Academic literature on the topic 'Nut-and-bolt mechanism'

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Journal articles on the topic "Nut-and-bolt mechanism"

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Nishida, Shinichi, Nobusuke Hattori, H. Iwakiri, and A. Uchisako. "Fatigue Properties of Non-Loosening Bolt with Double Screw Mechanism." Key Engineering Materials 297-300 (November 2005): 2525–32. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.2525.

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Prevention of slack in fastening bolt has been an important researching subject since fatigue failure can be generally caused by loosening nut. According to the above reason, the super lock bolt with double screw mechanism, which is non-loosening, has been developed for preventing such kind of bolt failure. The objects of the present study are as follows: (1) To clarify the fatigue strength characteristics. (2) To investigate the initiation and propagation behaviour of fatigue crack regarding to the thread root of first pitch. In addition, the mechanism of “fatigue strength of super lock bolt”
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SAKAI, Tomotsugu. "Mechanism for a Bolt and Nut Self-Loosening under Repeated Bolt Axial Tensile Load." TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 78, no. 785 (2012): 125–36. http://dx.doi.org/10.1299/kikaia.78.125.

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SAKAI, Tomotsugu. "Mechanism for a Bolt and Nut Self Loosening under Repeated Bolt Axial Tensile Load." Journal of Solid Mechanics and Materials Engineering 5, no. 11 (2011): 627–39. http://dx.doi.org/10.1299/jmmp.5.627.

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Fujioka, Yasuo, and Tomotsugu Sakai. "Rotating Loosening Mechanism of a Nut Connecting a Rotary Disk Under Rotating-Bending Force." Journal of Mechanical Design 127, no. 6 (2005): 1191–97. http://dx.doi.org/10.1115/1.2049087.

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Structures composed of a rotary disk and a shaft, which are fastened with bolts and nuts having tapered bearing surfaces, are loaded with a rotating-bending force. Upon investigation, two rotating mechanisms of the nut were derived. In one mechanism a high-pressure contact area is formed at the nearest loading point on threads and bearing surfaces. This leads to a difference in the curvature radii between the bearing surface of the disk and that of the nut. During the revolution of the disk, two friction torques occur in opposite directions on the bearing surface and the threads, respectively.
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Zhou, Chao Yu, Cheng Xin Lin, and Lin Lin Liu. "Study on Fe-Mn-Si Shape Memory Alloy Anti-Loosening Bolt." Advanced Materials Research 900 (February 2014): 78–82. http://dx.doi.org/10.4028/www.scientific.net/amr.900.78.

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A new type mechanism of anti-loosening bolt has been developed on the basis of the recovery characteristics of Fe-Mn-Si shape memory alloy. Based on that, Fe-Mn-Si shape memory alloy (SMA) anti-loosening bolt was processed, and its loose torque was increased by axial and radial restoring force generated in the process of heating. The anti-loosening experiment of the Fe-Mn-Si SMA bolt matching the common nut shows that the loose torque of pre-strain bolt increases with the increment of temperature, when the temperature is up to 500°C, the loose torque is 3 times than that of common bolt, which
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KUMAKURA, Susumu. "Studies on Self-loosening Mechanism of Bolt Nut Units (3rd Report)-Considerations Taking into Account the Deformations of Bolt and Nut Subjected to Relatively Small Load-." Journal of the Japan Society for Precision Engineering 69, no. 12 (2003): 1801–6. http://dx.doi.org/10.2493/jjspe.69.1801.

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Kim, Jung, Mohiuddin Shourav, Myoung-Ock Cho, and Yein Lee. "Nut and Bolt Microfluidics with Helical Minichannel for Counting CD4+ T-Cells." Bioengineering 6, no. 1 (2019): 24. http://dx.doi.org/10.3390/bioengineering6010024.

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In this study, we developed the prototype of an optical imaging-based point-of-care (POC) device for monitoring human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) progression that can detect CD4+ T-lymphocytes in human blood. The proposed portable cell-counting system, Helios CD4 Analyzer (Helios), can acquire sample images and analyze the cells automatically using a simple fluorescence imaging module and sample cartridge with a three-dimensional (3D) helical minichannel. The helical minichannel formed on the cylindrical surface enables the sample cartridge to hold a
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Wang, Liquan, Caidong Wang, and Jun Liu. "Error analysis and prototype testing of deepwater pipe flange connection tool." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 228, no. 11 (2013): 1978–93. http://dx.doi.org/10.1177/0954406213512927.

