How can I make a force vs displacement plot after running my simulation in HyperWorks using OptiStruct?

BryanN_22537

For context, I am trying to run a linear static simulation on a rectangular bar so that I can then use the results to make a force vs displacement graph of the entire bar. Specifically, I am trying to do a tensile test where one end has a boundary condition and another end has a pulling load. After successfully running the simulation, I open the .h3d file in HyperGraph and when it comes to trying to make the force vs displacement graph, I only get to plot the data for specific nodes instead of the entire part. How can I fix this? 

RobinsonFerrari

Hello,

You will only be able to plot force vs. displacement for a single node. However, you repeat the procedure to get more nodes. Another option should be leaving X: TYPE as TIME, and selecting all nodes as SPCF. In this case, you should apply a scale to the x-axis as the total displacement applied (in case you have applied force, scale the force applied).

You are seeing just two nodes in your picture because you are running a linear solution, which means you are not using an iterative/incremental procedure like non-linear static is. So, you need to manipulate your graphic by adding a first line in a table starting from 0,0 to the point plotted (in define>values). This curve, for sure, will be a straight line.

Please refer to the sessions below in the documentation for further information:

https://2023.help.altair.com/2023/hwdesktop/hwx/topics/hypergraph/define_curves_r.htm

https://2023.help.altair.com/2023/hwdesktop/hwx/topics/tutorials/hwx/hg_plot_charts_using_results_data_t.htm#hg_plot_charts_using_results_data_t

Thank you,