Simulation of lamellar cast iron components under TMF-loads
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In: Materials Today: Proceedings, Vol. 4.2017, No. 5, Part 1, 24.08.2017, p. 5957-5962.
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TY - JOUR
T1 - Simulation of lamellar cast iron components under TMF-loads
AU - Strohhäussl, Bernd
AU - Stoschka, Michael
AU - Winter, Gerhard
AU - Grün, Florian
PY - 2017/8/24
Y1 - 2017/8/24
N2 - The mechanical modelling of components made of grey cast iron is a non-trivial task, especially when subjected to non-isothermal thermo-mechanical loading conditions. Hence, elasto-plastic deformations as well as time-dependent creep processes have to be taken into account in the simulation in order to accurately model the mechanical stress-strain relationship. Consequently, a methodology to simulate the complex deformation behaviour based on a damage modified viscoplastic constitutive model is introduced. This methodology also contains a semi-automated parameter optimization strategy featuring a genetic algorithm. The correspondingly conducted cyclic mechanical simulation runs match well with the experimental data. Only marginal deviations in the evaluated stress-strain hysteresis can be found at quite high temperatures.
AB - The mechanical modelling of components made of grey cast iron is a non-trivial task, especially when subjected to non-isothermal thermo-mechanical loading conditions. Hence, elasto-plastic deformations as well as time-dependent creep processes have to be taken into account in the simulation in order to accurately model the mechanical stress-strain relationship. Consequently, a methodology to simulate the complex deformation behaviour based on a damage modified viscoplastic constitutive model is introduced. This methodology also contains a semi-automated parameter optimization strategy featuring a genetic algorithm. The correspondingly conducted cyclic mechanical simulation runs match well with the experimental data. Only marginal deviations in the evaluated stress-strain hysteresis can be found at quite high temperatures.
KW - Cast iron
KW - Constitutive material model
KW - Cyclic viscoplasticity
KW - Damage mechanics
KW - Genetic algorithm
KW - Thermo-mechanical fatigue (TMF)
UR - http://www.scopus.com/inward/record.url?scp=85028357767&partnerID=8YFLogxK
U2 - 10.1016/j.matpr.2017.06.077
DO - 10.1016/j.matpr.2017.06.077
M3 - Article
AN - SCOPUS:85028357767
VL - 4.2017
SP - 5957
EP - 5962
JO - Materials Today: Proceedings
JF - Materials Today: Proceedings
SN - 2214-7853
IS - 5, Part 1
ER -