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The key factor for underwater petroleum pipeline flange connection tool is its 20 bolts synchronous lead-in nuts. The alignment accuracy of bolts and nuts is critical for bolts lead-in nuts. In order to analyze the accuracy and design issues of the pipeline flange connection tool, the robot kinematics modeling method is adopted. Using the multi-body kinematics theory to homogeneous transformation matrix, the error model of deepwater pipe flange connection tool is established through total differential of the machinery pose transformation matrix. The error model of the tool is established by co
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Zhang, Yanfeng, Zhengong Zhou, and Zhiyong Tan. "Experimental and Finite Element Research on the Failure Mechanism of C/C Composite Joint Structures under Out-of-Plane Loading." Materials 12, no. 18 (2019): 2922. http://dx.doi.org/10.3390/ma12182922.

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The loading and the failure mode of metal hexagon bolt joints and metal counter-sunk bolt joints of C/C composites were investigated. The joints were tested for out-of-plane loading at two temperatures (600 °C and 800 °C). The failure morphology of a lap plate was investigated, and the main failure modes were determined. The typical load–displacement curve was characterized and the test was simulated using ABAQUS non-linear finite element software. Furthermore, progressive damage was induced, and comparison of the finite element simulation with the experimental data revealed that the failures
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Guo, Peixuan, Hiroyuki Noji, Christopher M. Yengo, Zhengyi Zhao, and Ian Grainge. "Biological Nanomotors with a Revolution, Linear, or Rotation Motion Mechanism." Microbiology and Molecular Biology Reviews 80, no. 1 (2016): 161–86. http://dx.doi.org/10.1128/mmbr.00056-15.

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SUMMARYThe ubiquitous biological nanomotors were classified into two categories in the past: linear and rotation motors. In 2013, a third type of biomotor, revolution without rotation (http://rnanano.osu.edu/movie.html), was discovered and found to be widespread among bacteria, eukaryotic viruses, and double-stranded DNA (dsDNA) bacteriophages. This review focuses on recent findings about various aspects of motors, including chirality, stoichiometry, channel size, entropy, conformational change, and energy usage rate, in a variety of well-studied motors, including FoF1ATPase, helicases, viral
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Dissertations / Theses on the topic "Nut-and-bolt mechanism"

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Katsamba, Panayiota. "Biophysics of helices : devices, bacteria and viruses." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/283006.

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A prevalent morphology in the microscopic world of artificial microswimmers, bacteria and viruses is that of a helix. The intriguingly different physics at play at the small scale level make it necessary for bacteria to employ swimming strategies different from our everyday experience, such as the rotation of a helical filament. Bio-inspired microswimmers that mimic bacterial locomotion achieve propulsion at the microscale level using magnetically actuated, rotating helical filaments. A promising application of these artificial microswimmers is in non-invasive medicine, for drug delivery to tu
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Book chapters on the topic "Nut-and-bolt mechanism"

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Strizhak, Viktor, and Igor Penkov. "Distribution of Axial Load on Bolt and Nut Threads." In International Symposium on History of Machines and Mechanisms Proceedings HMM 2000. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9554-4_11.

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Conference papers on the topic "Nut-and-bolt mechanism"

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Shoji, Yasumasa, and Toshiyuki Sawa. "Analytical Research on Mechanism of Bolt Loosening Due to Lateral Loads." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71333.

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It is well known that bolted joints are loosened when lateral loads are applied after they are tightened. This phenomenon is proved by experiments or by the real operations, but the mechanism is not yet elucidated why the bolts are loosened. In this paper several finite element analyses were performed and reproduced the phenomenon that the bolts are loosened, or the nut rotates, when the lateral loads are applied. Based on this result, the mechanism of the bolt loosening (the nut rotation) is investigated. Additionally, it is also examined that bolts are more difficult to be loosened when doub
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Shoji, Yasumasa, and Toshiyuki Sawa. "Self-Loosening Mechanism of Nuts Due to Cyclic Thermal Load." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77447.

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Self-loosening of nuts is a practical problem in any situations from a single machine to a whole plant. Self-loosening of threaded bolt/nut systems has been researched in number of works for a long time and many of them were based on experiment historically. Some works based on finite element analysis are increasing in these years. Authors have reported the static loosening of nut due to the lateral motion and dynamic loosening due to the lateral impact of fastened objects in PVP conferences using finite element analyses, and showed the loosening mechanism. This paper is a continuing research
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Wang, Ziqin, and Yanyao Jiang. "Study of a Major Mechanism for Self-Loosening of Bolted Joints." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93463.

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A recent three-dimensional (3-D) finite element (FE) investigation on self-loosening of bolted joints revealed that two major mechanisms were responsible for the second-stage (nut rotation) self-loosening of bolted joints. One of the mechanisms is the slip-stick contact of the thread surfaces under the combined contact pressure and reversed bending moment exerted from the reversed transverse loading. The current investigation is a detailed study of the slip-stick contact of the thread surfaces with models that mimic the bolt loading condition. The contact pressure and the reversed bending mome
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Shoji, Yasumasa, and Toshiyuki Sawa. "Self-Loosening Mechanism of Nuts Due to Impacts." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61221.

