PressureDependMultiYield03 Material - OpenSeesWiki

PressureDependMultiYield03 Material

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'''NOTE:'''
'''NOTE:'''
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The following values are suggested for the model parameters.
 
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{| border="1" cellspacing="0" cellpadding="2"
 
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|-
 
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| Dr=30%
 
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| Dr=40%
 
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| Dr=50%
 
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| Dr=60%
 
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| Dr=75%
 
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|-
 
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| rho
 
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| 1.7 ton/m<sup>3</sup> or
 
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1.59x10<sup>-4</sup> (lbf)(s<sup>2</sup>)/in<sup>4</sup>
 
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| 1.8 ton/m<sup>3</sup> or
 
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1.685x10<sup>-4</sup> (lbf)(s<sup>2</sup>)/in<sup>4</sup>
 
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| 1.9 ton/m<sup>3</sup> or
 
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1.778x10<sup>-4</sup> (lbf)(s<sup>2</sup>)/in<sup>4</sup> 
 
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| 2.0 ton/m<sup>3</sup> or
 
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1.872x10<sup>-4</sup> (lbf)(s<sup>2</sup>)/in<sup>4</sup>
 
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| 2.1 ton/m<sup>3</sup> or
 
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1.965x10<sup>-4</sup> (lbf)(s<sup>2</sup>)/in<sup>4</sup>
 
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|-
 
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|  refShearModul
 
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(at p’<sub>r</sub>=80 kPa or 11.6 psi)
 
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| 6x10<sup>4</sup> kPa or
 
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8.702x10<sup>3</sup> psi
 
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| 9x10<sup>4</sup> kPa or
 
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1.305x10<sup>4</sup> psi
 
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| 10x10<sup>4</sup> kPa or
 
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1.45x10<sup>4</sup> psi
 
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| 11x10<sup>4</sup> kPa or
 
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1.595x10<sup>4</sup> psi
 
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| 13x10<sup>4</sup> kPa or
 
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1.885x10<sup>4</sup> psi
 
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|-
 
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|  refBulkModu
 
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(at p’<sub>r</sub>=80 kPa or 11.6 psi)
 
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| 16x10<sup>4</sup> kPa or
 
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2.321x10<sup>4</sup> psi (K<sub>o</sub>=0.5)
 
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| 22x10<sup>4</sup> kPa or
 
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3.191x10<sup>4</sup> psi (K<sub>o</sub>=0.47)
 
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| 23.3x10<sup>4</sup> kPa or
 
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3.379x10<sup>4</sup> psi (K<sub>o</sub>=0.45)
 
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| 24x10<sup>4</sup> kPa or
 
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3.481x10<sup>4</sup> psi (K<sub>o</sub>=0.43)
 
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| 26x10<sup>4</sup> kPa or
 
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3.771x10<sup>4</sup> psi (K<sub>o</sub>=0.4)
 
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|-
 
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|  frictionAng
 
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| 31
 
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| 32
 
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| 33.5
 
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| 35
 
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| 36.5
 
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|-
 
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|  PTAng
 
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| 31
 
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| 26
 
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| 25.5
 
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| 26
 
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| 26
 
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|-
 
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|  peakShearStra
 
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(at p’<sub>r</sub>=101 kPa or 14.65  psi)
 
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|colspan="5"| <center>0.1</center>
 
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|-
 
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|  refPress (p’<sub>r</sub>,)
 
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|colspan="5"| <center>101 kPa or 14.65 psi</center>
 
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|-
 
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|  pressDependCoe
 
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|colspan="5"| <center>0.5</center>
 
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|-
 
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|  Contrac1
 
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| 0.087
 
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| 0.067
 
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| 0.045
 
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| 0.028
 
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| 0.013
 
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|-
 
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|  Contrac3
 
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| 0.18
 
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| 0.23
 
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| 0.15
 
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| 0.05
 
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| 0.0
 
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|-
 
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| dilat1
 
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| 0.
 
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| 0.06
 
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| 0.06
 
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| 0.1
 
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| 0.3
 
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|-
 
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|  dilat3
 
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| 0.0
 
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| 0.27
 
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| 0.15
 
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| 0.05
 
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| 0.0
 
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|-
 
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|  e
 
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| 0.85
 
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| 0.77
 
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| 0.7
 
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| 0.65
 
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| 0.55
 
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|}
 

Revision as of 23:17, 10 June 2019




(This page is being updated as of June 10, 2019. Stay tuned)

(The reference for PressureDependMultiYield03 material: Khosravifar, A., Elgamal, A., Lu, J., and Li, J. [2018]. "A 3D model for earthquake-induced liquefaction triggering and post-liquefaction response." Soil Dynamics and Earthquake Engineering, 110, 43-52)

PressureDependMultiYield03 is modified from PressureDependMultiYield02 material to comply with the established guidelines on the dependence of liquefaction triggering to the number of loading cycles, effective overburden stress (Kσ), and static shear stress (Kα). Element drivers for single element simulations under undrained cyclic, undrained monotonic, drained cyclic and drained monotonic loading can be downloaded from http://soilquake.net/opensees.

nDMaterial PressureDependMultiYield03 $tag $nd $rho $refShearModul $refBulkModul $frictionAng $peakShearStra $refPress $pressDependCoe $PTAng $mType $ca $cb $cc $cd $ce $da $db $dc <$noYieldSurf=20 <$r1 $Gs1 …> $liquefac1=1. $liquefac2=0. $pa=101 <$s0=1.73>>


$ca, $cb, $cc, $cd, $ce Non-negative constants defining the rate of contract or pore pressure buildup. See Tables 1 and 2 below for more information.
$da, $db, $dc A non-negative constant reflecting Kσ effect.
$contrac2 Non-negative constants defining the rate of dilation. See Tables 1 and 2 below for more information.
$mType 0: Triaxial Compression; 1: Triaxial Extension; 2: Direct Shear
$s0 Numerical constant (default value = 1.73 kPa). See Tables 1 and 2 below for more information.
Others See PressureDependMultiYield02 material above and Tables 1 and 2 below.


Table 1 provides the proposed calibrated input parameters for PressureDependMultiYield03 for four different relative densities. Table 2 provides a brief description for each parameter and the adopted calibration procedure.


NOTE:




Code Developed by: UC San Diego (Dr. Zhaohui Yang):


UC San Diego Soil Model:




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