OpenSees Material Tester

Interactive tool to explore material behavior and hysteresis under different loading protocols

Ready to run analysis. Configure material and loading parameters below.

Material Type

matTag (1)

integer tag identifying material

Fy (350)

yield strength

E0 (200000)

initial elastic tangent

b (0.01)

strain-hardening ratio (ratio between post-yield tangent and initial elastic tangent)

a1 (0)

isotropic hardening parameter

a2 (1)

isotropic hardening parameter (see explanation under isotropic hardening)

a3 (0)

isotropic hardening parameter

a4 (1)

isotropic hardening parameter (see explanation under isotropic hardening)

No loading protocol data

Bilinear steel material with kinematic hardening and optional isotropic hardening.

# Example syntax:

# uniaxialMaterial('Steel01', matTag, Fy, E0, b, a1=0.0, a2=1.0, a3=0.0, a4=1.0)

# Current settings:

uniaxialMaterial('Steel01', 1, 350, 200000, 0.01, 0, 1, 0, 1)

This material model requires 8 parameters

Protocol Type

Max Strain (%)

Number of Cycles

Strain Increment

Approx Number of Steps

The selected loading is applied automatically to the next analysis.

Current Material

Upload Backbone

Backbone format: strain,stress (one pair per line)