ПРОГРАММИРУЕМОЕ ПОВЕДЕНИЕ МЕТАМАТЕРИАЛА ПРИ ИЗМЕНЕНИИ СПОСОБА СОЕДИНЕНИЯ ЭЛЕМЕНТАРНЫХ ЯЧЕЕК
Сведения об авторе
- Национальный исследовательский Томский государственный университет, Томск, Россия
Аннотация
Работа посвящена численному анализу одноосного нагружения образца из механического метаматериала. Структура механического метаматериала построена из кольца и четырех связок, составляющих тетрахиральную структуру. Особенность подобной структуры заключена в скручивании образца под силовой нагрузкой. Рассмотрены два метода соединения ячеек в метаматериале «присоединение» и «внахлест». Метод соединения ячеек «присоединение» увеличивает толщину некоторых элементов внутренней структуры образца, что позволяет рассматривать это как топологический дефект метаматериала. Соединение методом «внахлест» позволяет экономить базовый материал, из которого построена тетрахиральная структура. Различия в структуре при построении трехмерного образца приводят к существенному изменению его характеристик. Численное решение задачи осуществляется в трехмерной постановке с использованием метода конечных элементов. Определяющее соотношение, описывающее поведение модели, соответствует закону Гука. Численное моделирование одноосного нагружения образцов позволило получить результаты их механического отклика и проанализировать эффективные свойства метаматериалов. Топологический дефект в виде утолщения элементов внутренней структуры приводит к различию линейных размеров образцов. Увеличенная толщина в местах соединения элементарных ячеек также привела к уменьшению эффективной плотности образца из метаматериала. Этот же образец продемонстрировал тройное увеличение значения модуля упругости. Большая способность к сопротивлению деформированию привела к уменьшению эффекта скручивания по сравнению с образцом, ячейки которого соединялись методом «внахлест». Полученные результаты позволят программировать механическое поведение и свойства образцов из метаматериала.
Ключевые слова
Programmable behavior of the metamaterial by kind unit cells connection
The paper is devoted to the numerical analysis of uniaxial loading of a sample of the mechanical metamaterial. The structure of the mechanical metamaterial is constructed of a ring and four ligaments, which make up a tetrachiral structure. The peculiarity of such a structure consists in torsion of the sample under the force load. Two methods of connecting cells in the metamaterial are considered adjoining and overlapping. The adjoining method of joining cells increases the thickness of the internal structure of the sample, which allows us to consider it as a topological defect of the metamaterial. The overlapping method saves the base material from which the tetrachiral structure is constructed. Differences in the structure when constructing a three-dimensional sample result in a significant change in the characteristics of the sample. Numerical solution of the problem is performed in a three-dimensional formulation using the finite element method. The constitutive relation describing the behavior of the model corresponds to Hooke's law. Numerical simulation of uniaxial loading made it possible to obtain the results of mechanical response and to analyze the effective properties of metamaterials. A topological defect in the form of a thickening of the internal structure elements led to a difference in the linear dimensions of the two samples. The increased thickness of the unit cell connection elements resulted in a decrease in the effective density of the metamaterial sample. The same sample showed a triple increase in the value of the elastic modulus. The greater ability to resist deformation resulted in a reduced twist effect compared to the sample whose cells were joined by the overlapping method. The results obtained will make it possible to program the mechanical behavior and properties of the metamaterial sample.
