It is often a good idea to run stress relaxation or creep experiments in order to get enough data for a material model calibration. One common question, however, is for how long time you should run these relaxation or creep tests. It is quite expensive to run experimental tests that take hours to run, short-term tests would be nicer!
In this video I will show that it is actually sufficient to run shorter-term stress-relaxation and creep tests in order to calibrate a suitable material model.
0:00 Goals of the study
0:31 Experimental data
2:20 Calibrate TNV to cyclic tension only
3:52 Calibrate TNV to cyclic tension and some relaxation
6:25 Summary
