Zastosowanie wektorów Ritza w diagnostyce konstrukcji

• Autorzy: Uhl T. , Mendrok K.

Warianty tytułu

EN

Beam crack detection with use of ritz vectors

• Języki publikacji: PL

Abstrakty

PL

Wektory Ritza są wielkością podobną do wektorów modalnych. Ich zaletą względem wektorów modalnych jest fakt, że do oddania charakteru odpowiedzi układu potrzebna jest mniejsza ich liczba niż wektorów modalnych. Symulacyjne analizy numeryczne wykazały ponadto, że Wektory Ritza, zwane też wektorami Lanczosa, lepiej nadają się do wykrywania uszkodzenia niż wektory modalne. W pracy przedstawiono krótki przegląd metod wykrywania uszkodzeń bazujących na modelu modalnym. Przytoczono definicję wektorów Ritza oraz pokazano kilka sposobów ich wyznaczania. Porównano ich skuteczność w wykrywaniu uszkodzenia zasymulowanego na stanowisku laboratoryjnym w odniesieniu do wektorów modalnych.

EN

Ritz vectors have similar character as modal vectors. Their advantage with respect to modal vectors is a fact, that less number of them is required to estimate object response. Numerical analysis proofed also, that Ritz vectors, called sometimes Lanchos vectors, have better ability to detect damage then modal vectors. In the paper short overview of modal model based damage detection methods is presented. Definition of Ritz vectors and some methods of their estimation are shown. The paper also consists a comparison of effectiveness in detection of damage, simulated on laboratory stand, both the Ritz and the modal vectors.

Słowa kluczowe

PL

wektory Ritza; wektory modalne; model modalny; analiza modalna; wykrywanie uszkodzeń

EN

Ritz vectors; modal vectors; modal model; modal analysis; damage detection

• Wydawca: Polskie Towarzystwo Diagnostyki Technicznej
• Czasopismo: Diagnostyka
• Rocznik: 2004
• Tom: Vol. 32
• Strony: 23--30
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

Uhl T.

• Katedra Robotyki i Dynamiki Maszyn, Akademia Górniczo Hutnicza Al. Mickiewicza 30, 30-059 Kraków, fax: [phone]

autor

Mendrok K.

• Katedra Robotyki i Dynamiki Maszyn, Akademia Górniczo Hutnicza Al. Mickiewicza 30, 30-059 Kraków, fax: [phone]

Bibliografia

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