Êàðà÷óí Â.Â., Ìåëüíèê Â.Í.

Íàöèîíàëüíûé òåõíè÷åñêèé óíèâåðñèòåò Óêðàèíû «ÊÏÈ»

îÁÎËÎ×ÊÀ ÏÐÎÈÇÂÎËÜÍÎÃÎ Î×ÅÐÒÀÍÈß Ñ ÍÎÑÈÒÅËÅÌ ÊÈÍÅÒÈ×ÅÑÊÎÃÎ ÌÎÌÅÍÒÀ

 

Ðàäèàëüíûå ïåðåìåùåíèÿ. Ðàññìîòðèì óðàâíåíèå óïðóãèõ ïåðåìåùåíèé ïîâåðõíîñòè â ïëîñêîñòè øïàíãîóòà.  êà÷åñòâå âíåøíåãî âîçäåéñòâèÿ ïðèìåì ïðîíèêàþùåå àêóñòè÷åñêîå èçëó÷åíèå âûñîêîãî óðîâíÿ. Òîãäà ìåõàíèçì âçàèìîäåéñòâèÿ ïîâåðõíîñòè ñ âîëíîé èçáûòî÷íîãî äàâëåíèÿ ïðèìåò âèä:

                                 

                                                                        

                                                                   

                                                     

                                                                        

                                                                        

                                                                        

                                               

                                                                        

                                                                   

                                                                      

                                                   

                                                   

                                                                      

                                                                       

                                                

                                                                          

1                                                                           

Ïðîñóììèðóåì ýòè âåëè÷èíû:

Óìíîæèì îáå ÷àñòè ýòîãî âûðàæåíèÿ íà  è ïðîèíòåãðèðóåì â ïðåäåëàõ  , . Ïîëó÷èì:

              (1)

ãäå                                   

                           (2)

Àíàëîãè÷íûå ïðîöåäóðû îñóùåñòâëÿåì íàä âòîðûì óðàâíåíèåì:

               (3)

ãäå                               

Óðàâíåíèÿ (1), (3) ïîçâîëÿþò âû÷èñëèòü partialis ÷àñòîòû è îöåíèòü ñòåïåíü âëèÿíèÿ ïðîäîëüíûõ è îêðóæíûõ ïåðåìåùåíèé.