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www.beta-cae.comwww.beta-cae.com
Beam ModelingNew Developments
Kostas Skolarikis, Vasileios Evangelou
May 2019
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Beam Calculations in History
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Cross Section Tool
Integration of BETA in ANSA
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Cross Section Tool
Multicut
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Cross Section Tool
Beam optimization plugin
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Cross Section Tool as a library tool
CST
BETA
ANSA
ANSACST
ANSA
EPILYSIS
META
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Beams in Epilysis โ New developements
โข Tapered Beams
โข Torsional Warping
โข PBEAML , PBRSECT
Optimization
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Beams in Meta โ New developements
โข Rotation Animation
โข Stress Recovery
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Major Shortcomings of current Algorithms
โข Multimaterial
sections
โข Composite beams
โข Spot welded beams
โข Missing results
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New FE algorithm
Takes into account the cutโs underlying
mesh
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New FE algorithm
Influence of mesh size on calculated cross section properties
0
0.02
0.04
0.06
0.08
0.1
0.12
0 50 100 150 200 250
Pe
rce
nt
de
viat
ion
fro
m t
hin
se
ctio
n t
he
ory
Number of Nodes
It
Shear Center
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Beamโs warping dof
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Cross section warping modes
๐ ๐๐ฆ ๐๐ง๐๐ฅ ๐๐ฆ ๐๐ง
๐
๐ณ
๐ฑ
In-plane warping modes Out-of-plane warping modes
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RSECTBT - A new R-type element
RSECTBTRBE2
(Rigid Body Modes)
m
i
๐ข๐ฅ๐ = ๐ข๐ฅ
๐ + ๐1๐๐ฆ๐ + ๐2๐๐ง
๐ + ๐3๐ ๐ค๐
A new EPILYSIS element for beam to shell/solid connection
Rigid body motion Torsional warping
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RSECTBT
Connecting nodes are always placed on cross sectionโs plane
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RSECTBT - Verification
RBE3
RBE2
RSECTBT
+240%
-48%
-2%
+230%(+240%)
+230%(-48%)
-3%(-2%)
Testing RSECTBT against other R-type elements
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0
0.5
1
1.5
2
2.5
3
3.5
1
SHELLS
RBE2
RBE3
RSECTBT
0
10
20
30
40
50
60
1 2 3 4 5 6 7 8 9
Hz
Elastic mode
Normal modes
SHELLS
RBE2
RBE3
RSECTBT
RSECTBT - Verification
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Beyond 7th dof
Cross section warping modes of non-uniform beams
Dynamic warping modes
Torsional warping mode
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Superelements
Integrated solutions in ANSA and
META
โข Dynamic Reduction of Subsystems
โข Spot Welds representation
Latest developements
โข Full support in Epilysis
โข Script support
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Superelements in beam modeling
SE model FE model Beam model
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What is the future of beams in CAE ?
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Thank you
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