Institute of Fundamental Technological Research
Polish Academy of Sciences

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Daniel Kujawski


Doctoral thesis
1978 Plastyczne i lepkie efekty przy cyklicznej deformacji metali 
supervisor -- Prof. Zenon Mróz, PhD, DSc, IPPT PAN
 

Recent publications
1.  Kujawski D., Mróz Z., A viscoplastic material model and its application to cyclic loading, ACTA MECHANICA, ISSN: 0001-5970, DOI: 10.1007/BF01214633, Vol.36, No.3, pp.213-230, 1980

Abstract:
A kinematic hardening model is generalized by introducing plastic and viscous residual “back” stresses α, β that govern the translation of the yield surface. The evolution equations for α and β are proposed and the material functions are identified for a construction steel by carrying out tension-compression tests at different strain rates. The cyclic tests with changing strain amplitudes and frequencies are next carried out and model predictions are compared with experimental results.

Affiliations:
Kujawski D. - other affiliation
Mróz Z. - IPPT PAN

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