Bilin Material: Difference between revisions

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[[Image:Steel01.gif]]
[[Image:ModIKModel.PNG]]


Steel01 Material -- Hysteretic Behavior of Model w/o Isotropic Hardening
[[Image:Steel01HystereticA.jpg]]
Steel01 Material -- Hysteretic Behavior of Model with Isotropic Hardening in Compression
[[Image:Steel01HystereticB.jpg]]
Steel01 Material -- Hysteretic Behavior of Model with Isotropic Hardening in Tension
[[Image:Steel01HystereticC.jpg]]


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Code Developed by : <span style="color:blue"> by Dr. Dimitrios Lignos, Stanford University and was implemented by Dr. Theodore Karavasilis </span>
Code Developed by : <span style="color:blue"> by Dr. Dimitrios Lignos, Stanford University and was implemented by Dr. Theodore Karavasilis </span>

Revision as of 20:43, 28 August 2010




This command is used to construct a bilin something or other

uniaxialMaterial Bilin $matTag $K0 $as_Plus $as_Neg $My_Plus $My_Neg $Lamda_S $Lamda_C $Lamda_A $Lamda_K $c_S $c_C $c_A $c_K $theta_p_Plus $theta_p_Neg $theta_pc_Plus $theta_pc_Neg $Res_Pos $Res_Neg $theta_u_Plus $theta_u_Neg $D_Plus $D_Neg

$matTag integer tag identifying material
$K0 elastic stiffness
$as_Plus strain hardening ratio for positive loading direction
$as_Neg strain hardening ratio for negative loading direction
$My_Plus effective yield strength for positive loading direction
$My_Neg effective yield strength for negative loading direction
$Lamda_S Cyclic deterioration parameter for strength deterioration
$Lamda_C Cyclic deterioration parameter for post-capping strength deterioration
$Lamda_A Cyclic deterioration parameter for acceleration reloading stiffness deterioration (is not a deterioration mode for a component with Bilinear hysteretic response).
$Lamda_K Cyclic deterioration parameter for unloading stiffness deterioration
$c_S rate of strength deterioration
$c_C rate of post-capping strength deterioration
$c_A rate of accelerated reloading deterioration
$c_K rate of unloading stiffness deterioration




Code Developed by : by Dr. Dimitrios Lignos, Stanford University and was implemented by Dr. Theodore Karavasilis