4.15.1.8. BoundingCamClay¶

nDMaterial('BoundingCamClay', matTag, massDensity, C, bulkMod, OCR, mu_o, alpha, lambda, h, m)

This command is used to construct a multi-dimensional bounding surface Cam Clay material object after Borja et al. (2001).

`matTag` (int)	integer tag identifying material
`massDensity` (float)	mass density
`C` (float)	ellipsoidal axis ratio (defines shape of ellipsoidal loading/bounding surfaces)
`bulkMod` (float)	initial bulk modulus
`OCR` (float)	overconsolidation ratio
`mu_o` (float)	initial shear modulus
`alpha` (float)	pressure-dependency parameter for modulii (greater than or equal to zero)
`lambda` (float)	soil compressibility index for virgin loading
`h` (float)	hardening parameter for plastic response inside of bounding surface (if h = 0, no hardening)
`m` (float)	hardening parameter (exponent) for plastic response inside of bounding surface (if m = 0, only linear hardening)

The material formulations for the BoundingCamClay object are: