User subroutine HARDINI is used to define initial conditions for the hardening variables and . These initial conditions are used to solve for the mechanical response of an M3D4 element with rebar in uniaxial tension. The problem definition is the same as in the verification file mplchi3nt1.inp (“Rate-independent plasticity in ABAQUS/Standard,” Section 2.2.9), where the initial conditions are specified through data lines on the *INITIAL CONDITIONS, TYPE=HARDENING option. This input file verifies that initial conditions are assigned correctly using user subroutine HARDINI.