Keywords
Литература
- 1.A system for designing and 3D printing of porous structures A. Ullah, H. Kiuno, A. Kubo, D.M. D'Addona CIRP Annals. – 2020. – Vol. 69, no. 1. – P. 113–116. DOI 10.1016j.cirp.2020.04.088 Scholar
- 2.Renewable energy harvesting and absorbing via multi-scale metamaterial systems for Internet of things T. Tan, Zh. Yan, H. Zou, K. Ma, F. Liu, L. Zhao, Zh. Peng, W. Zhang Applied Energy. – 2019. – Vol. 254, no. 113717. DOI 10.1016j.apenergy.2019.113717 Scholar
- 3.Bhullar S.K., Lala N.L., Ramkrishna S. Smart biomaterials – a review. Review on advanced Materials Science. – 2015. – Vol. 40. – P. 303–314. Scholar
- 4.Akhmetshin L.R., Smolin I.Yu. Influence of unit cell parameters of tetrachiral mechanical metamaterial on its effective properties Nanoscience and Technology An International Journal. – 2020. – Vol. 11, no. 3. – P. 265–273. DOI 10.1615NanoSciTechnolIntJ.2020033737 Scholar
- 5.Topological defects produce exotic mechanics in complex metamaterials A.S. Meeussen, E.C. Oğuz, Y. Shokef, M. Hecke Nature Physics. – 2019. – Vol. 16. – P. 307. DOI 10.1038s41567-019-0763-6 Scholar
- 6.Response evolution of mechanical metamaterials under architectural transformations A.S. Meeussen, E.C. Oğuz, M. Hecke, Y. Shokef New Journal of Physics. – 2020. – Vol. 22, no. 023030. DOI 10.10881367-2630ab69b5 Scholar
- 7.Akhmetshin L.R., Smolin I.Yu. Analysis of Stress and Strain in the Tetrachiral Metamaterial with Different Kinds of Unit Cell Connections Procedia Structural Integrity. – 2022. – Vol. 35. – P. 247–253. DOI 10.1016j.prostr.2021.12.071 Scholar
- 8.Three-dimensional mechanical metamaterials with a twist T. Frenzel, M. Kadic, M. Wegener Science. – 2017. – Vol. 358. – No. 6366. – P. 1072. DOI 10.1126science.aao4640 Scholar
- 9.Bryukhanov I.A., Gorodtsov V.A., Lisovenko D.S. Atomistic Modeling of the Mechanical Properties of Chiral Metallic Nanotubes Physical Mesomechanics. – 2020. – Vol. 23, no. 6. – P. 477–486. DOI 10.1134S102995992006003X Scholar
- 10.Mechanical metamaterials and their engineering applications J.U. Surjadi, L. Gao, H. Du, X. Li, X. Xiong, N.X. Fang, Y. Lu Advanced Engineering Materials. – 2019. – Vol. 21, no. 1800864. DOI 10.1002adem.201800864 Scholar
- 11.Cho H., Seo D., Kim D.N. Mechanics of Auxetic Materials. In Hsueh CH. et al. (eds) Handbook of Mechanics of Materials. – Springer, Singapore, 2018. DOI 10.1007978-981-10-6855-3_25-1 Scholar
- 12.Auxetic metamaterials and structures a review X. Ren, R. Das, Ph. Tran, T.D. Ngo, Y.M. Xie Smart Materials and Structures. – 2018. – Vol. 27, no. 023001. DOI 10.10881361-665Xaaa61c Scholar
- 13.Ha C.S., Plesha M.E., Lakes R.S. Chiral three-dimensional lattices with tunable Poisson's ratio Smart Materials and Structures. – 2016. – Vol. 25, no. 5. – P. 054005. DOI 10.10880964-1726255054005 Scholar
- 14.Fu M., Zheng B., Li W. A novel chiral three-dimensional material with negative Poisson's ratio and the equivalent elastic parameters Composite Structures. – 2017. – Vol. 176. – P. 442-448. DOI 10.1016J.COMPSTRUCT.2017.05.027 Scholar
- 15.Fu M., Liu F., Hu L. A novel category of 3D chiral material with negative Poisson's ratio Composites Science and Technology. – 2018. – Vol. 160. – P. 111–118. DOI 10.1016J.COMPSCITECH.2018.03.017 Scholar
