Difference between revisions of "Damage Initiation Laws"
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== Introduction == | == Introduction == | ||
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 | 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 reach 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 == | ||
You create | You create a damage initiation law using an <tt>Initiation</tt> material property within a [[Material Command Block|<tt>Material</tt> command block]]. You pick the law by name or ID. After picking the law, all its properties are set using property commands. Refer to each damage initiation law type to learn about its failure envelope and about its possible properties. | ||
== | == Damage Initiation Law Materials == | ||
This table lists the available | This table lists the available damage initiation law. Click each one for more details and information on their properties. | ||
{| class="wikitable" | {| class="wikitable" | ||
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! Name !! ID !! Description | ! Name !! ID !! Description | ||
|- | |- | ||
| [[ | | [[Maximum Principle Stress Initiation|MaxPrinciple]] || 1 || Damage initiates with principle stress exceeds tensile strength or when maximum shear stress exceeds the shear strength. | ||
|} | |} | ||
It is relatively easy to write code for new | It is relatively easy to write code for new damage initiation laws, if needed. | ||
Revision as of 14:42, 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 reach 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 a damage initiation law using an Initiation material property within a Material command block. You pick the law by name or ID. After picking the law, all its properties are set using property commands. Refer to each damage initiation law type to learn about its failure envelope and about its possible properties.
Damage Initiation Law Materials
This table lists the available damage initiation law. Click each one for more details and information on their properties.
| Name | ID | Description |
|---|---|---|
| MaxPrinciple | 1 | Damage initiates with principle stress exceeds tensile strength or when maximum shear stress exceeds the shear strength. |
It is relatively easy to write code for new damage initiation laws, if needed.