axial load in column

Tamana Shamsi

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Oct 31, 2023, 9:09:14 AM10/31/23

to LS-DYNA2

hi everyone,

i am new in ls dyna and i am trying to simulate RC column subjected to impact load. i develop my model but i cant define the axial load in column. please help mi to define axial load in RC column

l...@schwer.net

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Oct 31, 2023, 9:56:37 AM10/31/23

to Tamana Shamsi, LS-DYNA2

Do you mean an initial axial stress in the column before impact? --len

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Tamana Shamsi

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Oct 31, 2023, 9:57:59 AM10/31/23

to L...@schwer.net, LS-DYNA2

Yes!

l...@schwer.net

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Oct 31, 2023, 10:56:12 AM10/31/23

to Tamana Shamsi, LS-DYNA2

The simplest methods is to apply the axial load via *LOAD_NODE or *LOAD_SEGMENT as a ramp in time and allow some time for the loading to approach equilibrium before the impact.

Have a look at the keyword *CONTROL_DYNAMIC_RELAXATION. This will allow you to apply a preload before the impact with a convergence criterion.

--len

Tamana Shamsi

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Oct 31, 2023, 10:58:33 AM10/31/23

to L...@schwer.net, LS-DYNA2

Thank you so much for the info!

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