- 16.3D cellular metamaterials with planar anti-chiral topology H. Ebrahimi, D. Mousanezhad, H. Nayeb-Hashemi, J. Norato, A. Vaziri Materials and Design. – 2018. – Vol. 145. – P. 226–231. DOI 10.1016J.MATDES.2018.02.052 Scholar
- 17.A novel design method for 3D positive and negative Poisson's ratio material based on tension-twist coupling effects S. Duan, L. Xi, W. Wen, D. Fang Composite Structures. – 2020. – Vol. 236, no. 111899. DOI 10.1016j.compstruct.2020.111899 Scholar
- 18.Sabouni-Zawadzka A.A., Gilewski W. Smart Metamaterial Based on the Simplex Tensegrity Pattern Materials. – 2018. – Vol. 11, no. 5. – P. 673. DOI 10.3390ma11050673 Scholar
- 19.Jiang Y., Li Y. Novel 3D-Printed Hybrid Auxetic Mechanical Metamaterial with Chirality-Induced Sequential Cell Opening Mechanisms Advanced Engineering Materials. – 2017. – No. 1700744. DOI 10.1002adem.201700744 Scholar
- 20.Zhong R., Zheng B., Fu M. A Novel Strategy for Constructing 3D Dislocated Chiral Metamaterial with Negative Poisson's Ratio Advanced Engineering Materials. – 2021. – Vol. 23, no. 3. – P. 2000991. DOI 10.1002adem.202000991 Scholar
- 21.Sang S., Wang Z. A design of elastic metamaterials with multi-negative pass bands Acta Mechanica. – 2018. – Vol. 229. – P. 2647–2655. DOI 10.1007s00707-018-2128-0 Scholar
- 22.Mizzi L., Spaggiari A. Novel chiral honeycombs based on octahedral and dodecahedral Euclidean polygonal tessellations International Journal of Solids and Structures. – 2022. – Vol. 238. – P. 111428. DOI 10.1016j.ijsolstr.2022.111428 Scholar
- 23.A novel metamaterial with tension-torsion coupling effect B.-B. Zheng, R.-Ch. Zhong, X. Chen, M.-H. Fu, L.-L. Hu Materials and Design. – 2019. – Vol. 171. – P. 107700. DOI 10.1016j.matdes.2019.107700 Scholar
- 24.A novel three-dimensional mechanical metamaterial with compression torsion properties R. Zhong, M. Fu, X. Chen, B. Zheng, L. Hu Composite Structures. – 2019. – Vol. 226. – P. 111232. DOI 10.1016j.compstruct.2019.111232 Scholar
- 25.Tailoring the characteristic length scale of 3D chiral mechanical metamaterials P. Ziemke, T. Frenzel, M. Wegener, P. Gumbsch Extreme Mechanics Letters. – 2019. – Vol. 32. – P. 100553. DOI 10.1016j.eml.2019.100553 Scholar
- 26.Analysis of wave band gaps in mechanical metamaterial based on Nelder–Mead method Engineering J. Dong, W. Chen, Z. Zeng, Q.-H. Qin, Y. Xiao Analysis with Boundary Elements. – 2019. – Vol. 103. – P. 109–115. DOI 10.1016j.enganabound.2019.03.011 Scholar
- 27.Chen W., Huang X. Topological design of 3D chiral metamaterials based on couple-stress homogenization Journal of the Mechanics and Physics of Solids. – 2019. – Vol. 131. – P. 372–386. DOI 10.1016j.jmps.2019.07.014 Scholar
- 28.Fu M.-H., Zheng B.-B., Li W.-H. A novel chiral three-dimensional material with negative Poisson’s ratio and the equivalent elastic parameters Composite Structures. – 2017. – Vol. 176. – P. 442–448. DOI 10.1016j.compstruct.2017.05.027 Scholar
- 29.Novel mechanical behaviors of DNA-inspired helical structures with chirality B. Zheng, Y. Liu, J. Liu, S. Yin, J. Xu International Journal of Mechanical Sciences. – 2019. – Vol. 161–162. – P. 105025. DOI 10.1016j.ijmecsci.2019.105025 Scholar
- 30.Li X., Yang Zh., Lu Z. Design 3D metamaterials with compression-induced-twisting characteristics using shear–compression coupling effects Extreme Mechanics Letters. – 2019. – Vol. 29. – P. 100471. DOI 10.1016j.eml.2019.100471 Scholar
