cmat modify command

Syntax

contact cmat modify i keyword ... <range>

Primary keywords:

mechanical    method    model    property    proximity    thermal

Modify an existing entry in the CMAT. Assigns the information specified by the keywords to slot i of the CMAT.

By default, only mechanical contacts are considered.

mechanical

Apply to mechanical contacts.

method s <sa a> ...

The contact model method s, along with its specific list of pairs of argument names and values (sa, a) (if applicable), is registered with this cmat entry and will be invoked at contact creation.

model keyword

Specify the contact model.

The list of built-in mechanical contact models is given in the “Built-in Contact Models” section. Users may also implement custom contact models (see “User-Defined Contact Models” for further information) and register them in the CMAT.

arrlinear

Specify the Adhesive Rolling Resistance Linear Model contact model.

bilinear

Specify the Bilinear Contact Model contact model.

burger

Specify the Burger’s Model contact model.

fish

Specify the FISH Model contact model.

flatjoint

Specify the Flat-Joint Model contact model.

hertz

Specify the Hertz Model contact model.

hysteretic

Specify the Hysteretic Model contact model.

linear

Specify the Linear Model contact model.

linearcbond

Specify the Linear Contact Bond Model contact model.

lineardipole (3D ONLY)

Specify the Linear Dipole Model contact model.

linearpbond

Specify the Linear Parallel Bond Model contact model.

null

Specify the Null Model contact model.

rrlinear

Specify the Rolling Resistance Linear Model contact model.

smoothjoint

Specify the Smooth-Joint Model contact model.

softbond

Specify the Soft-Bond Model contact model.

springnetwork

Specify the Spring Network Model contact model.

subspringnetwork

Specify the Subspring Network Model contact model.

property sp a...

The contact model property named sp is set to a.

proximity fd

The detection distance is set to fd.

thermal

Apply to thermal contacts.

Usage Example

contact cmat modify 1 model linearpbond                        ...
                    method deformability    emod 1e6 krat 0.5  ...
                           pb_deformability emod 1e6 krat 0.5  ...
                    property fric 0.25 dp_nratio 0.2           ...
                           pb_ten 1e8 pb_coh 1e8 pb_fa 30.0

from “cmat5.dat” in Using the CMAT