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Relevant bibliographies by topics / Compression spring

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Academic literature on the topic 'Compression spring'

Author: Grafiati

Published: 4 June 2021

Last updated: 30 May 2022

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Journal articles on the topic "Compression spring"

1

Simons, Anthony, Gideon Quartey, and Nathaniel Frimpong Asante. "Conceptual Design and Finite Element Fatigue Life Analysis of a Poppet Valve Spring Compressor." Journal of Engineering 2020 (August 17, 2020): 1–7. http://dx.doi.org/10.1155/2020/6270810.

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In the overhauling of the internal combustion engine, a lot of tools are used and among them is the poppet valve spring compressor. In Ghana, auto mechanics at the “way-side” garages make use of improvised tools, such as pipes, pliers, and push rods, for compressing valve springs. However, there are some challenges associated with the usage of these tools which include misplacement of cotters, injuries, and sometimes valve bends. In this work, a review of some of the existing designs of the improvised tools was considered. Also, a survey was conducted to seek the opinion of users (auto technicians and/or mechanics) of the tools. A design was made for spring compression by incorporating a magnet with a pull force of 679.78 N to take care of the removal of cotters during valve assembly dismantling. In this research, an efficient and user-friendly poppet valve spring compression tool with a total mass of 0.88 kg was designed. Finite element analysis (FEA) was performed on the upper and lower parts of the tool to examine its response due to the loads that act on it during operation. It was discovered from the analysis that the upper frame of the valve spring compressor experienced the highest von Mises stress of 59.77 MPa at the neck region, whilst the corresponding fatigue analysis showed a maximum fatigue life of 8.355 × 109 cycles.

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Muralidharan, M., R. Aravinth, J. Gafferkhan, and R. Gandhi. "Comparative Design and Analysis of Helical and Wave Spring." International Journal of Engineering & Technology 7, no. 3.34 (September 1, 2018): 353. http://dx.doi.org/10.14419/ijet.v7i3.34.19224.

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This paper is a comparative between two springs such as helical and wave spring. Wave springs are precise flat wire compression springs that fit into assemblies that other springs cannot. These are used as an alternative spring for helical spring. Wave springs provide 50% reduction in spring height and axial space. They possess the same force and deflection as coil springs. They have reduced material requirements. They provide improved cost reduction. The Wave Spring has been subjected to Compression Test, Modal Analysis and Equivalent Elastic Strain Test and then compared to Helical Spring which again was subjected to the above same tests under the same conditions and parameters. The design of helical spring and wave spring has been done in CREO Parametric 4.0 and analysed in ANSYS R 18.1. The results are then compared.

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Razooqi, Ahmed Ibrahim, Hani Aziz Ameen, and Kadhim Mijbel Mashloosh. "Compression and impact characterization of helical and slotted cylinder springs." International Journal of Engineering & Technology 3, no. 2 (May 21, 2014): 268. http://dx.doi.org/10.14419/ijet.v3i2.2492.

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Helical and slotted cylinder springs are indispensable elements in mechanical engineering. This paper investigates helical and slotted cylinder springs subjected to axial loads under static and dynamic conditions. The objective is to determine the stiffness of a circular cross-section helical coil compression spring and slotted cylinder springs with five sizes and dynamic characteristics. A theoretical and finite element models are developed and presented in order to describe the various steps undertaken to calculate the springs stiffnesses. Five cases of the springs geometric are presented. A finite element model was generated using ANSYS software and the stiffness matrix evaluated by applying a load along the springs axis, then calculating the corresponding changes in deformation. The stiffness is obtained by solving the changes of load and deformation. The natural frequencies, mode shapes and transient response of springs are also determined. Finally, a comparison of the stiffnesses are obtained using the theoretical methods and those obtained from the finite element analysis were made and good agreement are evident and it can be found that the stiffness of spring for the slotted cylinder spring is much larger than that for helical spring and the stiffness for slotted cylinder spring increases with the number of slots per section. Natural frequencies, mode shape and transient response of helical spring and slotted cylinder spring have been represented in ANSYS software and results have been compared and it found that the natural frequency has also increased in the same proportion of stiffness because the natural frequency is directly proportional to the stiffness for all the cases that have been studied. Keywords: ANSYS, Finite Element Analysis, Helical Spring, Slotted Cylinder Spring, Stiffness.

