The conception of the fatigue model for layered composites considering thermal effects

• Autorzy: Katunin A.

Warianty tytułu

PL

Koncepcja modelu zmęczeniowego dla kompozytów warstwowych z uwzględnieniem efektów cieplnych

• Języki publikacji: EN

Abstrakty

EN

Polymer-based layered composites are widely used in many responsible applications, such as turbine blades, helicopter propellers etc. Therefore its behaviour must be predictable in different conditions and operational states. Dynamic excitation of polymer composites obliges to consider it as a viscoelastic material, which introduce additional phenomena, e.g. self-heating effect. This effect occurred into two states: steady and non-steady. The strain of the structure subjected to the self-heating could be evaluated basing of DMA measurements and using Arrhenius kinetic concept together with time-temperature superposition principle. For obtaining the fatigue model the pseudo-strain approach was used. The fatigue model was based on damage function with taking into consideration self-heating effect.

PL

Polimerowe kompozyty warstwowe są szeroko stosowane w wielu odpowiedzialnych aplikacjach takich, jak łopatki turbin, śmigła helikopterów itd. Z tego względu ich zachowanie powinno być przewidywalne w różnych warunkach i stanach operacyjnych. Dynamiczne wzbudzanie kompozytów polimerowych obliguje do rozpatrywania ich jako materiału lepkosprężystego, co powoduje dodatkowe zjawiska, np. efekt samorozgrzania. Efekt występuje w stanie ustalonym i nieustalonym. Odkształcenia struktury pod działaniem efektu samorozgrzania mogą być określone w oparciu o pomiary DMA oraz z zastosowanie kinetycznej zasady Arrheniusa i zasady superpozycji czasowo-temperaturowej. W celu otrzymania modelu zmęczeniowego posłużono się metodą pseudo-odkształceń dla opisu lepkosprężystości. Model zmęczeniowy bazuje na funkcji zniszczenia z uwzględnieniem efektu samorozgrzania.

Słowa kluczowe

EN

laminate fatigue; pseudo-strain; self-heating

PL

model zmęczeniowy; kompozyty warstwowe; kompozyty polimerowe; efekt samorozgrzania

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2011
• Tom: Vol. 11, no 2
• Strony: 333--343
• Opis fizyczny: Bibliogr. 25 poz., wykr.

Twórcy

autor

Katunin A.

• Silesian University of Technology, Department of Fundamentals of Machine Design, ul. Konarskiego 18A, 44-100 Gliwice, Poland

Bibliografia

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