thrust stands consisting of hanging pendulums based on flexure hinge structures. This paper proposes an improved analytical model of a hanging pendulum for thrust measurement, where an elliptical notched flexure hinge is the key component. A parametric model of the bending stiffness of the flexure hinge is developed. Equally, both the bending stiffne
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Kim, Hyo Young, Jung Jae Kim, Da Hoon Ahn, Dae Gab Gweon, Chan Gon Park, and Dong Pyo Hong. "Analysis of a 3-DOF Rotationally Symmetric Hinge." Applied Mechanics and Materials 284-287 (January 2013): 597–600. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.597.

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Flexure hinges have been widely used as mechanisms for high precision positioning stages that have a micrometer or nanometer resolution. This paper describes the analysis of a 3-DOF rotationally symmetric hinge for the vertical mask aligner stage. The vertical mask aligner stage was designed to overcome the bending of masks by gravity. In order to align the mask and the wafer, the vertical mask aligner stage has one linear motion and yaw rotating motions (Z, Θx, Θy). The new vertical mask aligner stage will try to use rotationally symmetric hinges. These rotationally symmetric hinges would act
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Fenwick, Richard, Raad Dely, and Barry Davidson. "Ductility demand for uni-directional and reversing plastic hinges in ductile moment resisting frames." Bulletin of the New Zealand Society for Earthquake Engineering 32, no. 1 (1999): 1–12. http://dx.doi.org/10.5459/bnzsee.32.1.1-12.

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In a major earthquake the beams in moment resisting frames may develop either reversing or unidirectional plastic hinges. The form of plastic hinge depends upon the ratio of the moments induced by the gravity loading to those induced by the seismic actions. Where this ratio is low the plastic hinges form at the ends of the beams and the sign of the inelastic rotation changes with the direction of sway. These are reversing plastic hinges, and the magnitude of the rotation that they sustained is closely related to the inter-storey displacement. However, when the moment ratio exceeds a certain cr
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Saenkhum, Nattapon, and Tassanai Sanponpute. "The improvement of an elastic hinge-type torque standard machine in NIMT." ACTA IMEKO 8, no. 3 (2019): 36. http://dx.doi.org/10.21014/acta_imeko.v8i3.668.

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<p class="Abstract" align="left">The National Institute of Metrology of Thailand’s (NIMT) strain-controlled elastic hinge-type torque standard machine was designed to cover a measuring range of 1 N·m to 1 kN·m. The elastic hinge was used both at the fulcrum and the hanger of the lever arms. The designed elastic hinge’s thickness, 0.50 mm, caused a higher stiffness than a sheet metal plate of other types of torque machines. The bending moment of all elastic hinges affected the sum of the torque signal on the lever arm that was used to observe the balancing of the lever. The residual torqu
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GABRIELE GIONTI, S. J. "SOME CONSIDERATIONS ON DISCRETE QUANTUM GRAVITY." International Journal of Geometric Methods in Modern Physics 09, no. 02 (2012): 1260013. http://dx.doi.org/10.1142/s0219887812600134.

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Recent results in Local Regge Calculus are confronted with Spin-Foam Formalism. Introducing Barrett–Crane Quantization in Local Regge Calculus makes it possible to associate a unique Spin jh with an hinge h, fulfilling one of the requirements of Spin-Foam definition. It is shown that inter-twiner terms of Spin-Foam can follow from the closure constraint in Local Regge Calculus.
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Hassan, Soha, Mohamed Sultan, Mohamed Sobh, et al. "Crustal Structure of the Nile Delta: Interpretation of Seismic-Constrained Satellite-Based Gravity Data." Remote Sensing 13, no. 10 (2021): 1934. http://dx.doi.org/10.3390/rs13101934.

