4. B modeling#

4.1. Characteristics of B modeling#

Same as modeling A, but treating geometric nonlinearities with the keyword COMPORTEMENT option PETIT_REAC.

Identification	Reference	Aster	% difference

Arrow \(\mathrm{w0}\) \((\mathrm{mm})\)	—1.441838E—3	—1.3692E—3	—5.036
SIXX \((\mathrm{MPa})\) center, half—thickness	3850.9	4219.3	9.568
SIYY \((\mathrm{MPa})\) center, half—thickness	3850.9	4219.4	9.569
SIXX \((\mathrm{MPa})\) center, lower skin	8133.6	7950.5	—2.251
SIYY \((\mathrm{MPa})\) center, lower skin	8133.6	7950.5	—2.252
SIXX \((\mathrm{MPa})\) \(r=R/2\), half—thickness	3512.8	3838.4	9.268
SIYY \((\mathrm{MPa})\) \(r=R/2\), half—thickness	2947.5	3314.2	12.440
SIXX \((\mathrm{MPa})\) \(r=R/2\), lower skin	7815.7	7593.9	—2.839
SIYY \((\mathrm{MPa})\) \(r=R/2\), lower skin	7307.0	7123.7	—2.509

There is a significant gap between the reference solution and the solution provided by*Code_Aster*.

It is verified that this difference tends to 0 when the number of increments is increased.