3. Modeling A#
3.1. Characteristics of modeling#
The shell is modeled by DKT elements. Its characteristics are defined in AFFE_CARA_ELEM:
thickness: \(16\times 0.28=4.48m\)
shell reference frame defined by ANGL_REP = 0.
The various layers are defined by the operator DEFI_COMPOSITE which gives for each layer its thickness, material and orientation with respect to the reference frame defined in AFFE_CARA_ELEM.
3.2. Characteristics of the mesh#
Number of knots:624
Number of meshes and types: 48 SEG2 and 576 QUA4
3.3. Tested sizes and results#
For the 0° diaper
Identification |
Reference type |
Reference |
% tolerance |
\({\sigma }_{\mathrm{xx}}\) |
|
-242 |
0.5 |
\({\sigma }_{\mathrm{yy}}\) |
|
67 |
0.6 |
For the 45° diaper
Identification |
Reference type |
Reference |
% difference |
\({\sigma }_{\mathrm{xx}}\) |
|
-108 |
0.5 |
\({\sigma }_{\mathrm{yy}}\) |
|
-67 |
0.6 |