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Interpretations of the tectonic setting of the Nile Delta of Egypt and its offshore extension are challenged by the thick sedimentary cover that conceals the underlying structures and by the paucity of deep seismic data and boreholes. A crustal thickness model, constrained by available seismic and geological data, was constructed for the Nile Delta by inversion of satellite gravity data (GOCO06s), and a two-dimensional (2D) forward density model was generated along the Delta’s entire length. Modelling results reveal the following: (1) the Nile Delta is formed of two distinctive crustal units:
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Hasan, Mohammad Nurul, Md Noor Islam, and Salma Begum. "Geophysical interpretation of tectonic features in Bangladesh." Journal of Nepal Geological Society 18 (December 1, 1998): 135–41. http://dx.doi.org/10.3126/jngs.v18i0.32205.

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Bangladesh occupies the major part of the Bengal basin. It is mainly a plain fluvi-dieltaic land. Except the eastern and northeastern Tertiary hilly region, the whole country is covered with thick Quaternary sediments.
 Tectonic features in Bangladesh, except the eastern and northeastern hilly structures, are hidden under thick cover of sediments. Gravity anomalies dearly show the locations of major subsurface tectonic features of the country, namely a) Himalayan foredeep, b) Rangpur platform, c) Hinge zone, d) Surma basin and e) Bengal foredeep. Magnetic anomalies and the seismic section
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Kobayashi, Ryosuke, Shinitiro Nishida, and Shintaro Nakatani. "Study of Mars Rover with Hinge Type Center of Gravity Movement Mechanism." Proceedings of Conference of Chugoku-Shikoku Branch 2018.56 (2018): 1307. http://dx.doi.org/10.1299/jsmecs.2018.56.1307.

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Rezavandi, Arash, and Chung C. Fu. "Response of irregular lightly reinforced concrete frame structures in low seismic zones." Advances in Structural Engineering 20, no. 4 (2016): 519–33. http://dx.doi.org/10.1177/1369433216655921.

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This article evaluates the performance of lightly reinforced concrete frames in low seismic zones. The frames under evaluation contain vertical and/or plane irregularities and are designed for gravity loads only. Nonlinear time history analysis using scaled ground motions and pushover procedure as a supplemental method is performed in this study. With the adoption of plastic hinge method, damage levels are addressed according to FEMA 356 definitions. The pivot model is considered for hysteresis behavior. The damage stage and number of formed hinges are classified for the beams and columns. A c
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Xu, Hao, Jinglong Han, Haiwei Yun, and Xiaomao Chen. "Calculation of the Hinge Moments of a Folding Wing Aircraft during the Flight-Folding Process." International Journal of Aerospace Engineering 2019 (September 3, 2019): 1–11. http://dx.doi.org/10.1155/2019/9362629.

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A folding wing morphing aircraft should complete the folding and unfolding process of its wings while in flight. Calculating the hinge moments during the morphing process is a critical aspect of a folding wing design. Most previous studies on this problem have adopted steady-state or quasi-steady-state methods, which do not simulate the free-flying morphing process. In this study, we construct an aeroelastic flight simulation platform based on the secondary development of ADAMS software to simulate the flight-folding process of a folding wing aircraft. A flexible multibody dynamic model of the
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Dissertationen zum Thema "Gravity Hinge"

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Moss, Andrew M. "Analysis of a Gravity Hinge System for Wind Turbines." Cleveland State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=csu1624479290234317.

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Gowda, Sunil. "Combined Effect of Gravity and Lateral Loads on the Formation of Plastic Hinges in Steel Moment Frames With Reduced Beam Sections." OpenSIUC, 2012. https://opensiuc.lib.siu.edu/theses/798.

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Inelastic behavior in steel special moment frames occurs through the development of plastic hinges at locations near the ends of the beam. The main objective of using a reduced beam connection is to force the formation of plastic hinges to be formed at the reduced beam section rather than at the ends of the beam which otherwise would lead to brittle failure of the beam-column connections. The beam has two reduced beam sections, each located at a certain distance from the face of the column, so that the plastic hinges are formed symmetrically at each of this section. When acted upon by lateral
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Barber, Melinda A. "Contribution of Shear Connections to the Lateral Stiffness and Strength of Steel Frames." University of Cincinnati / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1307442652.