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Chandak, Shubham, Kedar Tatwawadi, Idoia Ochoa, Mikel Hernaez, and Tsachy Weissman. "SPRING: a next-generation compressor for FASTQ data." Bioinformatics 35, no. 15 (December 7, 2018): 2674–76. http://dx.doi.org/10.1093/bioinformatics/bty1015.

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Abstract Motivation High-Throughput Sequencing technologies produce huge amounts of data in the form of short genomic reads, associated quality values and read identifiers. Because of the significant structure present in these FASTQ datasets, general-purpose compressors are unable to completely exploit much of the inherent redundancy. Although there has been a lot of work on designing FASTQ compressors, most of them lack in support of one or more crucial properties, such as support for variable length reads, scalability to high coverage datasets, pairing-preserving compression and lossless compression. Results In this work, we propose SPRING, a reference-free compressor for FASTQ files. SPRING supports a wide variety of compression modes and features, including lossless compression, pairing-preserving compression, lossy compression of quality values, long read compression and random access. SPRING achieves substantially better compression than existing tools, for example, SPRING compresses 195 GB of 25× whole genome human FASTQ from Illumina’s NovaSeq sequencer to less than 7 GB, around 1.6× smaller than previous state-of-the-art FASTQ compressors. SPRING achieves this improvement while using comparable computational resources. Availability and implementation SPRING can be downloaded from https://github.com/shubhamchandak94/SPRING. Supplementary information Supplementary data are available at Bioinformatics online.

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Cadet, Guillaume, Manuel Paredes, and Hervé Orcière. "Improved analytical model for cylindrical compression springs not ground considering end behavior of end coils." Mechanics & Industry 22 (2021): 50. http://dx.doi.org/10.1051/meca/2021048.

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In a context of increased competition, companies are looking to optimize all the components of their systems. They use compression springs with constant pitch for their linear force/length relationship. However, it appears that the classic formula determining the global load-length of the spring is not always accurate enough. It does not consider the effects of the spring's ends, which can induce non-linear behaviour at the beginning of compression and thus propagate an error over the full load-length estimated. The paper investigates the entire behaviour of a cylindrical compression spring, not ground, using analytical, simulation and experimental approaches in order to help engineers design compression springs with greater accuracy. It is built with an analytical finite element method, considering all the geometry and force components of the spring. As a result, the global load-length of compression springs can be calculated with more accuracy. Moreover, it is now possible to determine the effective tri-linear load-length relation of compression springs not ground and thus to enlarge the operating range commonly defined by standards. This study is the first that enables the behaviour to be calculated quickly, by saving time on dimensioning optimisation and on the manufacturing process of compression springs not ground.

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Middelkoop, Courtney, and Richard Stone. "Gymnastics Vault Board Design: A Comparison of Spring Configuration and Style of Spring – Preliminary Study." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 63, no. 1 (November 2019): 1354–57. http://dx.doi.org/10.1177/1071181319631439.

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The goal of this study is to analyze the gymnastics vault board spring configuration to provide insight for a follow-up study to compare a traditional compression springboard with a new leaf springboard design. Traditionally, during the vaulting apparatus, gymnasts use a compression springboard to propel themselves onto the vaulting table to perform their routine. However, a new innovative leaf spring design has been produced and little research has been done to evaluate the performance of the springboard. Video recordings were taking during a NCAA Division 1 gymnastics competition. The video captured the gymnast’s interaction with the springboard during their competition vaults. During the gymnastics competition, two vault entry styles were performed, three spring configurations were used, and the number of springs inside the board were either 7 or 8. With the current data, there is no significant evidence that correlates the spring configuration with the performance score of the athlete. However, the maximum amount of compression achieved on the vault board varies from gymnasts and the number of springs and configuration placed in the springboard. Further research should be conducted to investigate the effects of spring configuration and the amount of compression achieved during the vaulting apparatus with two different springboards: the conical springboard design and the leaf spring design.

