Stepby Step Open SEESon NEESHub
Introduction
We can use the NEESHub to run our OpenSEES projects, in the same way we do it in our Personal Computer. We can use the command line to input line by line our project, or we can upload a source file. This short tutorial is for users that know how to use OpenSEES and would like to know how to run OpenSEES models on the NEEShub.
Opening the OpenSEES tool
First at all, we need to launch this tool. To do it, we need to have an account at the NEESHub ((https://nees.org/register). Look for the Simulation tab at the top of the page, and select the option Programs.
We can find now several options available at the NEESHub for simulation, depending on what we need to model. To use OPENSEES, just click at the link OPENSEES LABORATORY.
At the About page, you can click on the Launch Tool button to start OPENSEES
Submitting a job to OpenSEES
As we may be used to, we can input our project at the command line of the OPENSEES application. But it can be more useful to input a source file. This can be done by selecting the File Transfer option in the Pop-menu of the OPENSEES LABORATORY:
Once there, we just select the option Upload, and then we browse our PC for our project source file. Once uploaded, we use the Pop-menu to go to the OPENSEES INTERPRETER.
There you go! Now you can use OPENSEES as you would in your local PC. For example we can type the command dir, there we will be able to locate the file we just uploaded. We can run it by typing source filename, where filename refers to our source file.
We can use the OPENSEES INTERPRETER as we usually do in our PC. For example, we can use the command eigen to get eigenvalues of the model, and use the proper operations (valid TCL operations) to convert the eigenvalues into natural frequencies:
Returning to OpenSEES after first use
After we have used for the first time the OPENSEES tool, we can load it again from the MyNEEShub home (link at the top right), under the My Tools tab, and any session open under the tab My Sessions:
