Strain Field And Strain History Of Nonproportional Loading
Author(s)
H. Jahed and M. Reza Noban
Abstract
Strain field and strain history of
nonproportional loading
H. Jahed and M. Reza Noban
Department of Mechanical Engineering,
Iran University of Science and Technology, Tehran, Iran
Abstract
Nonproportional multiaxial loading of components is of great interest in fatigue
and damage studies. To present a complete strain field and strain history of such
loading, an incremental theory of plasticity should be employed. However, due
to its incremental nature, the computational time is not favourable. On the other
hand the total deformation plasticity is less time consuming but is path
independent and hence is not capable of predicting strain history. Also the strain
predictions are not correct. In this paper an appropriate path dependent semi total
deformation method is presented for nonproportional loading. In the formulation
presented both linear and nonlinear stressing is considered. Different examples
are considered and results obtained from present method are compared to
incremental plasticity u
Keywords
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