Learning Forum

[Reno Genest]

Hello Javat,

For thermal loading fatigue, a solution in time domain is required (*FATIGUE and *MAT_ADD_FATIGUE). There is more information in the LS-DYNA User Manual:

"*MAT_ADD_FATIGUE is applicable to frequency domain fatigue analysis,
defined by the keywords: *FREQUENCY_DOMAIN_RANDOM_VIBRATION_
FATIGUE and *FREQUENCY_DOMAIN_SSD_FATIGUE. It also applies
to time domain fatigue analysis, defined by the keyword *FATIGUE (see these
keywords for further details)."

Try to load the structure with *LOAD_THERMAL_LOAD_CURVE and use *MAT_ELASTIC_PLASTIC_THERMAL as your material model.

 

Let me know how it goes.

 

Reno.