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Add/Delete/Modify
Define a new dynamic material property function, or check, modify or delete the existing input data.
Function Name
[ID] : Define the function ID number.
[Name] : Input the function name.
[Description] : Display a simple description that explains the shear strain function.
Initialization
Conduct the reset function on the entered data.
Database
Import the database suggested by previous researchers.
Add/Modify Dynamic Curve Function
The database supported on the FFA (Free Field Analysis) is shown on the following table.
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Classification
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Database
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Shear modulus damping ratio curve
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Clay - PI=10-20 (Sun et al.)
Clay - PI=20-40 (Sun et al.)
Clay - PI=40-80 (Sun et al.)
Clay - PI=5-10 (Sun et al.)
Clay - PI=80+ (Sun et al.)
Clay (Seed and Sun 1989)
Gravel (Seed et al.)
Linear
Rock
Rock (Idriss)
Sand (Seed & Idriss ) - Lower Bound
Sand (Seed & Idriss) - Average
Sand (Seed & Idriss) - Upper Bound
Sand (Seed and Idriss 1970)
Vucetic - Dobry
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Damping ratio curve
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Clay - Lower Bound (Sun et al.)
Clay - Average (Sun et al.)
Clay - Upper Bound (Sun et al.)
Clay (Idriss 1990)
Gravel (Seed et al.)
Linear
Rock
Rock (Idriss)
Sand (Idriss 1990)
Sand (Seed & Idriss ) - Lower Bound
Sand (Seed & Idriss) - Average
Sand (Seed & Idriss) - Upper Bound
Vucetic - Dobry
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Import
Import the saved data file.
Export
Save the entered data as a file.
Using Dynamic Curve Equation
Define the material property values from the various existing databases. The dialog boxes below represent the Japan Public Works Research Institute (JPWRI) equation, Port facility technical standard, Yasda’s method, Database according to the liquefaction manual, Japan Building Standard Law no.1457 and Yamade’s equation.
 
<PWRI equation> <Method of the technical standards of port facilities>
 
<Asuda’s method> <Liquidal manual>
 
<The building standard law of Japan, no.1457> <Yamade’s equation>
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Define the shear modulus and damping ratio function depending on the shear strain to consider the non-linear, non-elastic behavior of the ground.
