Simulation of ultimate strength characteristics of the woven composites on the polymeric binder with dispersed antifrictional additives
UDC
539.3 : 621.891; 678.5Abstract
The composites on the polymeric binder with dispersed polytetrafluorethylene and graphite additives, reinforced with fiberglass of E-glass, are considered. The epoxy resins ED-20, EHD and UP-610 are used as a matrix. Numerical simulation is carried out and the relations of limit values of strength characteristics of specified composites on the concentration of fillers (in compressing in the perpendicular direction to grain fiberglass) are investigated. The original method of prediction of strength properties of matrix composites is used in simulation, by which the enclosed to composite compressive unidirectional load becomes destructive only in case, when matrix internal stress exceeds the matrix strength limit. The specified method is based on generalized singular approximation of random fields' theory and information about matrix strength properties. The simulation basis is based on the operator of stresses concentration (tensor of the fourth rank), which connects local (internal) values of stresses tensor with average (external) on material stresses. The simulation found that the increase in the percentage of fiberglass leads to a significant improvement in strength characteristics of composites, dependency is monotonous and non-linear. It has been shown that the increase of graphite concentration leads to intensification, and the increase in the percentage of polytetrafluorethylene, on the contrary, leads to a weakening of the strength characteristics of the model composites, which then changed in the law, close to linear. It is found that the model composites with graphite as antifrictional filler have greater strength than similar materials in which the polytetrafluorethylene is used as antifrictional component (regardless of the type of polymeric binder).
Keywords:
simulation, matrix composites, operator of stresses concentration, mechanical strength, antifrictional materials, inclusions, epoxy matrixFunding information
Работа выполнена при финансовой поддержке грантов РФФИ (16-08-00262-а, 14-08-00654-а).
References
- Машков Ю.К., Овчар З.Н., Байбарацкая М.Ю., Мамаев О.А. Полимерные композиционные материалы в триботехнике. М.: Недра, 2004. 261 с. [Mashkov Yu.K., Ovchar Z.N., Baybaratskaya M.Yu., Mamaev O.A. Polimernye kompozicionnye materially v tribotehnike [Polymer composite materials in tribotechnics]. Moscow, Nedra Publ., 2004, 261 p. (In Russian)]
- Колесников В.И., Бардушкин В.В., Яковлев В.Б., Сычев А.П., Колесников И.В. Микромеханика поликристаллов и композитов (напряженно-деформированное состояние и разрушение). Ростов-на-Дону: Изд-во РГУПС, 2012. 288 с. [Kolesnikov V.I., Bardushkin V.V., Yakovlev V.B., Sychev A.P., Kolesnikov I.V. Mikromehanika polikristallov i kompozitov (naprjazhenno-deformirovannoe sostojanie i razrushenie) [Micromechanics of polycrystals and composites (stress-strain state and destruction)]. Rostov-on-Don, Rostov State Transport University Publ., 2012, 288 p. (In Russian)]
- Buryachenko V.A. Micromechanics of heterogeneous materials. Berlin: Springer - Verlag, 2007. 686 p.
- Бардушкин В.В., Сычев А.П., Сычев А.А., Даньков В.В. Эффективные упругие характеристики тканых композитов на полимерной основе с антифрикционными дисперсными добавками // Вестник Южного научного центра РАН. 2013. Т. 9. № 4. С. 26-31. [Bardushkin V.V., Sychev A.P., Sychev A.A., Dan'kov V.V. Jeffektivnye uprugie harakteristiki tkanyh kompozitov na polimernoj osnove s antifrikcionnymi dispersnymi dobavkami [Effective elastic characteristics of the woven composites on the polymeric binder with dispersed antifriction additives]. Vestnik Yuzhnogo nauchnogo tsentra RAN [Bulletin of the Southern Research Center of the RAS], 2013, vol. 9, no. 4, pp. 26-31. (In Russian)]
- Березин А.В., Козинкина А.И. Особенности диагностики повреждений и оценки прочности композитов // Механика композиционных материалов и конструкций. 1999. Т. 5. № 1. С. 99-120. [Berezin A.V., Kozinkina A.I. Osobennosti diagnostiki povrezhdenij i ocenki prochnocti kompozitov [The features of damage diagnostics and estimation of the strength of the composites]. Mehanika kompozicionnyh materialov i konstrukcij [Mechanics of Composite Materials and Structures], 1999, vol. 5, no. 1, pp. 99-120. (In Russian)]