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As self-loosening of nuts is really a problem for bolted joints in practical use, countermeasures for the loosening is highly required. In this situation non-loosening fasteners are one of the resolutions for any fastened machinery as an essential mechanical element. Self-loosening of threaded bolt/nut systems has been researched in number of works and many of them were based on experiments historically and some were based on the finite element analyses in these years. Authors have reported the static loosening of nut due to the transverse motion of fastened objects in PVP conferences using fi
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Fujioka, Yasuo, and Tomotsugu Sakai. "Rotating Loosening Mechanism of Nut Connecting Rotary Disc Under Rotating-Bending Force." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42215.

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There are fastened structures composed of rotary disc and shaft, which are fastened with bolts and nuts with tapered bearing surfaces. Those are loaded with rotating-bending force. It has been difficult to explain clearly the rotating loosening mechanism of such joint’s nuts by the previously proposed mechanism. In this study, the rotating mechanism of this nut was investigated from theoretical and experimental view points. Finally two types of mechanisms were derived. One is as follows: High pressure contact area is formed by external load oriented in the radial direction of a disc. It gives
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Ishimura, Mitsutoshi, Shunichiro Sawa, Yuya Omiya, and Toshiyuki Sawa. "Mechanism of Screw Thread Loosening in Bolted Joints With Dissimilar Clamped Parts Under Repeated Temperature Changes." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38077.

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It is well known that bolted joints are sometimes loosened under transverse repeated loadings. Recently, some studies have been carried out on the mechanism of the bolt loosening under transverse repeated loadings. In the present research, the mechanism of bolt loosening was examined for a bolted joint using Junker’s type loosening test machine under transverse repeated loadings. Furthermore, a rotational deformation of bolt axis and nut was analyzed using FEM. As a result, it is found that the rotational load is applied and the bolt loosening occurs due to the deformation between the bolt axi
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Shoji, Yasumasa, Toshiyuki Sawa, and Hiroshi Yamanaka. "Self-Loosening Mechanism of Nuts Due to Lateral Motion of Fastened Plate." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26409.

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As self-loosening of nuts is really a problem for bolted joints in practical use, countermeasures for the loosening is highly required. In this situation non-loosening fasteners are one of the resolutions for any fastened machinery as an essential mechanical element. Self-loosening of threaded bolt/nut systems has been researched in number of works and most researches were based on experiment and a few were based on the finite element analysis in these years. Using this new approach, various types of nuts can also be examined. Among these nuts eccentric nuts and slit nuts are especially expect
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Ishimura, Mitsutoshi, Toshiyuki Sawa, Atsushi Karami, and Takanori Nagao. "Bolt-Nut Loosening in Bolted Flange Connections Under Repeated Bending Moments." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25326.

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Bolted flange connections for wind power generations and chemical plants are subjected to repeated bending moments due to wind and earthquake loads. It is known empirically that the bolts loosening in the bolted connections occur. Thus, it is necessary to examine the bolt loosening in the bolted flange connections under repeated bending moments. The objective of the present paper is to clarify the mechanism of bolt loosening in bolted flange connections subjected to repeated bending moments and to discuss on a solution for preventing the loosening of the bolted flange connections subjected to
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Sawa, Shunichiro, Mitsutoshi Ishimura, Toshiyuki Sawa, and Takanori Nagao. "Bolt Loosening Behavior of Bolted Joints Under Repeated Transverse Loads." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70515.

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The objective of the paper is to examine bolt loosening behavior in a bolted joint under transverse loading both experimentally and numerically. Bolt loosening tests were carried out using Junker’s type loosening machine. In the Junker’s loosening tests, repeated transverse displacements (displacement range S = ±0.35mm were applied to a bolted joint with a M10 hexagon bolt and nut, and then a reduction in the axial bolt force was measured. In the FEM calculations, bolt loosening behavior was examined for a model of Junker’s type loosening machine. In addition, the effects of the flatness and t
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Sawa, Toshiyuki, Mitsutoshi Ishimura, Yasumasa Shoji, and Yusuke Fukuba. "Mechanical Behavior of Rotational Screw Thread Loosening in Bolted Joints Under Repeated Temperature Changes." In ASME 2008 Pressure Vessels and Piping Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/pvp2008-61690.

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Bolted joints have been used in mechanical structures. However, loosening accidents sometimes happen under several types of loadings. Recently, some studies have been conducted on the screw thread loosening in bolted joints. It is verified that bolted joints are loosened when transverse repeated loadings are applied. A lot of parts for preventing the loosening in the joints have been proposed. Among these parts, eccentric nut is especially expected to be the solution for preventing the loosening. Some studies on no rotational loosening in bolted joints under thermal changes have also conducted
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