December 2, 2019 at 10:46 pmAetasSubscriber
I am trying to make a macro for an evaluation of deformation on cantiliver beam, which has an I profile and is loaded with torque moment. I am tasked to use shell elements. However when I use them, total deformation of this beam is something about 1.3 meters, while the beam is only one meter long. So it is totally off. It seems to me that geometry and mesh is correct and I can't find error in definition of constraints (in cantiliver end there is no displacement and rotation) and loads should be correct as well.
When I used beam elements I've come to total deformation of 7e-4 mm.
Can anyone help me please?
Thank you in advance.
!Example: Optimalization of beam parameters
!Definition of model parameters [dimensions unit: mm]
H = 20
t = 2
L = 1000
Mk = 1e6 ![N*mm]
!Definition of material
!Definition of elements
!Definition of thickness
!Definition of geometry
BLOCK,-H/4,0,0,L,-H/2,H/2 !Left half of beam
BLOCK,0,H/4,0,L,-H/2,H/2 !Right half of beam
!Adding middle part together
!Set element size of cross-section to value of 1 mm
LESIZE,_Y,0.5, , , , , , ,1
!Set element size of beam to value of 5mm
LESIZE,_Y1,5, , , , , , ,1
!Creating mapped mesh
!Definition of constrains and loads
!solution of linear structural problem
December 5, 2019 at 1:44 pmAniketAnsys Employee
Is there any specific reason for using Shell elements instead of Beam elements? Let us know!
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