- 31.Wang L., Liu H.-T. 3D-compression–torsion cubic mechanical metamaterial with double inclined rods Extreme Mechanics Letters. – 2020. – Vol. 37. – P. 100706. DOI 10.1016j.eml.2020.100706 Scholar
- 32.Wang L., An M.-R., Liu H.-T. Compression spin bio-inspired arm A conceptual model based on compression–torsion cubic mechanical metamaterials with variable cross-section Extreme Mechanics Letters. – 2020. – Vol. 41. – P. 101069. DOI 10.1016j.eml.2020.101069 Scholar
- 33.3D cellular metamaterials with planar anti-chiral topology H. Ebrahimi, D. Mousanezhad, H. Nayeb-Hashemi, J. Norato, A. Vaziri Materials and Design. – 2018. – Vol. 145. – P. 226–231. DOI 10.1016j.matdes.2018.02.052 Scholar
- 34.Тимошенко С.П., Гудьер Дж. Теория упругости пер. с англ. под ред. Г.С. Шапиро. – М. Наука, 1979. – 560 с. Scholar
- 1.Ullah A., Kiuno H., Kubo A., D'Addona D.M. A system for designing and 3D printing of porous structures CIRP Annals. – 2020. – Vol. 69. – No. 1. – PP. 113-116. doi 10.1016j.cirp.2020.04.088 Scholar
- 2.Tan T., Yan Zh., Zou H., Ma K., Liu F., Zhao L., Peng Zh., Zhang W. Renewable energy harvesting and absorbing via multi-scale metamaterial systems for Internet of things Applied Energy. – 2019. – Vol. 254. – No. 113717. doi 10.1016j.apenergy.2019.113717 Scholar
- 3.Bhullar S.K., Lala N.L., Ramkrishna S. Smart biomaterials - a review. Review on advanced Materials Science. – 2015. – Vol. 40. – PP. 303–314. Scholar
- 4.Akhmetshin L.R., Smolin I.Yu. Influence of unit cell parameters of tetrachiral mechanical metamaterial on its effective properties Nanoscience and Technology An International Journal. – 2020. – Vol. 11. – No. 3. – PP. 265-273. doi 10.1615NanoSciTechnolIntJ.2020033737 Scholar
- 5.Meeussen A.S., Oğuz E.C., Shokef Y., Hecke M., Topological defects produce exotic mechanics in complex metamaterials Nature Physics. – 2019. – Vol. 16. – P. 307. doi 10.1038s41567-019-0763-6 Scholar
- 6.Meeussen A.S., Oğuz E.C., Hecke M., Shokef Y. Response evolution of mechanical metamaterials under architectural transformations New Journal of Physics. – 2020. – Vol. 22. – No. 023030. doi 10.10881367-2630ab69b5 Scholar
- 7.Akhmetshin L.R., Smolin I.Yu. Analysis of Stress and Strain in the Tetrachiral Metamaterial with Different Kinds of Unit Cell Connections Procedia Structural Integrity. – 2022. – Vol. 35 – PP. 247-253. doi 10.1016j.prostr.2021.12.071 Scholar
- 8.Frenzel T., KadicM., Wegener M., Three-dimensional mechanical metamaterials with a twist Science. – 2017. – Vol. 358. – No. 6366. – P. 1072. doi 10.1126science.aao4640 Scholar
- 9.Bryukhanov I.A., Gorodtsov V.A., Lisovenko D.S. Atomistic Modeling of the Mechanical Properties of Chiral Metallic Nanotubes Physical Mesomechanics. – 2020. – Vol. 23. – No. 6. – PP. 477–486. doi 10.1134S102995992006003X Scholar
- 10.Surjadi J.U., Gao L., Du H., Li X., Xiong X., Fang N.X., Lu Y. Mechanical metamaterials and their engineering applications Advanced Engineering Materials. – 2019. – Vol. 21. – No. 1800864. doi 10.1002adem.201800864 Scholar
- 11.Cho H., Seo D., Kim D.N. Mechanics of Auxetic Materials. In Hsueh CH. et al. (eds) Handbook of Mechanics of Materials. Springer, Singapore. – 2018. doi 10.1007978-981-10-6855-3_25-1 Scholar
