3. Modeling A

3.1. Characteristics of modeling

	Modeling TUYAU (SEG3) Breakdown for numerical integration Number of layers: 7 Number of layers: 7 Number of sectors: 7 Number of sectors: 18 Boundary conditions: Point \(A\): degree of freedom of beam \(\mathrm{DX}=\mathrm{DY}=\mathrm{DZ}=\mathrm{DRX}=\mathrm{DRY}=\mathrm{DRZ}=0\) degree of freedom of Hull: \(\mathrm{Ulm}=\mathrm{Vlm}=\mathrm{Wlm}=0(m=\mathrm{2,3})\) \(\mathrm{UOm}=\mathrm{VOm}=\mathrm{WOm}=0(m=\mathrm{2,3})\) \(\mathrm{Wl1}=\mathrm{WO1}=\mathrm{WO}=0\) Point \(D\): degree of shell freedom: \(\mathrm{Ulm}=\mathrm{Vlm}=\mathrm{Wlm}=0(m=\mathrm{2,3})\) \(\mathrm{UOm}=\mathrm{VOm}=\mathrm{WOm}=0(m=\mathrm{2,3})\) \(\mathrm{Wl1}=\mathrm{WO1}=\mathrm{WO}=0\)

3.2. Characteristics of the mesh

Number of knots: 45

Number of meshes and type: 22 SEG3

3.3. Tested sizes and results

\(\mathrm{DRZ}\)	Identification	Instants	Instants	Reference	Aster	\(\text{\%}\) difference
0.32	ETA_PILOTAGE	18	18	1.0	1.1699	16.99
0.34	ETA_PILOTAGE	18.5	18.5	1.0	1.1787	17.87
0.36	ETA_PILOTAGE	19	19	1.0	1.1869	18.69
0.38	ETA_PILOTAGE	19.5	19.5	1.0	1.1946	19.46
0.40	ETA_PILOTAGE	20	20	1.0	1.2020	20.20

We also test the volume distribution of component SIXY (non-regression tests) of fields SIEF_ELGA and SIGM_ELNO as well as the volume of the pipe.

3.4. notes

During step A, the internal pressure and the force due to the background effect are progressively imposed on the time interval \(0<t<10\). Then (step B), the bending moment is gradually imposed on the time interval \(10<t<20\). To solve, during step B, an increase in rotation \(\mathit{DRZ}\) by \(0.4\mathit{rad}\) is imposed on the solution obtained during step A.