"1"^^ . . . . "2007-11-21+01:00"^^ . "5"^^ . "Sound Propagation Problem Solved By Boundary Elements Method" . "Sound Propagation Problem Solved By Boundary Elements Method" . . "Szweda, Jan" . . "1"^^ . . "451298" . "Sound Propagation Problem Solved By Boundary Elements Method"@en . "[172D8CCBF82A]" . . "\u0160\u00ED\u0159en\u00ED zvuku \u0159e\u0161eno metodou hrani\u010Dn\u00EDch prvk\u016F"@cs . "Sound Propagation Problem Solved By Boundary Elements Method"@en . . . "Tento \u010Dl\u00E1nek je zam\u011B\u0159en na popis jednoho ze zp\u016Fsob\u016F numerick\u00E9ho \u0159e\u0161en\u00ED \u0161\u00ED\u0159en\u00ED zvuku, kter\u00E9 je vyvol\u00E1v\u00E1no vibracemi povrchu strojn\u00EDch celk\u016F. Z\u00E1kladem pro numerick\u00E9 akustick\u00E9 anal\u00FDzy je metoda hrani\u010Dn\u00EDch prvk\u016F. C\u00EDlem pr\u00E1ce je posouzen\u00ED m\u00EDry nep\u0159esnosti v\u00FDsledk\u016F z\u00EDskan\u00FDch u\u017Eit\u00EDm postupu, kter\u00FD je zalo\u017Een na jednoduch\u00E9m typu hrani\u010Dn\u00EDch prvk\u016F. Pro napln\u011Bn\u00ED c\u00EDle je provedeno \u0159e\u0161en\u00ED akustick\u00E9 \u00FAlohy dv\u011Bma zp\u016Fsoby, ka\u017Ed\u00FDm pro jin\u00FD typy hrani\u010Dn\u00EDch element\u016F. Pr\u016Fm\u011Brn\u00E1 relativn\u00ED chyba v hodnot\u00E1ch hladiny akustick\u00E9ho v\u00FDkonu se pohybuje na 5% hranici, ojedin\u011Bl\u00E1 maxim\u00E1ln\u00ED hodnota t\u00E9to chyby \u010Din\u00ED 16 %."@cs . "\u0160\u00ED\u0159en\u00ED zvuku \u0159e\u0161eno metodou hrani\u010Dn\u00EDch prvk\u016F"@cs . "3-937523-04-9" . . "RIV/61989100:27230/07:00014789!RIV09-MSM-27230___" . . "vibration; FEM; Helmhotz equation; BEM; acoustic analysis"@en . "27230" . . . . . "CADFEN GmbH, ANSYS Germany GmbH" . . "Conference Proceedings of ANSYS Conference & 25. ANSYS CADFEM Users? Meeting" . . "Grafing b. Munchen, Germany" . "The presentation deals the numerical method to solution of sound propagation radiated by vibration of surfaces of machine complex. As the base of applied numerical solution is used the boundary elements method. The purpose of the work is to determine the rate of inaccuracy of numerical results obtained using the simple approach of BEM and also the estimation of its usability to finding the acoustical properties of machine parts. To fulfil the purpose the solution of acoustic problem was done using two approach of BEM. The average relative error of acoustic pressure level has value about 5%, unique maximum value is 16 %."@en . . "Dresden, Germany" . "S, Z(MSM6198910027)" . "The presentation deals the numerical method to solution of sound propagation radiated by vibration of surfaces of machine complex. As the base of applied numerical solution is used the boundary elements method. The purpose of the work is to determine the rate of inaccuracy of numerical results obtained using the simple approach of BEM and also the estimation of its usability to finding the acoustical properties of machine parts. To fulfil the purpose the solution of acoustic problem was done using two approach of BEM. The average relative error of acoustic pressure level has value about 5%, unique maximum value is 16 %." . . "RIV/61989100:27230/07:00014789" .