4.13.5.31. AxialSpHD Material¶

uniaxialMaterial('AxialSpHD', matTag, sce, fty, fcy, <bte, bty, bth, bcy, fcr, ath>)

This command is used to construct a uniaxial AxialSpHD material object. This material model produces axial stress-strain curve of elastomeric bearings including hardening behavior.

`matTag` (int)	integer tag identifying material
`sce` (float)	compressive modulus
`fty` `fcy` (float)	yield stress under tension (`fty`) and compression (`fcy`) (see note 1)
`bte` `bty` `bth` `bcy` (float)	reduction rate for tensile elastic range (`bte`), tensile yielding (`bty`), tensile hardening ( `bth`) and compressive yielding (`bcy`) (see note 1)
`fcr` (float)	target point stress (see note 1)
`ath` (float)	hardening strain ratio to yield strain

Note

Input parameters are required to satisfy followings.

fcy < 0.0 < fty

0.0 <= bty < bth < bte <= 1.0

0.0 <= bcy <= 1.0

fcy <= fcr <= 0.0

1.0 <= ath