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Yuksel-RudyYuksel-Rudy
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fixing EAd_MBL_LM into EAd_LM
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‎docs/usage.rst‎

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Original file line numberDiff line numberDiff line change
@@ -89,7 +89,7 @@ information must include a static stiffness value (EAs), and a
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dynamic stiffness value (EAd). An additional factor on EAd that
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scales with mean tension (EAd_Lm) can also be included. When using
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a mooring line properties library (i.e., a yaml file), these values
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should be specified by the EA_MBL, EAd_MBL, and EAd_MBL_Lm keywords,
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should be specified by the EA_MBL, EAd_MBL, and EAD_LM keywords,
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respectively. See the file moorprops_default.yaml for
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more information.
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‎moorpy/helpers.py‎

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@@ -722,7 +722,7 @@ def getLineProps(dnommm, material, lineProps=None, source=None, name="", rho=102
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# stiffness values for viscoelastic approach
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EAd = mat['EAd_MBL']*MBL # dynamic stiffness constant: Krd alpha term x MBL [N]
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EAd_Lm = mat['EAd_MBL_Lm'] # dynamic stiffness Lm slope: Krd beta term (to be multiplied by mean load) [-]
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EAd_Lm = mat['EAD_LM'] # dynamic stiffness Lm slope: Krd beta term (to be multiplied by mean load) [-]
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# Set up a main identifier for the linetype unless one is provided
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if name=="":
@@ -797,7 +797,7 @@ def loadLineProps(source):
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output[mat]['EA_dmax' ] = getFromDict(props, 'EA_dmax' , default=-1.0) # -1 to disable checking
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output[mat]['EA_MBL' ] = getFromDict(props, 'EA_MBL' , default=0.0)
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output[mat]['EAd_MBL' ] = getFromDict(props, 'EAd_MBL' , default=0.0)
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output[mat]['EAd_MBL_Lm']= getFromDict(props, 'EAd_MBL_Lm',default=0.0)
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output[mat]['EAD_LM' ] = getFromDict(props, 'EAD_LM' ,default=0.0)
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output[mat]['Cd' ] = getFromDict(props, 'Cd' , default=0.0)
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output[mat]['Cd_ax' ] = getFromDict(props, 'Cd_ax' , default=0.0)
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output[mat]['Ca' ] = getFromDict(props, 'Ca' , default=0.0)

‎moorpy/library/MoorProps_default.yaml‎

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@@ -20,7 +20,7 @@
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# EA_dmax : # maximum valid diameter for the EA curve (values < 0 ignored)
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# EA_MBL : # (quasi-static) stiffness per MBL [N/N] (aka Kr, Krs)
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# EAd_MBL : # dynamic stiffness per MBL [N/N] (aka Krd or Krd_alpha)
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# EAd_MBL_Lm: # dynamic stiffness per MBL per fraction of mean load (not %) [N/N] (aka Krd_beta)
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# EAD_LM: # dynamic stiffness per MBL per fraction of mean load (not %) [N/N] (aka Krd_beta)
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#
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# dvol_dnom : # volume-equivalent diameter per nominal diameter [-]
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# density : # density of the line material [kg/m^3] (e.g., chain density = 7850 kg/m^3)
@@ -95,7 +95,7 @@ lineProps:
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MBL_d2 : 308e6 # minimum breaking load per diameter^2 [N/m^2]
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EA_MBL : 14 # quasi-static stiffness per MBL [N/N]
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EAd_MBL : 11.6 # dynamic stiffness per MBL [N/N]
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EAd_MBL_Lm : 40.0 # dynamic stiffness per MBL per fraction of mean load (not %) [N/N] (beta term to be multiplied with the absolute mean tension)
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EAD_LM : 40.0 # dynamic stiffness per fraction of mean load [N] (beta term to be multiplied with the absolute mean tension)
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density : 1380 # density of the polyester material [kg/m^3] (taken from specific gravity of 1.38, relative to 1000 kg/m^3)
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cost_MBL : 2.3e-05 # cost per MBL [$/m/N]
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Cd : 2.021 # drag coefficient based on DNV-OS-E301 adjusted for use with volumetric diameter
@@ -108,7 +108,7 @@ lineProps:
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MBL_d2 : 207e6 # minimum breaking load per diameter^2 [N/m^2]
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EA_MBL : 5 # quasi-static stiffness per MBL [N/N] (can range from 1 to 10)
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EAd_MBL : 2.08 # dynamic stiffness per MBL [N/N]
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EAd_MBL_Lm : 39.0 # dynamic stiffness per MBL per fraction of mean load (not %) [N/N] (beta term to be multiplied with the absolute mean tension)
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EAD_LM : 39.0 # dynamic stiffness per fraction of mean load [N/N] (beta term to be multiplied with the absolute mean tension)
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density : 1140 # density of the nylon material [kg/m^3] (taken from specific gravity of 1.14, relative to 1000 kg/m^3)
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cost_MBL : 4.29e-05 # cost per MBL [$/m/N]
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Cd : 1.979 # drag coefficient based on DNV-OS-E301 adjusted for use with volumetric diameter
@@ -121,7 +121,7 @@ lineProps:
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MBL_d2 : 580e6 # minimum breaking load per diameter^2 [N/m^2]
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EA_MBL : 56 # quasi-static stiffness per MBL [N/N]
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EAd_MBL : 59 # dynamic stiffness per MBL [N/N]
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EAd_MBL_Lm : 54.0 # dynamic stiffness per MBL per fraction of mean load (not %) [N/N] (beta term to be multiplied with the absolute mean tension)
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EAD_LM : 54.0 # dynamic stiffness per fraction of mean load [N/N] (beta term to be multiplied with the absolute mean tension)
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density : 975 # density of the hmpe/dyneema material [kg/m^3] (taken from specific gravity of 0.975, relative to 1000 kg/m^3
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Cd : 1.988 # drag coefficient based on DNV-OS-E301 adjusted for use with volumetric diameter
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Ca : 1.1 # added mass coefficient based on Bureau Veritas 493-NR_2021-07

