Short loading time over long simulation time

  • Last Post 29 November 2019
SimonShi93 posted this 29 November 2019

Hey everybody,

i am currently trying to investigate the thermal behavior of the real contact area during tribological loading using Workbench. As i am a novice in regard to simulating, I have a quick question regarding the loading and time step adjustments of my simulation.

We need multiple thermal loads across the surface designated to area sections that last about 1e-5s and that "fire off" multiple times within a second. Thats why the first approach is to create 1/1e-5 amounts of step and apply the loads onto the steps. However even one second requires 100.000 steps. Is there a better approach that would allow us to run the simulation and potentially simulating a time of 10-20 min?

I would appreciate any help or tipps.


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peteroznewman posted this 29 November 2019

Why not just apply a low and constant thermal load to the area that has an equivalent amount of heat as the individual short pulses that occur multiple times a second?

SimonShi93 posted this 29 November 2019

Hey Peter,

first of all thanks so much for the quick response. The goal was to investigate the thermal behavior of the asperities (heights of 0,004mm). Because the heat is transported incredibly quick into the bulk of the material, the "realistic" pulsing and resulting distribution of heat due to the friction between asperties is actually very interesting to analyse. Although with your suggested method, the thermal behavior in the bulk of the material might behave similarly i assume that surface near behavior differs quite a bit.