On the issue of designing a beam element of polymer composite materials, considering shock effects
The use of articles of polymer composite materials is a widespread way to reduce the weight of the structure and increase its corrosion resistance. One of the main disadvantages of such articles is low resistance to shock loads. The advantages and disadvantages of known methods of increasing the resistance to dynamic loading of parts and assemblies of polymer composite materials are considered. The design of a multilayer adaptive beam element containing an inner layer of elasticviscoplastic dilatant liquid — polysilicon as a layer of variable stiffness increasing the resistance to impact is proposed. Based on laboratory testing followed by statistical processing the results, the mechanical characteristics of polysilicon under shock loading (density, Poisson’s ratio, Young’s modulus, shear modulus) were determined, and dependence of normal stress on relative longitudinal strain is plotted. A method for calculating the strength of an adaptive beam element with an inner layer of polysilicon under impact is proposed.
 Nesrin S.K., Yekta K., Huseyin O., Gokce O. Chapter 4. Textile Reinforced Structural Composites for Advanced Applications. In: Textiles for Advanced Applications. http://dx.doi.org/10.5772/intechopen.68245
 Pengfei L., Qilin Z., Jinchun L., Haosen C. Scientific World Journal, 2014, vol. Aug. 2014, 13 p. http://dx.doi.org/10.1155/2014/309872
 Valasek P., Kejval J., Muller M. Research in Agricultural Engineering, 2014, vol. 60, no. 4, pp. 165–171. https://doi.org/10.17221/23/2013-RAE
 Sorokina I.I., Astakhov M.V. Technologiya Metallov — Metal Technology, 2012, no. 12, pp. 18–20.
 Yongjing W., Duc Truong P., Chunqian J. Cogent Engineering, 2015, no. 2. http://dx.doi.org/10.1080/23311916.2015.1075686
 Wadhawan V.K. Smart structures: blurring the distinction between the living and the nonliving. Oxford, Oxford University Press Publ., 2007, 368 p.
 Chopra I., Sirohi J. Smart Structures Theory. United Kingdom, Cambridge University Press Publ., 2013, 920 p.
 Astakhov M.V., Gracheva E.V. Inzhenernyy zhurnal: nauka i innovatsii — Engineering Journal: Science and Innovation, 2018, iss. 2. http://dx.doi.org/10.18698/2308-6033-2018-2-1727
 The revolutionary liquid armor suit that is made from bullet-proof custard. Available at: https://www.dailymail.co.uk/sciencetech/article-1294074/The-evolutionary-liquid-armour-suit-bullet-proof-custard.html (accessed January 20, 2020).
 Liquid Armor: Nano Particle Technology. Available at: https://scienceaid.net/Liquid_Armor:_Nano_Particle_Technology (accessed January 21, 2020).
 Ferreira M., Möbius M., Boland C.J.N., Khan Um, Ryan G., Barwich S., Charifou R., Harvey A.N., Backes C., Li Z. Science, 2016, vol. 354, no. 6317, pp. 1257–1260. http://dx.doi.org/10.1126/science.aag2879
 Cross R. American Journal of Physics, 2012, vol. 80, no. 10, pp. 870–875. https://doi.org/10.1119/1.4732086
 Volmir A.S. Raschet plastinok. Spravochnik mashinostroitelya [Calculating of plates. Machine engineer’s handbook]. Vol. 3. Moscow, Mashgiz Publ., 1955, 380 p.
 Pasternak P.L. Osnovy novogo metoda rascheta fundamentov na uprugom osnovanii pri pomoshchi dvukh koeffitsientov posteli [The principals of a new method for calculating foundations on an elastic base using two bed coefficients]. Moscow, Gosstroyizdat Publ., 1954, 56 p.