i need to do the simulation in radioss with very high speed impact, the simulating overall time is 500ns, and elements size is also 0.01um, how much of the time step? i run my model with these so small values, but it doen't work because i give the ov

meng2019
meng2019 Altair Community Member
edited October 2020 in Community Q&A

i need to do the simulation in radioss with very high speed impact, the simulating overall time is 500ns, and elements size is also 0.01um, how much of the time step? i run my model with these so small values, but it doen't work because i give the overall time step is too small. how i do in this case??

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  • Mr.Alb
    Mr.Alb New Altair Community Member
    edited February 2020

    I suggest you to modify this title and rename it with some shorter one. In Radioss, there isn't a unit system panel, so you have to put consistent units in all your model (mesh, material, property, timestep, cards ecc). With timestep you subdivide your analysis as frames for a video, so you have to know how much resolution you need. Can you share your engine and model files?

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