- 12.Ren X., Das R., Tran Ph., Ngo T.D., Xie Y.M. Auxetic metamaterials and structures a review Smart Materials and Structures. – 2018. – Vol. 27. – No. 023001. doi 10.10881361-665Xaaa61c Scholar
- 13.Ha C.S., Plesha M.E., Lakes R.S. Chiral three-dimensional lattices with tunable Poisson's ratio Smart Materials and Structures. – 2016. – Vol. 25. – No. 5. – P. 054005. doi 10.10880964-1726255054005 Scholar
- 14.Fu M., Zheng B., Li W. A novel chiral three-dimensional material with negative Poisson's ratio and the equivalent elastic parameters Composite Structures. – 2017. – Vol. 176. – PP. 442-448. doi 10.1016J.COMPSTRUCT.2017.05.027 Scholar
- 15.Fu M., Liu F., Hu L. A novel category of 3D chiral material with negative Poisson's ratio Composites Science and Technology. – 2018. – Vol. 160. – PP. 111-118. doi 10.1016J.COMPSCITECH.2018.03.017 Scholar
- 16.Ebrahimi H., Mousanezhad D., Nayeb-Hashemi H., Norato J., Vaziri A. 3D cellular metamaterials with planar anti-chiral topology Materials and Design. – 2018. – Vol. 145. – PP. 226-231. doi 10.1016J.MATDES.2018.02.052 Scholar
- 17.Duan S., Xi L., Wen W., Fang D. A novel design method for 3D positive and negative Poisson's ratio material based on tension-twist coupling effects Composite Structures. – 2020. – Vol. 236. – No. 111899. doi 10.1016j.compstruct.2020.111899 Scholar
- 18.Sabouni-Zawadzka A.A., Gilewski W. Smart Metamaterial Based on the Simplex Tensegrity Pattern Materials. – 2018. – Vol. 11. – No. 5. – P. 673. doi 10.3390ma11050673 Scholar
- 19.Jiang Y., Li Y. Novel 3D-Printed Hybrid Auxetic Mechanical Metamaterial with Chirality-Induced Sequential Cell Opening Mechanisms Advanced Engineering Materials. – 2017. – No. 1700744. doi 10.1002adem.201700744 Scholar
- 20.Zhong R., Zheng B., Fu M. A Novel Strategy for Constructing 3D Dislocated Chiral Metamaterial with Negative Poisson's Ratio Advanced Engineering Materials. – 2021. – Vol. 23. – No. 3. – P. 2000991. doi 10.1002adem.202000991 Scholar
- 21.Sang S., Wang Z. A design of elastic metamaterials with multi-negative pass bands Acta Mechanica. – 2018. – Vol. 229. – PP. 2647–2655. doi 10.1007s00707-018-2128-0 Scholar
- 22.Mizzi L., Spaggiari A. Novel chiral honeycombs based on octahedral and dodecahedral Euclidean polygonal tessellations International Journal of Solids and Structures. – 2022. – 238. P. 111428. doi 10.1016j.ijsolstr.2022.111428 Scholar
- 23.Zheng B.-B., Zhong R.-Ch., Chen X., Fu M.-H., Hu L.-L. A novel metamaterial with tension-torsion coupling effect Materials and Design. – 2019. – Vol. 171. – P. 107700. doi 10.1016j.matdes.2019.107700 Scholar
- 24.Zhong R., Fu M., Chen X., Zheng B., Hu L. A novel three-dimensional mechanical metamaterial with compression torsion properties Composite Structures. – 2019. – Vol. 226. – P. 111232. doi 10.1016j.compstruct.2019.111232. Scholar
- 25.Ziemke P., Frenzel T., Wegener M., Gumbsch P. Tailoring the characteristic length scale of 3D chiral mechanical metamaterials. Extreme Mechanics Letters. – 2019. – Vol. 32. – P. 100553. doi 10.1016j.eml.2019.100553 Scholar
- 26.Dong J., Chen W., Zeng Z., Qin Q.-H., Xiao Y. Analysis of wave band gaps in mechanical metamaterial based on Nelder–Mead method Engineering Analysis with Boundary Elements. – 2019. – Vol. 103. – PP. 109-115. doi 10.1016j.enganabound.2019.03.011 Scholar
