SoilQuake.net

DIANA

DIANA is a finite element package developed by DIANA FEA BV. This analytical software have been used to simulate a variety of complex problems in civil, geotechnical and earthquake engineering.

The UCSD soil models UCSDSAND3 and UCSDCLAY have been integrated into DIANA as user defined material models. These material models are capable of simulating the essential characteristics of sands and clays respectively. Additional references can be found here.

Example of 1D site response analysis which utilizes the demo versions of the soil models is provided below (for illustration purposes). For the 3D full version of the soil models, please contact Prof. Ahmed Elgamal (E-mail: elgamal AT ucsd DOT edu).


1D Seismic Site Response Example

Please follow the steps below to download, install, and run the DIANA_Example. For additional information, please reference the user manual.

Step 1: Download and Installation

    1) If you do not have DIANA installed, please visit https://dianafea.com/ to obtain the analysis package.

    2) Download DIANA_Example.rar (10 MB, updated Coming Soon!)

    3) Please move ucsdsoilmodels.dll (contained in the above Example file) to the main folder of the DIANA installation folder.

    3) Unzip all files in the DIANA_Example.rar to a desired location. The zip file includes the material models (ucsdsoilmodels.dll), and excel sheet interface 1D_Seismic_Site_Response_Example.xlsm).

    4) Update DIANA_location.txt with the location of the DIANA installation.

Step 2: Run 1D_Seismic_Site_Response_Example

    1) Open 1D_Seismic_Site_Response_Example.xlsm. If prompted please enable macros. This Excel sheet makes use of macros to generate input files for DIANA and run the analysis.

    2) Update the material and analysis parameters shown on the Excel sheet and then click "Create Input and Run" to start the analysis in DIANA.

    3) Upon completion of the analysis click "View Results" to load the output.


Model Performance

Below are some sample responses using UCSDSAND3 for seismic analysis.
Soil Model in DIANA
Shear Stress vs. Shear Strain

Usage of UCSDSAND3 and UCSDCLAY

For information on how to use the soil models UCSDSAND3 and UCSDCLAY in DIANA, please click here.