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Rahat, Muhammad Abu, Muhammad Ferdous Raiyan, MD Safayet Hossain, J. U. Ahamed, and Nahed Hassan Jony. "Design and Fabrication of a Spring Constant Testing Machine and Determination of Spring Constant of a Compression Spring." International Journal of Engineering Research 4, no. 10 (October 1, 2015): 574–78. http://dx.doi.org/10.17950/ijer/v4s10/1013.

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Özen, Fatih, Ahmet İlhan, Hakkı Taner Sezan, Erdinç İlhan, and Salim Aslanlar. "Effect of the galvanization process on the fatigue life of high strength steel compression springs." Materials Testing 63, no. 3 (March 1, 2021): 226–30. http://dx.doi.org/10.1515/mt-2020-0032.

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Abstract In this study, a compression spring fatigue problem arising from the galvanization process was investigated. Fatigue, crack initiation and growth of galvanized and non-galvanized springs manufactured from fully pearlitic high strength steel wires were investigated. According to the results, the galvanized compression springs exhibited a low fatigue life due to hydrogen embrittlement. Hydrogen embrittlement induced crack initiations formed under the galvanizing layer and adversely affect fatigue life. It was observed that local embrittlement on the outer surface of the spring wire causes crack initiations and disperses through the pearlitic interlamellar microstructure. Compared to non-galvanized and shot-peened specimens with the same surface roughness, compression springs, galvanized compression springs exhibited a 25 % reaction force loss at 50 000 cycles.

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Zhang, Shan, Zheng Sun, Jili Lu, Lei Li, Chunlei Yu, and Dongxing Cao. "Spring Effects on Workspace and Stiffness of a Symmetrical Cable-Driven Hybrid Joint." Symmetry 12, no. 1 (January 5, 2020): 101. http://dx.doi.org/10.3390/sym12010101.

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This paper aims to investigate how to determine the basic parameters of the helical compression spring which supports a symmetrical cable-driven hybrid joint (CDHJ) towards the elbow joint of wheelchair-mounted robotic manipulator. The joint design of wheelchair-mounted robotic manipulator needs to consider lightweight but robust, workspace requirements, and variable stiffness elements, so we propose a CDHJ which becomes a variable stiffness joint due the spring under bending and compression provides nonlinear stiffness characteristics. Intuitively, different springs will make the workspace and stiffness of CDHJ different, so we focus on studying the spring effects on workspace and stiffness of CDHJ for its preliminary design. The key to workspace and stiffness analysis of CDHJ is the cable tension, the key to calculate the cable tension is the lateral bending and compression spring model. The spring model is based on Castigliano’s theorem to obtain the relationship between spring force and displacement. The simulation results verify the correctness of the proposed spring model, and show that the spring, with properly chosen parameters, can increase the workspace of CDHJ whose stiffness also can be adjusted to meet the specified design requirements. Then, the modelling method can be extended to other cable-driven mechanism with a flexible compression spring.

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Hajavifard, Ramin, Fawad Maqbool, Anke Schmiedt-Kalenborn, Johannes Buhl, Markus Bambach, and Frank Walther. "Integrated Forming and Surface Engineering of Disc Springs by Inducing Residual Stresses by Incremental Sheet Forming." Materials 12, no. 10 (May 20, 2019): 1646. http://dx.doi.org/10.3390/ma12101646.

