Sample Application

System Analysis Example with ANSYS GUI and ANSeismic

In this example, I show how earthquake analysis is implemented from ANSYS GUI by using ANSeismic Files. If you have any questions or advices, plea se don’t hesitate to contact with me from the following email addresses. You can cite ANSeismic in your studies by using the following literature.

?ahin, A., “ANSeismic –A Simple Assistant Computer Program for Implementing Earthquake Analysis of Structure s with ANSYS and SAP2000”, The Ninth International Congress on Advances in Civil Engineering (ACE 2010), 27 to 30 September 2010, Trabzon, Turkey.

?ahin, A., “ANSeismic –Seismic Analysis of Structures with ANSYS and SAP2000”, MATLAB Central File Exchange:

https://www.360docs.net/doc/b712457520.html,/matlabcentral/fileexchange/27401

Best regards,

Abdurrahman Sahin

Associate Professor, Dr. of Eng.

Department of Civil Engineering

Y?ld?z Technical University

Istanbul/TURKEY

Web : https://www.360docs.net/doc/b712457520.html,.tr/abdsahin/en

Email : abdsahin@y?ld?https://www.360docs.net/doc/b712457520.html,.tr ; abdurrahmansahin@https://www.360docs.net/doc/b712457520.html,

1.Start ANSYS Product Launcher as shown in the following figure. Select the “Working Directory” and “Job Name” and then click “Run” button.

Click here

2. After that, the ANSYS window is opened as shown in the following figure.

3. Load your structural model into the ANSYS or create your own model as shown in the following figure.

4. Go to the following web address to download earthquake data

https://www.360docs.net/doc/b712457520.html,/

Click to NGA-West 2 link and the following page appears:

4.1. Select the related earthquake with your research and search the database :

5. Download the earthquake data from the following screen:

6. Start ANSeismic V2 Program and load the seismic file downloaded from peer as shown in the following figure.

7. After that, the acceleration record is loaded into the program as shown in the following figure. The start and finish time is selected to limit the analysis period. In this example, the total period is 30 s and it may be limited if preferred.

8. Click the “Produce ANSYS File” button to produce APDL seismic analysis codes as shown in the following figure.

9. After that, the following files are produced for seismic analysis of the system. The first file is APDL code for applying time history analysis and the second file is the seismic record file produced to be loaded into the system. Save these files into the “Working Directory” defined in the 1st step.

10. In ANSYS program, click “File” and “Read Input From…” in the main menu and then select the “seismic_analysis.txt” file in the new window as shown in the following figure. Then click ok and the seismic analysis starts now.

As shown in the following figure, the seismic analysis is implemented step by step.

11. When the analysis is ok, you can check the results by clicking “General Postproc”and “Results Viewer” in the ANSYS main menu. Then the following window is opened. You can choose a result option and check this in any time of the earthquake period.

By the way, “TimeHist Postpro”window may be used for further evaluation of earthquake analysis results.

12. It is also possible to run ANSYS model through ANSeismic in batch mode. For this operation, firstly, select the ANSYS log file as follows (Example file : FRAME_MODEL):

The example file FRAME_MODEL is as follows:

13. Click “Produce ANSYS Log”Button to combine Log File and seismic analysis codes.

14. Click “ANSYS Batch Run” to analyze the system from MATLAB in batch mode…