Energy dissipation under multiaxial thermomechanical fatigue loading
作者： Aleš Gosar , Marko Nagode
DOI: 10.1016/J.IJFATIGUE.2012.10.021
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摘要: Abstract The paper presents an approach to the energy dissipation calculation under arbitrary multiaxial thermomechanical fatigue (TMF) loading. In such total area of plastic hysteresis loops is taken as a measure dissipated energy. based on concept developed temperature dependent Prandtl type operator. Energy associated irreversible dislocation movements represented by slider shifts three independent operators. then obtained continuously at any time collecting increments each It shown that operator gives us same deformation compared classical integration approach. Furthermore, presented enables automatically split between “true” and elastically “stored” order satisfy request for minimum number dedicated material tests, assumes fixed principal directions. Therefore, proportional well non-proportional loading conditions are addressed in manner, which currently main deficiency
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