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Disc springs are conical annular discs, which are characterized by a high spring force with a small spring travel and good space utilization. In operation, they must meet high demands on the stability of the spring characteristic and the fatigue strength. Under loading, tensile stresses occur which limit the possible applications of disc springs. Compressive stresses can be generated in the stressed areas by means of shot-peening in order to extend the operating limits for a given yield and fatigue strength. Since the spring geometry and characteristics change during shot-peening, the design of the shot-peening treatment is iterative and cumbersome. The present research proposes an incremental forming process for forming and integrated targeted adjustment of residual stresses in disc springs from metastable austenitic stainless steel (MASS), to achieve improved spring properties and high cyclic strength. The main mechanism of residual stress generation is the transformation of metastable austenite into martensite under the action of the forming tool. Different experimental characterization techniques like the hole drilling method, X-ray diffraction, disc compression tests, optical microscopy and cyclic tests are used to correlate the residual stresses and disc spring properties. A numerical model is developed for simulating the martensite transformation in disc springs manufacturing. The results prove that incremental forming enables process-integrated engineering of the desired compressive residual stresses, entailing a higher spring force of metastable austenitic disc springs in comparison to conventional disc springs. Due to martensite formation, the generated residual stresses are stable under cyclic loading, which is not the case for conventionally manufactured springs.

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Dissertations / Theses on the topic "Compression spring"

1

Ma, Huiyuan. "A web based compression spring design calculator /." Compression spring design calculator, 2001. http://wwweng.uwyo.edu/commend/Csdc.

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2

Song, Ju Ho. "Design, analyses and experimental study of a foil gas bearing with compression springs as a compliance support." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1825.

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3

Rueckert, Cheryl B. "Evaluation of preferential energy absorption in earlywood and latewood fibers of loblolly pine in cyclic compression." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/5805.

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Nekoksa, Pavel. "Dosedy válcových šroubových tlačných pružin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231942.

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This diploma thesis deals with hot-formed helical compression springs. The first part of the thesis describes related problems and determines market potential. Following theoretical part describes the influence of contact line on behaviour of springs and compares it with normative regulations. Methods suitable for determination of helix shape are covered in the next part. The last part focuses on practical measurement, in which the change of helix shape during manufacture was observed. The main output of this diplomat thesis is suggestion of measures that should contribute to both optimization of manufacture and verification of FEM model.

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Мальцев, Олександр Сергійович, Александр Сергеевич Мальцев, Oleksandr Serhiiovych Mal'cev, Павло Васильович Кушніров, Павел Васильевич Кушниров, and Pavlo Vasylovych Kushnirov. "Усовершенствование вспомогательных опор станочных приспособлений." Thesis, Юго-Западный государственный ун-т, 2013. http://essuir.sumdu.edu.ua/handle/123456789/43105.

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Допоміжна підвідна опора містить корпус із опорним штирем, що опирається своїм скосом на похилу поверхню клина, стрижень з головкою, що вкручений в глухий нарізний отвір клина, і пружину стиску, що контактує з клином. Кнопка із ступінчастим отвором має можливість переміщатися співвісно зі стрижнем. Поворотна опора може змінювати кут свого нахилу.
Вспомогательная подводимая опора содержит корпус с опорным штырем, который опирается своим скосом на наклонную поверхность клина, стержень с головкой, вкрученный в глухое резьбовое отверстие клина, и пружину сжатия, контактирующую с клином. Кнопка со ступенчатым отверстием имеет возможность перемещаться соосно со стержнем. Поворотная опора может изменять угол своего наклона.
An auxiliary underpinning support comprises a body with a support pin, which is based by its slant on an inclined surface of a wedge, a rod with a head is screwed into a blind threaded hole of the wedge, and a compression spring in contact with the wedge. Button with stepped bore can move axially with the rod. Rotary support can change its angle of inclination.

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Buchelt, Beate, Tobias Dietrich, and André Wagenführ. "Testing of set recovery of unmodified and furfurylated densified wood by means of water storage and alternating climate tests." De Gruyter, 2014. https://tud.qucosa.de/id/qucosa%3A38557.

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Densification is a well-known method for improving the mechanical properties of wood. In the present study, unmodified and furfurylated wood samples were densified and submitted to cyclic water storage tests and cyclic alternating climate tests. Swelling coefficients and spring-back data were determined for the evaluation of the quality of densification. The study shows that results depend on the test method applied. Simple water storage tests do not reflect the behavior of densified wood in the high humidity range. The spring-back data of unmodified samples are more influenced by the testing method than those of the furfurylated ones.

