Dynamic properties of the Shear Thickening Fluid (STF) are studied. Two series of tests by the Split Hopkinson Pressure Bar method were carried out to determine the dynamic bulk and shear properties of STF. The hypothesis about the possibility to describe STF behavior by a Newtonian fluid model in the characteristic range of strain rates is confirmed. A simplified mathematical model of the STF is then formulated for the use in computer simulation of ballistic impact tests of multilayered composite protective shells. The effectiveness of the STF impregnation for improvement of ballistic impact characteristics of Kevlar woven fabrics is confirmed. It is concluded that the role of the contact conditions between STF and Kevlar basis in the process of increasing the energy absorption capacity of Kevlar-STF barrier is significant, noting that the mechanism of contact interaction between STF and Kevlar basis can be described by viscous friction law, i.e., the STF behaves almost as a rigid body during the interactions with the solids, while it normally behaves as a fluid. It is also established that the STF impregnation of protective shells with titanium framework not only increases the absorption capacity of the whole package but also reduces the deflection of the metal base.

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Ïðîâåäåíî ýêñïåðèìåíòàëüíî-âû÷èñëèòåëüíîå èññëåäîâàíèå ïî îöåíêå äèññèïàòèâíûõ ôàêòîðîâ â ïðîöåññàõ ïðîáèâàíèÿ ïðåãðàä èç òêàíûõ êîìïîçèòîâ íà îñíîâå àðàìèäíûõ âîëîêîí. Ðàññìîòðåíû ðàçíîîáðàçíûå òèïû 2D-ïëåòåíèÿ ñëîåâ (13 òèïîâ), à òàêaeå íåêîòîðûå õàðàêòåðíûå âèäû ïîïåðå÷íîé ïðîøèâêè, ÿâëÿþùèåñÿ âàðèàíòàìè 3D-ïëåòåíèÿ. Óñòàíîâëåíî, ÷òî âåäóùèì äèññèïàòèâíûì ôàêòîðîì ïðè ïðîáèâàíèè òêàíûõ ïðåãðàä îòíîñèòåëüíî ìàëîé òîëùèíû (äî 10 ñëîåâ) ÿâëÿåòñÿ ðàáîòà íà ïåðåìåùåíèÿõ âîëîêîí, à íå òðàäèöèîííî ïðèíèìàåìûå ïîòåðè íà òðåíèå è ðàçðóøåíèå.  ïîäòâåðaeäåíèå ýòîãî ðåçóëüòàòà ïîêàçàíî, ÷òî ïîïåðå÷íàÿ ïðîøèâêà ìíîãîñëîéíîãî òêàíîãî êîìïîçèòà, èñïîëüçóþùàÿñÿ äëÿ óâåëè÷åíèÿ åãî èçãèáíîé aeåñòêîñòè, íî ïðè ýòîì îãðàíè÷èâàþùàÿ ïåðåìåùåíèÿ âîëîêîí, íå ñïîñîáñòâóþò óëó÷øåíèþ çàùèòíûõ ñâîéñòâ ïðåãðàäû.

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Ïðåäëîaeåíà è ìàòåìàòè÷åñêè îáîñíîâàíà íîâàÿ ìîäèôèêàöèÿ ìåòîäà Êîëüñêîãî, îñíîâàííàÿ íà êëàññè÷åñêîé ñõåìå èñïûòàíèÿ íà ñaeàòèå, ïîçâîëÿþùàÿ èññëåäîâàòü äèíàìè÷åñêèå ïðîöåññû ïðîñòîãî è ÷èñòîãî ñäâèãà âïëîòü äî ðàçðóøåíèÿ äëÿ øèðîêîãî êëàññà ìàòåðèàëîâ, âêëþ÷àÿ âûñîêîïðî÷íûå ìåòàëëû è ñïëàâû. Ïîêàçàíî, ÷òî ðàññìîòðåííàÿ èñïûòàòåëüíàÿ ñõåìà ïîçâîëÿåò ðåàëèçîâàòü â ðàáî÷åé ÷àñòè îáðàçöà èç èñïûòóåìîãî ìàòåðèàëà áëèçêîå ê îäíîðîäíîìó ñäâèãîâîå íàïðÿaeåííî-äåôîðìèðîâàííîå ñîñòîÿíèå è ìîaeåò áûòü ýôôåêòèâíî ïðèìåíåíà äëÿ èññëåäîâàíèé îïðåäåëÿþùèõ ñîîòíîøåíèé è êðèòåðèåâ ðàçðóøåíèÿ ìàòåðèàëîâ. Ïîëó÷åíû îáùèå ñîîòíîøåíèÿ, ñâÿçûâàþùèå ìåaeäó ñîáîé ñäâèãîâûå íàïðÿaeåíèÿ è äåôîðìàöèè è ïåðåõîäÿùèå ïðè ðàâåíñòâå ïðîäîëüíûõ ñèë, äåéñòâóþùèõ íà îáðàçåö, â ôîðìó, àíàëîãè÷íóþ ñîîòíîøåíèÿì êëàññè÷åñêîãî ìåòîäà Êîëüñêîãî. Êëþ÷åâûå ñëîâà: ðàçðåçíîé ñòåðaeåíü Ãîïêèíñîíà, ìåòîä Êîëüñêîãî, äè-íàìè÷åñêèå ñâîéñòâà ìàòåðèàëîâ, ðàçðóøåíèå, ïðîñòîé ñäâèã, ÷èñòûé ñäâèã. * Âûïîëíåíî ïðè ÷àñòè÷íîì ôèíàíñèðîâàíèè ÐÔÔÈ (ãðàíò ¹17-08-00334).