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Muhaj, Helisa. "Seismic strengthening of reinforced concrete beams by post-tensioning with anchorages by bonding." Doctoral thesis, 2020. http://hdl.handle.net/10362/103102.

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RC moment resisting frame buildings are one of the most used structural systems in seismic prone regions. These structures dissipate energy by concentrating the inelastic behaviour (i.e. the damage) in the plastic hinge regions of the structural elements, that form preferably on the beams ends. Since Capacity Design has been part of the Design Codes for some years now, some moment resisting frame buildings have suffered seismic events. Although in most of the cases the ductile performance of structures has successfully preserved the human lives and no collapse has occurred, deficiencies
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Buchteile zum Thema "Gravity Hinge"

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Fine, Dana S. "From Chern-Simons to WZW via Path Integrals." In Knots and Quantum Gravity. Oxford University PressOxford, 1994. http://dx.doi.org/10.1093/oso/9780198534907.003.0006.

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Abstract Direct analysis of the Chern-Simons path integral reduces quantum expectations of unknotted Wilson lines in Chern-Simons theory on S3 with group G to n-point functions in the WZW model of maps from S2 to G. The reduction hinges on the characterization of 𝒜/ 𝒢n, the space of connections modulo those gauge transformations which are the identity at a point n, as itself a principal fiber bundle with affine-linear fiber.
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Konferenzberichte zum Thema "Gravity Hinge"

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Zotov, Alexey, Anvar Valeev, and Artem Tokarev. "Gravity Compensator for Exoskeleton Based on Elastic Hinges with a Given Characteristic." In 2024 International Russian Automation Conference (RusAutoCon). IEEE, 2024. http://dx.doi.org/10.1109/rusautocon61949.2024.10694001.

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Storck, Phillip. "Mathematical Model for the Rotation of a Door Including Vehicle Inclination." In Automotive Technical Papers. SAE International, 2024. http://dx.doi.org/10.4271/2024-01-5045.

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<div class="section abstract"><div class="htmlview paragraph">The analysis presented in this document demonstrates the mathematical model approach for determining the rotation of a door about the hinge axis. Additional results from the model are the torque due to gravity about the axis, opening force, and the door hold open check link force. Vector mechanics, equations of a plane, and parametric equations were utilized to develop this model, which only requires coordinate points as inputs. This model allows for various hinge axis angles and door rotation angles to quickly be analyz
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Hori, Kohei, Iwao Hayashi, and Nobuyuki Iwatsuki. "Determination of the Tooth Surface Friction Coefficient of a Pair of Mating Gears Based on the Distribution Along the Tooth Profile Precisely Measured With the Gravity Pendulum Method." In ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/ptg-14371.

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Abstract A new gravity pendulum method has been proposed in order to precisely measure the tooth surface friction coefficient of a pair of mating gears excluding the bearing loss. In this method, one of the mating gears, which is fixed on a gravity pendulum, is put on the other gear, which is fixed on the ground, and is freely oscillated. The center-to-center distance between the mating gears is kept constant with a flexure hinge mechanism in order to accurately reproduce the relative motion, including rolling and sliding, between the tooth surfaces of practical rotating gears. This method has
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Miesner, Spencer, Kieran Wolk, Ben Furst, et al. "Thermal Testing of an AMDROHP (Additively Manufactured Deployable Radiator Oscillating Heat Pipes) for Use in High-Powered CubeSats." In ASME 2023 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/imece2023-114249.

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Abstract High-power small satellites will play an important role in reducing the cost of space missions. High power levels are required to satisfy high bandwidth communication needs, as well as to accommodate other critical systems such as propulsion and high-power electronics. One of the current high-power limitations is the need to overcome the thermal challenges associated with high thermal loads. While substantial work has been done in the development of deployable solar arrays, relatively little attention has been given to small satellite deployable radiators. Previous deployable small sa
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Stellman, Paul, and George Barbastathis. "Actuation Control for Nanostructured Origami™." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16319.

