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The purpose of the work was analytical research and computer modeling of the influence of shape and size of console beams of elastic plates in non-base configurations for the cam of the automatic half-hose machine under the conditions of flexibility, strength, and minimization of sizes. The scientific novelty of the work lies in the further development of the theory and methodology of designing the elements of knitting systems of the automatic half-hose machines based on regimes of loading, limitations in strength and dimensions, as well as requirements of the technological process. In order to increase the flexibility of the elastic plate, the symmetrical introduction of two console beams of trapezoidal shape was proposed. The influence exerted by the coefficient of the shape of console beams and their lengths on the magnitudes of deflections and stresses was analyzed, which allows making grounded and flexible decisions regarding the dimensions of the root and the end sections of the beams at the preliminary stage of design. The mathematical support was presented mainly in an explicit form, which simplified the analysis of the influence of controlled dimensions of the elastic plates on their flexibility and strength, as well as contributes to the comprehensive approach to the development of cams of different constructions with elastic plates and allows improving the quality and efficiency of design solutions of cams. The beam bending theory and the finite element method based on Code_Aster shared software were used. The model of the plate was represented by an ordered grid of finite nodal elements of the same size, without the use of elongated and flat elements. According to the results of simulation experiments, the distributions of deformations and stresses on the surface of the elastic plate of the cam were obtained, depending on its shape and size, which confirmed the validity of calculated recommendations.
Wydawca
Rocznik
Tom
Strony
92--98
Opis fizyczny
Bibliogr. 27 poz., fig.
Twórcy
autor
- Kyiv National University of Technologies and Design, 2 Nemyrovycha-Danchenka Street, 01011 Kyiv, Ukraine
autor
- G.S. Pisarenko Institute for Problems of Strength of the National Academy of Sciences of Ukraine, 2 Timiryazevs’ka str., 01014 Kyiv, Ukraine
autor
- Kyiv National University of Technologies and Design, 2 Nemyrovycha-Danchenka Street, 01011 Kyiv, Ukraine
autor
- Khmelnytskyi National University, 11, Instytuts’ka str., Khmelnytskyi, 29016, Ukraine
autor
- National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, 37, Prosp. Peremohy, 03056 Kyiv, Ukraine
autor
- Kyiv National University of Technologies and Design, 2 Nemyrovycha-Danchenka Street, 01011 Kyiv, Ukraine
Bibliografia
- 1. Berezin L.M. Evaluation of the durability and reliability of knitting mechanisms of automatic half-hose machines. Kyiv: KNUTD, 2012, 191.
- 2. Gaidamaka V.K., Krasovskyi A.Y., Kramarenko I.V. The causes and the nature of destruction of the needles of knitting machines. The problems of strength, 1983, 3, 68–71.
- 3. Neumann H. Betrachtung von nadelstớrungen ihre entstehung und auswirkungen. Melliand Textilberichte, 1975, 5, 372–376.
- 4. Duru S.C., Candan C., Mugan A. Effect of yarn, machine and knitting process parameters on the dynamics of the circular knitting needle. Textile Research Journal, 2015, 85(6), 568–589.
- 5. Jurgens R., Pestel K. Er fassung der dynamischen belstung des nadelfasses beim strickprozess. Textiltecnik, 1982, 5, 287–290.
- 6. Lau TWY and Knapton JF. The design and dynamics of nonlinear cams for use in high speed weft knitting machines Part II: The analysis of knitting yarn tensions with non-linear cams theoretical dynamics of non-linear cams. Journal Textil Institute, 1978, 69, 169–175.
- 7. Budulan C., Andriesan L. Systemes non-lineares de cames pour des machines a tricoter circulaires interlocr a 96 systemes. Buletinul Institutului Politehnic din Iaşi, 1984, 1, 63–72.
- 8. Oldham K, Burns ND and Simms GJ. Non-linear cams for weft-knitting machines. Journal Textil Institute, 1985, 1, 30–37.
- 9. Jian-qiao J., Xiao-jian M. An analysis on the dynamic characteristics of the cam of flat knitting machine and its optimised design. Knitting Industries, 2006–03.
- 10. Song G., Li Y., Wu J. A study on the optimum design of non-linear cam profiles in weft-knitting machines. Journal of the Textile Institute, 2004, 95, 171–182.
- 11. Simms G.J., Oldham K., Burns N.D. Application of CAD to knitting machine design. Journal Computer-Aided Design, 1983, 15(2), 89–97.
- 12. Pipa B.F., Pleshko S.A. Improvement of working bodies of mechanisms of knitting circular knitting machines. Kyiv: KNUTD, 2012, 471.
- 13. Berezin L.M. Calculation of the flexibility plate of the cam according to the criterial of rigidity and longevity. Bulletin of the Kyiv National University of Technologies and Design, 2016, 3, 68–73.
- 14. Berezin L.M., Savchenko K.V. Modelling of a flexible grinder of a complex shape form on the criteria of deformation and strength. Herald of Khmelnytskyi national university, 2019, 6, 24–27.
- 15. Suriyaninov N.G., Vlazneva A.Yu. Calculation of leaf springs of variable stiffness. Proceedings of the Odessa National Polytechnic University, 2009, 1, 19–23.
- 16. Kochetov V.T., Kochetov M.V., Pavlenko A.D. Strength of materials. Saint Petersburg: BKhV-Peterburg, 2004, 544.
- 17. Nyashin Yu.I., Osipenko M.A., Gitman M.B. Equally stressed leaf springs. Vestnik of Nosov Magnitogorsk State Technical University, 2014, 4, 22–26.
- 18. Pavlovskyi M.A. Theoretical mechanics. Kyiv: Tekhnika, 2002, 510.
- 19. Rabotnov Yu.N. Mechanics of a deformable solid. Moscow: Nauka, 1988, 712.
- 20. Troshchenko V.T., Sosnovskiy L.A. Fatigue Strength of Metals and Alloys. Kyiv: Naukova Dumka, 1987, 808.
- 21. GOST 801–78. Stal’ podshipnikovaya. Tekhnicheskie usloviya. [State Standart 801–78. Bearing steel. Specifications]. Moscow, Standartinform Publ., 1978, 43 р.
- 22. Polilov A.N., Tatus N.A., Tian Xiaoyong. Shaped and branched analogs of triangle multi-leaf spring. PNRPU Mechanics Bulletin, 2008, 4, 209–222.
- 23. Berezin L.M. To the calculation of the geometric parameters of flexible facets of cams. Bulletin of the Kyiv National University of Technologies and Design, 2019, 5, 9–16.
- 24. Suriyaninov N.G., Pavlenko I.V. Calculation of plates by numerical-analytical method of boundary elements. LAB LAMBERT Academic Publishing, Germany, 2013, 178.
- 25. Semnani D., Matin K., Sheikhzadeh M., Latifi M. Automation of stitch length cams in high speed flat weft knitting machines: Online control system and numerical modeling method. International Journal of Applied Engineering Research, 2008, 3(6), 763–772.
- 26. Aubry J.P. Beginning with Сode_aster. Paris, France, 2013, 329.
- 27. Code_Aster, https://www.code-aster.org/V2/spip. ph-p?rubrique2 (available at 20.09.2020).
Uwagi
Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-85ef35b6-f83d-4c45-a28b-7f6e2b8c62d5