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Hyperman

tension only 1D element

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Hi,

 

how to set up tension only (no compression, bending and torsion) 1D element in Radioss?

I have tried with truss and spring elements. However, truss elements have axial compression stiffness and there is discrepancy in the plots, possibly because of geometric non-linearity.

reaction_force_compression.jpg

compression (truss in blue, spring in red color)

reaction_force_tension.jpg

tension

spring_truss.hm

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hello!

i haven't opened your model.

at first, i don't now about altair, but it doesn't recomend to use no tension/no compression to beam/truss elements in abaqus.

i'm looking for your model and will give some advice, but i'm just newbie in altair solvers.

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it's interesting, becouse i thought if i splite truss to 2 element i will have no compression force. i'm confuse, but it doesn't work in radioss...

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Hi Mrt,

 

thanks for your input.

 

My observation is if the force or displacement is applied coaxial to the truss/beam elements they will not buckle in compression, since FEA does not model material or geometry imperfections that would buckle the structure in reality.

 

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