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Vít, Jakub. "Odstředivá brzda motoru pro pneumatikový válec." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232084.

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The aim of my thesis is the design of centrifugal brakes to prevent twisting of the combustion engine with pneumatic compactor. In the first part of my thesis I deal with existing and similar systems that prevent over speeding. In the second part I deal with the design of its own centrifugal brake. This includes basic functional, strength, thermal calculation, design of components and fabrication drawings according to the assignment.

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Barber, Jabulani Randall Timothy. "Mechanical compression of coiled carbon nanotubes." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28216.

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Thesis (M. S.)--Chemistry and Biochemistry, Georgia Institute of Technology, 2009.
Committee Chair: Lawrence Bottomley; Committee Member: Aldo Ferri; Committee Member: E. Kent Barefield; Committee Member: Levent Degertekin; Committee Member: Robert Whetten; Committee Member: Satish Kumar; Committee Member: Zhong Lin Wang.

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Limber, Björn, and Johannes Samuelsson. "Construction of a Micro Compressor for Maintenance Filling of Balancing Gas Springs - from Idea to Prototype." Thesis, Linköping University, Linköping University, Fluid and Mechanical Engineering Systems, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-16639.

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At the gas spring manufacturing company Strömsholmen AB there is the needfor a way to make the load alleviating gas springs more robust, endurable andmaintenance free. A small high pressure compressor with a control systemshould solve these problems. The system would have to raise the pressure in the gas spring if it were to drop under a level and let some pressure out if it were to increase over a certain level. The construction of this Micro Compressor system is presented in this master's thesis. At first, a deeper understanding of the task at hand was gathered resulting in a design specification, followed by a concept study generated by the systematic design method. The evaluation of the concept study resulted in a chosen concept for prototype production. This prototype system consists of a control system with a pressure switch, a pressure reducing valve and a Micro Compressor that raises the pressure when needed. An electric system was also designed to work with the pressure switch, actuating the compressor when needed. Thoughts of converting the Micro Compressor system to pneumatic drive were also considered to increase the scope of use. The prototype system was tested to see that the requirements in the design specification were met and then the project was handed back to Strömsholmen AB for future development together with a list of suggestions of things that need improvement.

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Owen, Michael Information Technology &amp Electrical Engineering Australian Defence Force Academy UNSW. "Temporal motion models for video mosaicing and synthesis." Awarded by:University of New South Wales - Australian Defence Force Academy, 2008. http://handle.unsw.edu.au/1959.4/39028.

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Video compression aims to reduce video file size without impacting visual quality. Existing algorithms mostly use transform coders to convert information from the spatial to frequency domain, and attenuate or remove high frequency components from the sequence. This enables the omission of a large proportion of high frequency information with no discernible visual impact. Sprite-based compression encodes large portions of a scene as a single object in the video sequence, recreating the object in subsequent frames by warping or morphing the sprite to mimic changes in subsequent frames. This thesis sought to improve several aspects of existing sprite based compression approaches, employing a temporal motion model using a low order polynomial to represent the motion of an object across multiple frames in a single model rather than a series of models. The main outcome is the demonstration that motion models used by sprite based video compression can be extended to a full three dimensional model, reducing the overall size of the model, and improving the quality of the sequence at low bit rates. A second outcome is the demonstration that super-resolution processing is not necessary if lanczos spatial interpolation is used instead of bilinear or bi-cubic interpolation, resulting in a savings in computational time and resources. A third outcome is the introduction of a new blending model used to generate image mosaics that improves the quality of the synthesised sequence when zoom is present in the sequence for a given bit-rate. A final outcome is demonstrating that performing superresolution processing and sub-sampling back to the original resolution prior to compression provides benefits in some circumstances.

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Books on the topic "Compression spring"

1

Stredulinsky, David C. SPRING2: Helical compression spring geometry generator program manual. Dartmouth, N.S: Defence Research Establishment Atlantic, 1992.

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2

Becker, Leif Eric. On the buckling of helical compression springs. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1992.

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3

Stredulinsky, David C. Finite element modelling of helical compression springs. Dartmouth, N.S: Defence Research Establishment Atlantic, 1992.