‎moorpy/library/MoorProps_newCosts.yaml‎

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@@ -26,7 +26,7 @@
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# EA_dmax : # maximum valid diameter for the EA curve (values < 0 ignored)
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# EA_MBL : # (quasi-static) stiffness per MBL [N/N] (aka Kr, Krs)
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# EAd_MBL : # dynamic stiffness per MBL [N/N] (aka Krd or Krd_alpha)
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# EAd_MBL_Lm: # dynamic stiffness per MBL per fraction of mean load (not %) [N/N] (aka or Krd_beta)
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# EAD_LM: # dynamic stiffness per MBL per fraction of mean load (not %) [N/N] (aka or Krd_beta)
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#
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# dvol_dnom : # volume-equivalent diameter per nominal diameter [-]
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# density : # density of the line material [kg/m^3] (e.g., chain density = 7850 kg/m^3)
@@ -106,7 +106,7 @@ lineProps:
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MBL_d2 : 308e6 # minimum breaking load per diameter^2 [N/m^2]
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EA_MBL : 14 # quasi-static stiffness per MBL [N/N]
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EAd_MBL : 11.6 # dynamic stiffness per MBL [N/N]
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EAd_MBL_Lm : 40.0 # dynamic stiffness per MBL per fraction of mean load (not %) [N/N] (beta term to be multiplied with the absolute mean tension)
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EAD_LM : 40.0 # dynamic stiffness per fraction of mean load [N/N] (beta term to be multiplied with the absolute mean tension)
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density : 1380 # density of the polyester material [kg/m^3] (taken from specific gravity of 1.38, relative to 1000 kg/m^3)
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cost_d : 1.17e2 # cost per meter per diameter [2024$/m^2]
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cost_d2 : 1.27e4 # cost per meter per diameter^2 [2024$/m^3]
@@ -120,7 +120,7 @@ lineProps:
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MBL_d2 : 207e6 # minimum breaking load per diameter^2 [N/m^2]
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EA_MBL : 5 # quasi-static stiffness per MBL [N/N] (can range from 1 to 10)
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EAd_MBL : 2.08 # dynamic stiffness per MBL [N/N]
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EAd_MBL_Lm : 39.0 # dynamic stiffness per MBL per fraction of mean load (not %) [N/N] (beta term to be multiplied with the absolute mean tension)
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EAD_LM : 39.0 # dynamic stiffness per fraction of mean load [N/N] (beta term to be multiplied with the absolute mean tension)
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density : 1140 # density of the nylon material [kg/m^3] (taken from specific gravity of 1.14, relative to 1000 kg/m^3)
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cost_d : 9.84 # cost per meter per diameter [2024$/m^2]
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cost_d2 : 1.43e4 # cost per meter per diameter^2 [2024$/m^3]
@@ -134,7 +134,7 @@ lineProps:
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MBL_d2 : 580e6 # minimum breaking load per diameter^2 [N/m^2]
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EA_MBL : 56 # quasi-static stiffness per MBL [N/N]
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EAd_MBL : 59 # dynamic stiffness per MBL [N/N]
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EAd_MBL_Lm : 54.0 # dynamic stiffness per MBL per fraction of mean load (not %) [N/N] (beta term to be multiplied with the absolute mean tension)
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EAD_LM : 54.0 # dynamic stiffness per fraction of mean load [N] (beta term to be multiplied with the absolute mean tension)
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density : 975 # density of the hmpe/dyneema material [kg/m^3] (taken from specific gravity of 0.975, relative to 1000 kg/m^3
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Cd : 1.988 # drag coefficient based on DNV-OS-E301 adjusted for use with volumetric diameter
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Ca : 1.1 # added mass coefficient based on Bureau Veritas 493-NR_2021-07

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