- 27.Chen W., Huang X. Topological design of 3D chiral metamaterials based on couple-stress homogenization Journal of the Mechanics and Physics of Solids. – 2019. – Vol. 131. – PP. 372–386. doi 10.1016j.jmps.2019.07.014 Scholar
- 28.Fu M.-H., Zheng B.-B., Li W.-H. A novel chiral three-dimensional material with negative Poisson’s ratio and the equivalent elastic parameters Composite Structures. – 2017. – Vol. 176. – PP. 442–448. doi 10.1016j.compstruct.2017.05.027 Scholar
- 29.Zheng B., Liu Y., Liu J., Yin S., Xu J. Novel mechanical behaviors of DNA-inspired helical structures with chirality International Journal of Mechanical Sciences. – 2019. – Vol. 161–162. – P. 105025. doi 10.1016j.ijmecsci.2019.105025 Scholar
- 30.Li X., Yang Zh., Lu Z. Design 3D metamaterials with compression-induced-twisting characteristics using shear–compression coupling effects Extreme Mechanics Letters. – 2019. – Vol. 29. – P. 100471. doi 10.1016j.eml.2019.100471 Scholar
- 31.Wang L., Liu H.-T. 3D compression–torsion cubic mechanical metamaterial with double inclined rods Extreme Mechanics Letters. – 2020. – Vol. 37. – P. 100706. doi 10.1016j.eml.2020.100706 Scholar
- 32.Wang L., An M.-R., Liu H.-T. Compression spin bio-inspired arm A conceptual model based on compression–torsion cubic mechanical metamaterials with variable cross-section Extreme Mechanics Letters. – 2020. – Vol. 41. – P. 101069. doi 10.1016j.eml.2020.101069 Scholar
- 33.Ebrahimi H., Mousanezhad D., Nayeb-Hashemi H., Norato J., Vaziri A. 3D cellular metamaterials with planar anti-chiral topology Materials and Design. – 2018. – Vol. 145. – PP. 226–231. doi 10.1016j.matdes.2018.02.052 Scholar
- 34.Timoshenko S., Goodier N. Theory of Elasticity. Engineering Society Monograph. McGraw-Hill Book Company, Inc. 1951. Scholar
Другие статьи выпуска
Весь выпуск (№ 1, 2023)- METHODS FOR REDUCING NOTCH SENSITIVITY OF HYBRID PSEUDO-DUCTILE POLYMER COMPOSITES WITH FABRIC REINFORCEMENT: EXPERIMENTAL STUDYс. 5–11
- МОДЕЛИРОВАНИЕ УПРУГОПЛАСТИЧЕСКОГО РАЗРУШЕНИЯ ПЛАСТИНЫ С ЦЕНТРАЛЬНОЙ ТРЕЩИНОЙс. 12–25
- ХАРАКТЕРИСТИКИ ПРОЧНОСТИ И ПЛАСТИЧНОСТИ РЯДА МЕТАЛЛИЧЕСКИХ СПЛАВОВ И НЕРЖАВЕЮЩИХ СТАЛЕЙ, СОЗДАННЫХ ПРОВОЛОЧНО-ДУГОВОЙ НАПЛАВКОЙ, В ШИРОКОМ ДИАПАЗОНЕ СКОРОСТЕЙ ДЕФОРМАЦИЙс. 33–45
- ПЛОСКИЕ ЗАДАЧИ О ДЕЙСТВИИ ОСЦИЛЛИРУЮЩЕЙ НАГРУЗКИ НА ГРАНИЦЕ УПРУГОЙ ИЗОТРОПНОЙ ПОЛОСЫ ПРИ НАЛИЧИИ ПОВЕРХНОСТНЫХ НАПРЯЖЕНИЙс. 46–55
- Совершенствование неразрушающего метода определения механических характеристик элементов многослойных конструкций на примере дорожных одеждс. 56–65
- ФЕНОМЕНОЛОГИЧЕСКОЕ КИНЕТИЧЕСКОЕ УРАВНЕНИЕ КОНВЕРСИИ СВЯЗУЮЩЕГО КОМПОЗИЦИОННЫХ МАТЕРИАЛОВ НА ОСНОВЕ ИЗОТЕРМИЧЕСКИХ ИСПЫТАНИЙс. 66–74
- О реконструкции полей предварительных напряжений в полом цилиндрес. 75–89
- МЕТОД СПЕКТРАЛЬНОЙ ДИНАМИЧЕСКОЙ ЖЕСТКОСТИ В ЗАДАЧАХ ФЛАТТЕРА СОСТАВНЫХ ПЛАСТИНс. 90–102
- ПРЕДСТАВИТЕЛЬНЫЙ ОБЪЕМ И ЭФФЕКТИВНЫЕ МАТЕРИАЛЬНЫЕ ХАРАКТЕРИСТИКИ ПЕРИОДИЧЕСКИХ И СТАТИСТИЧЕСКИ ОДНОРОДНО АРМИРОВАННЫХ ВОЛОКОННЫХ КОМПОЗИТОВс. 103–110
- Идентификация дефектов в клине с покрытием на основе методов ультразвукового неразрушающего контроля и сверточных нейронных сетейс. 111–124
- Осаждение фуллеритов C60 на подложку твердого тела с образованием пленкис. 125–133
- ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ ГАЗОДИНАМИЧЕСКИХ И ПРОЧНОСТНЫХ ХАРАКТЕРИСТИК ВЕНТИЛЯТОРА ДЛЯ ЭКСПЕРИМЕНТАЛЬНОЙ УСТАНОВКИ ПО ИССЛЕДОВАНИЮ РАЗРУШЕНИЯ ЛЬДА НА ВРАЩАЮЩИХСЯ РАБОЧИХ ЛОПАТКАХс. 134–141
Показаны 12 из 15