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The fabrication of arbitrary nanostructured devices in 3D space is relevant to many areas of academic and industrial research. From hybrid systems with various physical features to complex 3D optical interconnects, the added functionality gained by 3D nanomanufacturing is promising for the development of novel applications. Nevertheless, the 2D nature of conventional nanomanufacturing processes (i.e. lithography) underutilizes the 3rd dimension since there is currently no infrastructure for 3D. Nanostructured Origami has been proposed [1-3] as one solution to the 3D nanomanufacturing problem.
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Mishra, Shubham, Garud Sridhar, Muhammad Ibrahim, et al. "Parametric Investigation of the Gas-Assisted Gravity Drainage Technique." In SPE Conference at Oman Petroleum & Energy Show. SPE, 2022. http://dx.doi.org/10.2118/200197-ms.

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Abstract Whereas the application of EOR methods is estimated to recover nearly 6 out of the 9 trillion barrels initially in-place globally, there is a high chance of failure of an EOR project due to lack of characterization, operational challenges, misplaced concept, etc. It is extremely challenging to reduce these uncertainties and hence the success of an EOR project is a big question, except for the case in which the method is relatively immune to such uncertainties. The gas-assisted gravity drainage (GAGD) technique is an excellent example of such a method where the recovery is enhanced by
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Karpachevskyy, Taras, and Swavik Spiewak. "Gravity-Assisted, Passive Cancellation of Disturbances for Inertial Sensors." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-65775.

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Continuing enhancements in Microsystem Technologies facilitate the development of inertial sensors — accelerometers and gyroscopes — of unprecedented performance to cost ratio and broaden the frontiers of their application. Of particular interest, because of their immunity to ambient disturbances, are sensors equipped with high resolution Electro-Mechanical ΣΔ converters and with a high speed, digital serial signal transmission. The digital circuitry of these sensors reaches the accuracy of 0.02 parts-per-million (ppm). However, the analogue transducers of measured physical quantities into ele
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Katarya, Amit. "A Novel Passive Riser Tensioning System for a Dry Tree Spread Moored Barge." In ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51043.

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Dry tree risers on floating systems are presently supported either by TLPs or SPARs, both of which have limited payload capacity and no storage. A spread-moored barge having dry trees, storage and integrated drilling facilities has been developed. Model tests were performed for the riser tensioning system used on such a barge for offshore West Africa conditions. The risers are attached to a rectangular platform in a moon pool of the barge. This platform is supported by means of an articulated Rocker Arm System (RAS) located on the vessel main deck. The RAS has built-in counter weights hinged o
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Sundar, Vallam, Torgeir Moan, and Jo̸rgen Hals. "Conceptual Design of OWC Wave Energy Converters Combined With Breakwater Structures." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20508.

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Ocean wave energy is one of several renewable sources of energy found in the ocean. The energy in the oscillatory ocean waves can be used to drive a machinery that converts the energy to other forms. Depending on the type and their location with respect the coast and offshore, a number of devices have been and are being developed to extract the wave energy for conversion into electricity. The most common devices are referred to as the oscillating water column (OWC), hinged contour device, buoyant moored device, hinged flap and overtopping device. Particularly popular are OWCs and moored floati
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Dibold, M., J. Gerstmayr, and H. Irschik. "Biaxial Vibrations of an Elasto-Plastic Beam With a Prescribed Rigid-Body Rotation." In ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/detc2003/vib-48324.

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In the present work, the development of plastic strains in a flexural beam is studied. The beam is modeled as a Bernoullieuler beam, where large rigid-body rotations and biaxial bending in the small strain regime are studied. The deformation is split into the spatial deformation of a hinged-hinged beam and the movement of the second support. Neglecting axial displacements of the beam, this support moves on a sphere. In the present paper, the latter motion is considered as prescribed. The beam thus is assumed to possess only flexural degrees-offreedom. Such a problem is frequently to be encount
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