TY - GEN
T1 - Modeling of strain rate history effects in BCC metals
AU - Simunovic, Srdjan
AU - Nukala, Phani V.V.K.
PY - 2005
Y1 - 2005
N2 - We propose a new material modeling approach for BCC metals, based on the addition of an internal state variable for modeling the strain rate history effects. The new internal state variable, rISV, has the dimensions of the strain rate and associates the material microstructural state at a given plastic strain to an equivalent state that would be produced by a constant strain rate test of magnitude rISV. The proposed formulation accounts for the strain rate history effects where the transients due to strain rate jumps are significant. The proposed concept is also applicable for modeling discontinuous yielding phenomena and peak forces during impact.
AB - We propose a new material modeling approach for BCC metals, based on the addition of an internal state variable for modeling the strain rate history effects. The new internal state variable, rISV, has the dimensions of the strain rate and associates the material microstructural state at a given plastic strain to an equivalent state that would be produced by a constant strain rate test of magnitude rISV. The proposed formulation accounts for the strain rate history effects where the transients due to strain rate jumps are significant. The proposed concept is also applicable for modeling discontinuous yielding phenomena and peak forces during impact.
KW - BCC metals
KW - Strain rate history
KW - Strain rate sensitivity
UR - http://www.scopus.com/inward/record.url?scp=80053440244&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:80053440244
SN - 0080444814
SN - 9780080444819
T3 - 3rd M.I.T. Conference on Computational Fluid and Solid Mechanics
SP - 495
EP - 497
BT - 3rd M.I.T. Conference on Computational Fluid and Solid Mechanics
T2 - 3rd M.I.T. Conference on Computational Fluid and Solid Mechanics
Y2 - 14 June 2005 through 17 June 2005
ER -