16. N modeling#

16.1. Characteristics of modeling#

We use 3D modeling in non-linear mechanics with hyper-reduction of the model and finite element correction (option CORR_COMPLET).

16.2. Characteristics of the mesh#

The mesh contains 216 elements of type HEXA8.

16.3. Tested sizes and results#

16.3.1. With CORR_COMPLET#

We test the value of the movements obtained with a hyper-reduced model (with correction) by compared to those obtained in the complete model:

Location	Moment	Component	Movement ( DEPL )	Instant	Precision
Knot in \(({0.5,3,2.5})\)	\(t=10s\)	DX	\({0,497612858925}\,{mm}\)	0.0055
Knot in \(({0.5,3,2.5})\)	\(t=10s\)	DY	\(-{0,736173981172}\,{mm}\)	0.0055
Knot in \(({0.5,3,2.5})\)	\(t=10s\)	DZ	\({1,5401647755}\,{mm}\)	0.0055
Knot in \(({3,2,1})\)	\(t=10s\)	DX	\(-{0,412778695928}\,{mm}\)	0.005
Knot in \(({3,2,1})\)	\(t=10s\)	DY	\(-{0,149415897318}\,{mm}\)	0.007
Knot in \(({3,2,1})\)	\(t=10s\)	DZ	\({0,306532333698}\,{mm}\)	0.006

And the constraints:

Location	Instant	Component	Constraint ( SIEF_NOEU )	Precision
Knot in \(({2.5,0,2.5})\)	\(t=10s\)	SIXX		\(-2526.26537982\,{MPa}\)	0.0022
Knot in \(({2.5,0,2.5})\)	\(t=10s\)	SIYY		\(-2524.79824979\,{MPa}\)	0.0021
Knot in \(({2.5,0,2.5})\)	\(t=10s\)	SIZZ		\(-2327.65322131\,{MPa}\)	0.0043
Knot in \(({1.5,2.5,1})\)	\(t=10s\)	SIXX		\(-2607.04528612\,{MPa}\)	0.0015
Knot in \(({1.5,2.5,1})\)	\(t=10s\)	SIYY		\(-2606.7177583\,{MPa}\)	0.0013
Knot in \(({1.5,2.5,1})\)	\(t=10s\)	SIZZ		\(-2455.1448814\,{MPa}\)	0.0013

16.3.2. Without CORR_COMPLET#

We test the value of the movements obtained with a hyper-reduced model (without correction) by compared to those obtained in the complete model:

Location	Moment	Component	Movement ( DEPL )	Instant	Precision
Knot in \(({3,2,1})\)	\(t=10s\)	DX	\(-{0,412778695928}\,{mm}\)	0.005
Knot in \(({3,2,1})\)	\(t=10s\)	DY	\(-{0,149415897318}\,{mm}\)	0.007
Knot in \(({3,2,1})\)	\(t=10s\)	DZ	\({0,306532333698}\,{mm}\)	0.006

And the constraints:

Location	Instant	Component	Constraint ( SIEF_NOEU )	Precision
Knot in \(({1.5,2}{.5,1})\)	\(t=10s\)	SIXX		\(-2607.04528612\,{MPa}\)	0.0015
Knot in \(({1.5,2}{.5,1})\)	\(t=10s\)	SIYY		\(-2606.7177583\,{MPa}\)	0.0014
Knot in \(({1.5,2}{.5,1})\)	\(t=10s\)	SIZZ		\(-2455.1448814\,{MPa}\)	0, 014

16.4. notes#

We can see that the calculation with CORR_COMPLET is a bit better on the evaluation of constraints, but it’s still not significant about travel.