Difference between revisions of "Damage Initiation Laws"
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== Introduction == | == Introduction == | ||
Damage initiation laws are used in softening materials to initiate the damage process. They consist of a failure envelope in stress space. Once the current stresses reaches the envelop, the damage process begins. The normal to the failure envelop defines the normal to the plane of damage that is initiated. After initiation, damage propagates, but the damage law is no longer used. | Damage initiation laws are used in [[Material_Models#Softening_Materials|softening materials]] to initiate the damage process. They consist of a failure envelope in stress space. Once the current stresses reaches the envelop, the damage process begins. The normal to the failure envelop defines the normal to the plane of damage that is initiated. After initiation, damage propagates, but the damage law is no longer used. | ||
== Define a Damage Initiation Laws == | == Define a Damage Initiation Laws == | ||
Revision as of 13:37, 13 January 2016
Introduction
Damage initiation laws are used in softening materials to initiate the damage process. They consist of a failure envelope in stress space. Once the current stresses reaches the envelop, the damage process begins. The normal to the failure envelop defines the normal to the plane of damage that is initiated. After initiation, damage propagates, but the damage law is no longer used.
Define a Damage Initiation Laws
You create traction law materials using a Material command block. Within that block all traction properties are set using property commands. Refer to each traction law type to learn about its possible properties.
Traction Law Materials
This table lists the available traction law materials. Click each one for more details and information on their properties.
| Name | ID | Description |
|---|---|---|
| TriangularTraction | 12 | A triangular traction law |
| LinearTraction | 13 | A linear elastic traction law (no failure) |
| CubicTraction | 14 | A cubic traction law |
| TrilinearTraction | 20 | A trilinear traction law |
| CoupledTraction | 23 | A coupled triangular traction law |
| PressureTraction | 26 | A constant normal stress traction law (no failure) |
It is relatively easy to write code for new traction laws, if needed.