Premium
Development of a new composite flow curve statement
Author(s) -
Lehmann Gunter,
Lemke Jürgen
Publication year - 1998
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199805542
Subject(s) - statement (logic) , flow (mathematics) , composite number , problem statement , range (aeronautics) , function (biology) , curve fitting , power (physics) , mathematics , mechanics , materials science , thermodynamics , algorithm , engineering , composite material , statistics , geometry , physics , management science , evolutionary biology , political science , law , biology
A new composite flow curve statement is presented, which allows good approximation of the flow curve and is suitable for numeric simulations. Without restrictions, it holds over the entire range of validity of a flow curve as a function of plastic strain, plastic strain rate and temperature. Simultaneously, it can be used for any material so that it is well suited for material databases. The number of coefficients used is higher than in other flow curve statements; however, the coefficients are calculated more easily and partially by automatic procedures. The described composite statement can be integrated so that it can be employed in analytical calculations, e.g. of force and power requirements.