Difference between revisions of "Imperfect Interface Material"
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(Created page with "== Constitutive Law == Interface materials are used only [[NairnFEA] and are only linear elastic. The imperfect interfaces documentation gives the de...") |
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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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<math>T_n = D_n[u_n] \qquad {\rm and } \qquad T_t = D_t[u_t]</math> | |||
where D<sub>n</sub> and D<sub>t</sub> are interfacial stiffness parametes and [u<sub>n</sub>] and [u<sub>t</sub>]. Here n and t refer to normal an tangential directions relative the the interface. | |||
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== History Variables == | == History Variables == | ||
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== Examples == | == Examples == | ||
Revision as of 10:14, 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