3.1.5.22. Elastic No Tension Material

This command constructs an elastic uniaxial material with no tensile strength. In OpenSees the material type is ENT.

uniaxialMaterial ENT $matTag $E <$A $B>

Argument	Type	Description
$matTag	integer	unique material tag
$E	float	stiffness in compression
$A	float	optional tension scaling factor (default 0.0)
$B	float	optional tension-shape parameter (default 1.0)

In compression the stress is \(\sigma = E \varepsilon\); in tension it is \(\sigma = A E \tanh(B \varepsilon)\) when \(A \neq 0\), and zero when \(A = 0\) (the default).

Example

1. Tcl Code

uniaxialMaterial ENT 1 3000.0

2. Python Code

ops.uniaxialMaterial('ENT', 1, 3000.0)

Code Developed by: fmk