OilDamper Material: Difference between revisions
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(Created page with '{{CommandManualMenu}} This command is used to construct an OilDamper material, which simulates the hysteretic response of bilinear oil dampers with a valve relief. Two adaptive ...') |
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| style="width:5px" | '''[1]''' || Akcelyan, S., and Lignos, D.G. (2015), “Adaptive Numerical Method Algorithms for Nonlinear Viscous and Bilinear Oil Damper Models Under Random Vibrations”, ASCE Journal of Engineering Mechanics, (under review). | | style="width:5px" | '''[1]''' || Akcelyan, S., and Lignos, D.G. (2015), “Adaptive Numerical Method Algorithms for Nonlinear Viscous and Bilinear Oil Damper Models Under Random Vibrations”, ASCE Journal of Engineering Mechanics, (under review). | ||
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Code Developed and Implemented by : <span style="color:blue"> '''''[http://dimitrios-lignos.research.mcgill.ca/PAkcelyan.html Sarven Akcelyan]''''' & '''''[http://dimitrios-lignos.research.mcgill.ca/PLignos.html Prof. Dimitrios G. Lignos]''''', (McGill University) </span> | Code Developed and Implemented by : <span style="color:blue"> '''''[http://dimitrios-lignos.research.mcgill.ca/PAkcelyan.html Sarven Akcelyan]''''' & '''''[http://dimitrios-lignos.research.mcgill.ca/PLignos.html Prof. Dimitrios G. Lignos]''''', (McGill University) </span> | ||
Revision as of 13:55, 17 May 2015
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This command is used to construct an OilDamper material, which simulates the hysteretic response of bilinear oil dampers with a valve relief. Two adaptive iterative algorithms have been implemented and validated to solve numerically the constitutive equations within a bilinear oil damper with a high-precision accuracy.
| uniaxialMaterial OilDamper $matTag $K $Cd $alpha <$Fr $p> <$LGap> < $NM $RelTol $AbsTol $MaxHalf> |
| $matTag | integer tag identifying material |
| $K | Elastic stiffness of linear spring (to model the axial flexibility of an oil damper (brace and damper portion) |
| $Cd | Viscous parameter of oil damper |
| $alpha | Viscocity exponent |
| $Fr | Damper relief force (Damper property) |
| $p | Post-relief damping coefficient ratio (Damper property) |
| $LGap | gap length to simulate the gap length due to the pin tolerance |
| $NM | Employed adaptive numerical algorithm (default value NM = 1; 1 = Dormand-Prince54, 2=adaptive finite difference) |
| $RelTol | Tolerance for absolute relative error control of the adaptive iterative algorithm (default value 10^-6) |
| $AbsTol | Tolerance for absolute error control of adaptive iterative algorithm (default value 10^-6) |
| $MaxHalf | Maximum number of sub-step iterations within an integration step (default value 15) |
Examples: |- |- |}
References:
| [1] | Akcelyan, S., and Lignos, D.G. (2015), “Adaptive Numerical Method Algorithms for Nonlinear Viscous and Bilinear Oil Damper Models Under Random Vibrations”, ASCE Journal of Engineering Mechanics, (under review). |
Code Developed and Implemented by : Sarven Akcelyan & Prof. Dimitrios G. Lignos, (McGill University)