Difference between revisions of "Imperfect Interface Material"
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== Constitutive Law == | == Constitutive Law == | ||
Interface materials are used only [[NairnFEA] and are only linear elastic. The [[Imperfect Interfaces|imperfect interfaces]] documentation gives the details. The constitutive law relates normal and tangential tractions on the interface to displacement discontinuities: | Interface materials are used only [[NairnFEA]] and are only linear elastic. The [[Imperfect Interfaces|imperfect interfaces]] documentation gives the details. The constitutive law relates normal and tangential tractions on the interface to displacement discontinuities: | ||
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Revision as of 09:14, 15 September 2013
Constitutive Law
Interface materials are used only NairnFEA and are only linear elastic. The imperfect interfaces documentation gives the details. The constitutive law relates normal and tangential tractions on the interface to displacement discontinuities:
[math]\displaystyle{ T_n = D_n[u_n] \qquad {\rm and } \qquad T_t = D_t[u_t] }[/math]
where Dn and Dt are interfacial stiffness parametes and [un] and [ut]. Here n and t refer to normal an tangential directions relative the the interface.
| Property | Description | Units | Default |
|---|---|---|---|
| Dn | Normal direction stiffness | MPa/mm | none |
| Dt | Tangential direction stiffness | MPa/mm | none |
History Variables
None