Ïðèâîäÿòñÿ ïîñòàíîâêà çàäà÷è è ðåçóëüòàòû ÷èñëåííûõ èññëåäîâàíèé ïðîñòðàíñòâåííîãî ïðîöåññà äèíàìè÷åñêîãî âçàèìîäåéñòâèÿ óäàðíèêà ñ òðóáîïðîâîäîì, ñîäåðaeàùèì aeèäêîñòü. Àíàëèçèðóþòñÿ ïðîöåññû òðàíñôîðìàöèè äâèaeåíèÿ óäàðíèêà, îáîëî÷êè òðóáîïðîâîäà è aeèäêîñòè â ïðîäîëüíóþ âîëíó ãèäðîóäàðà. Ïîêàçûâàþòñÿ îñîáåííîñòè âîëíîâûõ ïðîöåññîâ, ïðîèñõîäÿùèõ â òðóáîïðîâîäå, àíàëèçèðóþòñÿ íåîáðàòèìûå äåôîðìàöèè â ñòåíêå òðóáû, àìïëèòóäà è äëèòåëüíîñòü ïðîäîëüíîé âîëíû â aeèäêîñòè è â îáîëî÷êå òðóáû, âëèÿíèå êðàåâûõ óñëîâèé. Îöåíèâàåòñÿ ÷àñòü èìïóëüñà, ïðåîáðàçóþùàÿñÿ â ïðîäîëüíóþ âîëíó ãèäðîóäàðà.Êëþ÷åâûå ñëîâà: òðóáîïðîâîä, aeèäêîñòü, ãèäðîóïðóãîñòü, ïëàñòè÷íîñòü, äåôîðìàöèÿ, óäàð.
ÂâåäåíèåÀêòóàëüíîñòü çàäà÷è îáóñëîâëåíà ïðèìåíåíèåì òðóáîïðîâîäîâ â ðàçëè÷íûõ ñôåðàõ äåÿòåëüíîñòè ÷åëîâåêà. Èññëåäîâàíèå ïðîöåññîâ äåôîðìàöèè òðóáîïðîâîäîâ ïðè óäàðíîì íàãðóaeåíèè îñîáåííî âàaeíî äëÿ òàêèõ îòðàñëåé ïðîèçâîäñòâà, êàê íåôòåãàçîâàÿ ïðîìûøëåííîñòü, àòîìíàÿ ýíåðãåòèêà è äð. Äëÿ îöåíêè ïîñëåäñòâèé âîçìîaeíûõ àâàðèéíûõ ñèòóàöèé íåîáõîäèìî èññëåäîâàòü ïðî÷íîñòü òðóá ïîä âîçäåéñòâèåì èìïóëüñíûõ íàãðóçîê. Áîëüøàÿ ÷àñòü èññëåäîâàíèé äèíàìèêè òðóáîïðîâîäîâ ñ çàïîëíÿþùåé aeèäêîñòüþ ïîñâÿùåíà òîðöåâîìó èìïóëüñíîìó íàãðóaeåíèþ è èçó÷åíèþ âîçíèêàþùåãî â íèõ ãèäðîóäàðà [1−3]. Ïðè èíòåíñèâíîì íàãðóaeåíèè íàáëþäàþòñÿ íåëèíåéíûå ýôôåêòû óïðóãîïëàñòè÷åñêîãî äåôîðìèðîâàíèÿ â òðóáîïðîâîäå è êàâèòàöèè â aeèäêîñòè. Íà òåìó óäàðíîãî íàãðóaeåíèÿ òðóáîïðîâîäîâ ìîaeíî íàéòè ðàáîòû, ðàíåå âûïîëíåííûå àâòîðàìè íàñòîÿùåé ñòàòüè [4−6].  ýòèõ ðàáîòàõ îïèñàíû èññëåäîâàíèÿ áîêîâîãî óäàðà ïî òðóáîïðîâîäó, çàïîëíåííîìó aeèä-ÏÐÎÁËÅÌÛ ÏÐÎ×ÍÎÑÒÈ È ÏËÀÑÒÈ×ÍÎÑÒÈ, ò. 77, ¹ 3, 2015 ã. * Âûïîëíåíî ïðè ÷àñòè÷íîì ôèíàíñèðîâàíèè ÐÔÔÈ (ãðàíòû ¹15-48-02333-ð_ïîâîë-aeüå_à, ¹13-08-00219, ¹14-08-00197, ¹14-08-31149-ìîë_à), Ïðîãðàììîé ãîñóäàðñòâåííîé ïîääåðaeêè âåäóùèõ íàó÷íûõ øêîë ÐÔ (ãðàíò ÍØ-593.2014.8) è ÐÍÔ (ãðàíò ¹14-19-01096) â ÷àñòè ïîñòàíîâêè òðåõìåðíîé çàäà÷è ãèäðîóïðóãîñòè.The formulation of the poblem and the results of numeically investigating the spatial process of a dynamic interaction between a striker and a pipeline carrying a liquid are presented. The processes of transformation of the motion of the strriker, the pipeline shell and the liquid into a longotudinal hydro shock wave are analyzed. The specific features of the wave processes in the pipeline are shown; deformations in the pipe wall, the amplitude and the length of the longitudinal wave in the liquid and in the pipe shell are analyzed, as well as the effect of the boundary conditions. The part of the pulse transforming into a longitudinal hydro shock wave is evaluated.