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4

Chassie, Girma Gebre. On the buckling of helical springs under combined compression and torsion. Ottawa: National Library of Canada, 1994.

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5

Joint International Association for Research and Advancement of High Pressure Science and Technology and American Physical Society Topical Group on Shock Compression of Condensed Matter Conference (1993 Colorado Springs, Colo.). High-pressure science and technology, 1993: Proceedings of the joint International Association for Research and Advancement of High Pressure Science and Technology and American Physical Society Topical Group on Shock Compression of Condensed Matter Conference held at Colorado Springs, Colorado, June 28-July 2, 1993. New York: AIP Press, 1994.

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6

The effect of intermittent compression on edema in post-acute ankle sprains. 1990.

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7

T55-L-712 turbine engine compressor housing refurbishment. [Cleveland, Ohio]: National Aeronautics and Space Administration, 1987.

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T55-L-712 turbine engine compressor housing refurbishment. [Cleveland, Ohio]: National Aeronautics and Space Administration, 1987.

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Center, Lewis Research, ed. T55-L-712 turbine engine compressor housing refurbishment. [Cleveland, Ohio]: National Aeronautics and Space Administration, 1987.

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10

Parker, Philip M. The 2007-2012 World Outlook for Precision Mechanical Compression-Type Wire Springs. ICON Group International, Inc., 2006.

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Book chapters on the topic "Compression spring"

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Nirala, Akhileshwar, A. K. Richhariya, N. Kumar, V. K. Dwivedi, and Manohar Singh. "Modeling and Analysis of Composite Helical Compression Spring." In Proceedings of International Conference in Mechanical and Energy Technology, 787–95. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-2647-3_74.

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Joshi, Amol Vikas, Devanand Tayade, and Wasim Patel. "An Experimental Evaluation of FEA-Based Helical Compression Spring to Design a Shock Absorber." In Springer Proceedings in Energy, 299–308. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-6879-1_31.

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Trabelsi, Hassen, Pierre-Alain Yvars, Jamel Louati, and Mohamed Haddar. "Application of the CSP Approach and the Interval Computation for the Optimal Sizing of a Compression Spring." In Lecture Notes in Mechanical Engineering, 613–25. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37143-1_73.

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Slinko, Arkadii. "Compression." In Springer Undergraduate Mathematics Series, 213–28. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-21951-6_8.

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Slinko, Arkadii. "Compression." In Springer Undergraduate Mathematics Series, 235–55. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44074-9_8.

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Brötz, Nicolas, Manuel Rexer, and Peter F. Pelz. "Mastering Model Uncertainty by Transfer from Virtual to Real System." In Lecture Notes in Mechanical Engineering, 35–44. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77256-7_4.

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AbstractTwo chassis components were developed at the Technische Universität Darmstadt that are used to isolate the body and to reduce wheel load fluctuation.The frequency responses of the components were identified with a stochastic foot point excitation in a hardware-in-the-loop (HiL) simulation environment at the hydropulser. The modelling of the transmission behaviour influence of the testing machine on the frequency response was approximately represented with a time delay of $$10\,\mathrm {ms}$$ 10 ms in the frequency range up to $$25\,\mathrm {Hz}$$ 25 Hz . This is considered by a Padé approximation. It can be seen that the dynamics of the testing machine have an influence on the wheel load fluctuation and the body acceleration, especially in the natural frequency of the unsprung mass. Therefor, the HiL stability is analysed by mapping the poles of the system in the complex plane, influenced by the time delay and virtual damping.This paper presents the transfer from virtual to real quarter car to quantify the model uncertainty of the component, since the time delay impact does not occur in the real quarter car test rig. The base point excitation directly is provided by the testing machine and not like in the case of the HiL test rig, the compression of the spring damper calculated in the real-time simulation.

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Sun, Chang Q., and Yi Sun. "Mechanical Compression." In Springer Series in Chemical Physics, 125–46. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0180-2_6.

