By default, when setting up an envelope on a d3plot result file, you may observe that the displacements plotted in the envelope correspond to the displacements at t=0.

In order t plot correctly dsiplacements from an envelope, you need, before loading your result file, to click on the Reader Options icon in the import panel, and to change in the LS-Dyna d3plot reader the option below:

Then, you can load your d3plot and you'll get the expected results from the envelope.

Please note this affects only displacements.

Best Regards,

Michael Herve