structure pile property command
Syntax
- structure pile property keyword ... <range>
Primary keywords:
cross-sectional-area density direction-y moi-y moi-z plastic-moment plastic-moment-y plastic-moment-z plastic-shear plastic-shear-y plastic-shear-z shear-coefficient-y shear-coefficient-z spacing thermal-expansion torsion-constant coupling-cohesion-normal coupling-cohesion-shear coupling-friction-normal coupling-friction-shear coupling-gap-normal coupling-stiffness-normal coupling-stiffness-shear perimeter slide slide-tolerance coupling-cohesion-table coupling-confining-flag coupling-confining-table coupling-friction-table rockbolt-flag tensile-failure-strain yield-compression yield-tension
Assigns properties to pile elements in the range. The properties consist of constitutive model properties, beam-type properties, coupling-spring properties and rockbolt properties. The constitutive model property names are primary keywords, but are not included in the list above. The following properties are available, with the constitutive model properties listed first.
Beam Constitutive Model Properties
All beam constitutive models have properties associated with them. Properties are name value pairs, where the name is the keyword given in the command and the value type is specific to the property. The assignment will affect any beam-type element in the specified range whose constitutive model includes the property named (noting that some properties, such as young, appear in multiple beam constitutive models). There are four beam constitutive models: one elastic model, and three elastic-plastic models.
Beam Elastic Constitutive Model
Elastic
The isotropic elastic model: properties, description.
Beam Elastic-Plastic Constitutive Models
Mohr Coulomb
The Mohr Coulomb elasto-plasticity model in one-dimensional mode: properties, model description, plastic-modeling description.
Mohr Coulomb Strain Softening
The strain-softening/hardening Mohr Coulomb elasto-plasticity model in one-dimensional mode: properties, model description, plastic-modeling description.
von Mises
The von Mises elasto-plasticity model in one-dimensional mode: properties, model description, plastic-modeling description.
Beam-Type Properties
These are the properties of the beam material (see Beam-Type Properties).
- cross-sectional-area f
cross-sectional area
- density f
mass density
- direction-y v
direction-y vector whose projection onto the element cross-section defines the \(y\)-axis of the element coordinate system
- moi-y f
moment of inertia with respect to element \(y\)-axis
- moi-z f
moment of inertia with respect to element \(z\)-axis
- plastic-moment f
plastic moment capacity in Y and Z
- plastic-moment-y f
plastic moment capacity in Y
- plastic-moment-z f
plastic moment capacity in Z
- plastic-shear f
plastic shear capacity in Y and Z
- plastic-shear-y f
plastic shear capacity in Y
- plastic-shear-z f
plastic shear capacity in Z
- shear-coefficient-y f
shear coefficient for transverse shear deformation in the \(y\)-direction (Timoshenko beam only)
- shear-coefficient-z f
shear coefficient for transverse shear deformation in the \(z\)-direction (Timoshenko beam only)
- spacing f
spacing (2D only)
- thermal-expansion f
thermal-expansion coefficient
- torsion-constant f
torsion constant
Coupling-Spring Properties
The coupling springs connect the pile to the target object (zones in FLAC3D and 3DEC, and particles in PFC3D). The coupling-spring properties are as follows. Refer to Coupling-Spring Properties for a detailed description of the coupling-spring properties.
- coupling-cohesion-normal f
normal coupling spring cohesion per unit length
- coupling-cohesion-shear f
shear coupling spring cohesion per unit length
- coupling-friction-normal f
normal coupling spring friction angle
- coupling-friction-shear f
shear coupling spring friction angle
- coupling-gap-normal b
normal coupling spring gap-use flag
- coupling-stiffness-normal f
normal coupling spring stiffness
- coupling-stiffness-shear f
shear coupling spring stiffness
- perimeter f
exposed perimeter
- slide b
large-strain sliding flag
- slide-tolerance f
large-strain sliding tolerance
Rockbolt Properties
The rockbolt properties are as follows. Refer to Rockbolt Properties for a detailed description of these properties.
- coupling-cohesion-table s
name of the table relating cohesion of shear coupling spring to relative shear displacement
- coupling-confining-flag b
flag to activate incremental confining stress logic
- coupling-confining-table s
name of the table relating effective confining stress factor to deviatoric stress
- coupling-friction-table s
name of the table relating friction angle of shear coupling spring to relative shear displacement
- rockbolt-flag b
flag to activate rockbolt logic
- tensile-failure-strain f
tensile failure strain (non-dimensional, only active if rockbolt-flag is on)
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