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Suciu, Claudiu Valentin, and Shuuichi Buma. "On the Structural Simplification, Compact and Light Design of a Vehicle Suspension, Achieved by Using a Colloidal Cylinder with a Dual Function of Absorber and Compression-Spring." In Lecture Notes in Electrical Engineering, 21–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33795-6_3.

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Marin, Cornel. "The First and Second-Order Theory of Shearing and Compression in Case of the Beam Fixed at One End and Supported to Helical Spring at the Other End." In Proceedings of the International Conference of Mechatronics and Cyber-MixMechatronics – 2019, 36–50. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-26991-3_5.

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Tator, Charles H., and Peter Poon. "Acute Clip Impact-Compression Model." In Springer Protocols Handbooks, 449–60. Totowa, NJ: Humana Press, 2009. http://dx.doi.org/10.1007/978-1-60327-185-1_38.

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Conference papers on the topic "Compression spring"

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Gandham, Naresh Kumar, and Hong Zhou. "Synthesis of Concave Helical Compression Springs." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50800.

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Helical compression springs are used to resist compressive forces or store energy in push mode. They are found in many applications that include automotive, aerospace and medical devices. The common configuration of helical compression springs is straight cylindrical shape that has constant coil diameter, constant pitch and constant spring rate. Unlike cylindrical helical compression springs, concave helical compression springs have a larger diameter at each end and a smaller diameter in the middle of the spring. The variable coil diameter enables them to produce desired load deflection characteristics, reduce solid height, buckling and surging, and keep them centered on a larger diameter hole. The unique features of concave helical compression springs also raise their synthesis challenges. In this paper, a method is introduced to synthesize concave helical compression springs. The variable coil diameter of a concave helical compression spring is described by a spline curve. A cylinder with variable diameter is generated by revolving the spline curve on spring axis. The concave helical compression spring is then modeled by wrapping a spring wire on the variable diameter cylinder. The synthesis of a concave helical compression spring is systemized as the optimization of the geometric control parameters of its wrapped spring wire. A synthesis example is presented in the paper to verify the effectiveness and demonstrate the procedure of the introduced method.

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Vandresen, Marcelo, Diovani C. Lencina, Carolina P. Fernandes, Luana N. Silva, Lucas D. P. Feliciano, and Humberto R. Cazangi. "Valve Spring Compression Testing System." In 23rd SAE Brasil International Congress and Display. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2014. http://dx.doi.org/10.4271/2014-36-0230.

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Metwalli, Sayed M., M. Alaa Radwan, and Abdel Aziz M. Elmeligy. "Optimization of Helical Compression and Tension Springs." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0423.

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Abstract The primary objective of spring design is to obtain a spring which will do the required job and at the same time be the most economical for a given application. This means that the spring must fit into the available space and has a satisfactory life in service. The optimum springs would then have minimum weight, minimum length or minimum space. Various optimum values of wire diameter and spring index are obtained. These are evaluated in a closed form or utilizing iterative search techniques. The problem is formulated with and without the variation of the maximum shear stress with the wire diameter. The optimal parameters are also normalized and plotted.

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4

Kerber, Jens, Alexander Belyaev, and Hans-Peter Seidel. "Feature preserving depth compression of range images." In the 23rd Spring Conference. New York, New York, USA: ACM Press, 2007. http://dx.doi.org/10.1145/2614348.2614363.

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Mantiuk, Rafal, Karol Myszkowski, and Sumanta Pattanaik. "Attention guided MPEG compression for computer animations." In the 18th spring conference. New York, New York, USA: ACM Press, 2003. http://dx.doi.org/10.1145/984952.984991.

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Patel, Harshkumar, and Hong Zhou. "Analysis and Synthesis of Conical Coil Springs." In ASME 2021 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/detc2021-69971.

