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A mixed variational‐based dynamic simulation method for fiber‐reinforced continua in non‐isothermal rotordynamical systems
Author(s) -
Groß Michael,
Dietzsch Julian,
Röbiger Chris
Publication year - 2019
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201900009
Subject(s) - finite element method , isothermal process , brake , rotor (electric) , fiber , disc brake , mechanics , dynamic simulation , materials science , structural engineering , mechanical engineering , computer science , engineering , composite material , physics , simulation , thermodynamics
Three‐dimensional woven carbon‐fiber reinforced polymers (3D‐CFRP) are being increasingly used for blades in rotordynamical systems as turbine fans, shafts as well as disc brake rotors. By using dynamic mixed finite‐element methods, these materials can be simulated as anisotropic continua with non‐isothermal behaviour in the matrix as well as the fiber material. Therefore, we present a novel dynamic mixed finite‐element method which is variational‐based and capable to simulate these materials. This dynamic mixed finite‐element method preserves each basic balance law emanating from the variational principle exact in a discrete setting. We demonstrate this physically‐consistent simulation behaviour by using dynamic simulations of a disc brake rotor and a rotating pipe subject to thermal and mechanical loads.