- Колесников В.И., Бардушкин В.В., Яковлев В.Б., Сычев А.П., Кириллов Д.А., Сорокин А.И. О методе прогнозирования предельных прочностных характеристик матричных композитов, основанном на использовании оператора концентрации напряжений // Экологический вестник научных центров Черноморского экономического сотрудничества. 2014. № 1. С. 45-51. [Kolesnikov V.I., Bardushkin V.V., Yakovlev V.B., Sychev A.P., Kirillov D.A., Sorokin A.I. O metode prognozirovanija predel'nyh prochnostnyh harakteristik matrichnyh kompozitov, osnovannom na ispol'zovanii operatora koncentracii naprjazhenij [About a method of predicting of ultimate strength characteristics of the matrix composites, based on use of the operator of stresses concentration]. Ekologicheskiy vestnik nauchnykh tsentrov Chernomorskogo ekonomicheskogo sotrudnichestva [Ecological Bulletin scientific centers of the Black Sea Economic Cooperation], 2014, no. 1, pp. 45-51. (In Russian)]
- Шермергор Т.Д. Теория упругости микронеоднородных сред. М.: Наука, 1977. 399 с. [Shermergor T.D. Teorija uprugosti mikroneodnorodnyh sred [Micromechanics of inhomogeneous medium]. Moscow, Nauka Publ., 1977, 399 p. (In Russian)]
- Победря Б.Е., Горбачев В.И. Концентрация напряжений и деформаций в композитах // Механика композитных материалов. 1984. № 2. С. 207-214. [Pobedrya B.E., Gorbachev V.I. Koncentracija naprjazhenij i deformacij v kompozitah [Concentration of stresses and deformations in the composites]. Mehanika kompozitnyh materialov [Mechanics of Composite Materials], 1984, no. 2, pp. 207-214. (In Russian)]
- Маслов Б.П. Концентрация напряжений в изотропной матрице, армированной анизотропными включениями // Прикладная механика. 1987. Т. 23. № 10. С. 73-79. [Maslov B.P. Koncentracija naprjazhenij v izotropnoj matrice, armirovannoj anizotropnymi vkljuchenijami [Concentration of stresses in an isotropic matrix reinforced anisotropic inclusions]. Prikladnaja mehanika [Applied Mechanics], 1987, vol. 23, no. 10, pp. 73-79. (In Russian)]
- Бардушкин В.В., Яковлев В.Б., Колесников И.В., Сычев А.П., Сычев А.А., Флек Б.М. Концентрация напряжений и деформаций в антифрикционных тканых композитах // Трение и смазка в машинах и механизмах. 2013. № 3. С. 7-13. [Bardushkin V.V., Yakovlev V.B., Kolesnikov I.V., Sychev A.P., Sychev A.A., Flek B.M. Koncentracija naprjazhenij i deformacij v antifrikcionnyh tkanyh kompozitah [Stress and strain concentration in the antifrictional woven composites]. Trenie i smazka v mashinah i mehanizmah [Friction and lubrication in machinery], 2013, no. 3, pp. 7-13. (In Russian)]
- Колесников В.И., Яковлев В.Б., Бардушкин В.В., Сычев А.П. О прогнозировании распределений локальных упругих полей в неоднородных средах на основе обобщенного сингулярного приближения // Вестник Южного научного центра РАН. 2015. Т. 11. № 3. С. 11-17. [Kolesnikov V.I., Yakovlev V.B., Bardushkin V.V., Sychev A.P. O prognozirovanii raspredelenij lokal'nyh uprugih polej v neodnorodnyh sredah na osnove obobschennogo singuljarnogo priblizhenija [On the prediction of local elastic fields' distributions in non-uniform media on the basis of a generalized singular approximation]. Vestnik Juzhnogo nauchnogo centra RAN [Bulletin of the Southern Research Center of the RAS], 2015, vol. 11, no. 3, pp. 11-17. (In Russian)]
- Лапицкий В.А., Крицук А.А. Физико-механические свойства эпоксидных полимеров и стеклопластиков. Киев: Наукова думка, 1986. 92 с. [Lapitsky V.A., Kricuk A.A. Fiziko-mehanicheskie svojstva jepoksidnyh polimerov i stekloplastikov [Physical and mechanical properties of the epoxy polymers and fiberglasses]. Kiev, Naukova Dumka Publ., 1986, 92 p. (In Russian)]
- Гутников С.И., Лазоряк Б.И., Селезнев А.Н. Стеклянные волокна. М.: Изд-во МГУ, 2010. 53 с. [Gutnikov S.I., Lazorjak B.I., Seleznev A.N. Stekljannye volokna [Glass fibers]. Moscow, Moscow State University Publ., 2010, 53 p. (In Russian)]
- Паньков А.А. Методы самосогласования механики композитов. Пермь: Изд-во ПГТУ, 2008. 253 с. [Pan'kov A.A. Metody samosoglasovanija mehaniki kompozitov [Methods of self-consistency mechanics of composites]. Perm, Perm State Technical University Publ., 2008, 253 p. (In Russian)]
Downloads
Downloads
Dates
Submitted
Accepted
Published
How to Cite
License
Copyright (c) 2016 Бардушкин В.В., Сычев А.П., Кириллов Д.А., Сорокин А.И.
This work is licensed under a Creative Commons Attribution 4.0 International License.