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Abstract Springs are mechanical devices that are employed to resist forces, store energy, absorb shocks, mitigate vibrations, or maintain parts contacting each other. Spring wires are commonly coiled in the forms of helixes for either extension or compression. Helical springs usually have cylindrical shapes that have constant coil diameter, constant pitch and constant spring rate. Unlike conventional cylindrical coil springs, the coil diameter of conically coiled springs is variable. They have conical or tapered shapes that have a large coil diameter at the base and a small coil diameter at the top. The variable coil diameter enables conical coil springs generate desired load deflection relationships, have high lateral stability and low buckling liability. In addition, conical compression springs can have significantly larger compression or shorter compressed height than conventional helical compression springs. The compressed height of a conical compression spring can reach its limit that is the diameter of the spring wire if it is properly synthesized. The height of an undeformed conical coil spring can have its height of its spring wire if the spring pitch is chosen to be zero. The variable coil diameter of conical coil springs provides them with unique feature, but also raises their synthesis difficulties. Synthesizing conical coil springs that require large spring compression or small deformed spring height or constant spring rate is challenging. This research is motivated by surmounting the current challenges facing conical coil springs. In this research, independent parameters are introduced to control the diameter and pitch of a conical coil spring. Different conical coil springs are modeled. Their performances are simulated using the created models. The deflection-force relationships of conical coil springs are analyzed. The results from this research provide useful guidelines for developing conical coil springs.

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Zach, Christopher, Markus Grabner, and Konrad Karner. "Improved compression of topology for view-dependent rendering." In the 20th spring conference. New York, New York, USA: ACM Press, 2004. http://dx.doi.org/10.1145/1037210.1037236.

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8

Keller, Scott G., and Ali P. Gordon. "Stress Approximation Technique for Helical Compression Springs Subjected to Lateral Loading." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-40948.

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Helical compression springs are commonly used devices capable of storing kinetic energy. Typical applications vary in simplicity, ranging from low stress amplitudes and in favorable environments, e.g. ball point pen spring at room temperature, to millions of cycles in elevated temperatures, e.g. valve train spring in IC engines. Regardless of the load or environment, springs are able to use the intrinsic elasticity of the material and the initial geometry to resist plastic deformation, all while allowing for the transfer of load over various distances. Generally, these loads are parallel to the axis of the spring; however, as more complex designs arise, these uniaxial springs are gaining popularity in a variety of off-axis loading situations, e.g. flexible shaft couplings, invalidating traditional stress/strain equations. As such, equivalent stress and strain equations have been developed capable of fast, real-time calculations based upon visual inspection of the bent helix. Coupled with the initial dimensions and material of the spring, the state of equivalent stress/strain can be resolved at any position within the wire. Experiments were conducted on several off-the-shelf steel springs (conforming to ASTM A229), then compared to FEA and analytical solutions. Ultimately, it was observed that through an approximation of the bent helix, the equivalent stress and strain can be determined at any location within the wire, allowing for the approximation of life and crack initiation locations of the spring.

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Tsurushima, Tadashi, Akira Harada, Yuki Iwashiro, Yoshiteru Enomoto, Yasuo Asaumi, and Yuzo Aoyagi. "Thermodynamic Characteristics of Premixed Compression Ignition Combustions." In International Spring Fuels & Lubricants Meeting. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2001. http://dx.doi.org/10.4271/2001-01-1891.

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Zhou, Jian, Guo Chun Wan, and M. M. Li. "A Real-Time Lossless Data Compression Method for Intelligent Train Monitoring System." In 2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring). IEEE, 2019. http://dx.doi.org/10.1109/piers-spring46901.2019.9017263.

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Reports on the topic "Compression spring"

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Blair, S. C. ,. LLNL. Geomechanical properties of Topopah Spring Tuff at the 0.5-m scale: preliminary results of compression tests at elevated temperature. Office of Scientific and Technical Information (OSTI), August 1997. http://dx.doi.org/10.2172/664428.

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2

Martin, R. J. III, P. J. Boyd, J. S. Noel, and R. H. Price. Unconfined compression experiments on Topopah Spring Member tuff at 22{degrees}C and a strain rate of 10{sup {minus}9} s{sup {minus}1}: Data report; Yucca Mountain Site Characterization Project. Office of Scientific and Technical Information (OSTI), August 1993. http://dx.doi.org/10.2172/139793.

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