3. Operands common to all options#

3.1. Operand TYPE_RESU#

TYPE_RESU =/'DETAILS',
              /'VALE_MAX',
              /'SYSTUS'

Type of values contained in the resulting table:

  • DETAILS: the values calculated at each moment are provided.

  • SYSTUS: the values calculated for each situation or combination of situations involved in the use factor are provided. This option is only available for TYPE_RESU_MECA = B3200, ZE200a, or ZE200b

  • VALE_MAX: only the maximum values are given, but these maxima are not necessarily reached at the same time of calculation.

3.2. Operand TITRE#

♦ TITRE = title

Character string describing the title of the value table created, which appears when this table is printed by IMPR_TABLE [U4.91.03].

3.3. Operand INFO#

♦ INFO =/1
                  /2

Allows a more or less detailed display in the message file.

3.4. Result types: keyword TYPE_RESU_MECA#

Five types of post-treatments are available in POST_RCCM: these post-treatments follow the rules in various paragraphs of RCC -M: B3600, B3200, ZE200.

Results of type RCC -M**B3600 for pipeworks : “B3600”

With option FATIGUE, this type of result is dedicated to the post-processing of mechanical calculations (MECA_STATIQUE, STAT_NON_LINE, COMB_SISM_MODAL) on a pipe line. The fatigue calculation is done according to the rules of paragraph B3600.

Multiple situations can be defined, but within a single group. Earthquake situations can be taken into account.

With option MOMENT_EQUIVALENT, this type of result is dedicated to the post-processing of mechanical calculations (MECA_STATIQUE, STAT_NON_LINE, DYNA_VIBRA, DYNA_NON_LINE) on a pipe line. This option allows the calculation of the maximum equivalent moments on the line. According to the formula in paragraph B3600:

\(MEQ=\sqrt{({MT}^{2}+{MFY}^{2}+{MFZ}^{2})}\)

The product table contains the time maximums of the MT components, MFY, MFZ, and MEQ as well as the value of the curvilinear abscissa of the node in question.

Results of type RCC -M**B3200 **: * “EVOLUTION” and “B3200”

“EVOLUTION” is dedicated to the post-processing of one or more thermo-mechanical calculations (MECA_STATIQUE, STAT_NON_LINE) on 2D or 3D modeling. The results are transmitted via constraint tables, extracted on the analysis segment (s). The accessible criteria are:

  • for current areas (excluding geometric singularity): the criteria of level 0 (option PM_PB), level A excluding fatigue (option SN) and fatigue (option FATIGUE_ZH210) criteria on segments;

  • for geometric singularities: calculation of the priming factor (option AMORCAGE) on a circular cut line around the singularity.

This option is well suited for cases where there are few situations to study or cases where it is necessary to determine the priming factor.

On the other hand, “B3200” is well suited to calculations on a component subject to numerous situations, possibly divided into several operating groups. An earthquake can be taken into account, as well as situations of passage and sharing groups. Environmental fatigue resistance can also be evaluated with this option.

Loads can be entered in several forms.

This type of result may therefore require prior calculation:

  • of the constraints related to the thermal transients under consideration, which must be extracted on the analysis segment (RESU_THER),

  • of the constraints related to pressure loads: in the form of a transient (RESU_PRES) or in the form of a unit load with two pressures for the stabilized states (RESU_MECA_UNIT, PRES_A and PRES_B),

  • constraints related to loads due to efforts and moments:

    • in transient form (RESU_MECA)

    for unit loads (global unit forces and moments applied to the limits of the model) with two torsors for the stabilized states (CHAR_ETAT_A and CHAR_ETAT_B). These efforts can either be calculated with c*ode_aster, or from the OAR database,

    • for unit loads to which a twister is applied, this torsor is calculated by the interpolation between two torsors (CHAR_ETAT_A and CHAR_ETAT_B) which correspond to the temperatures TEMP_A, and TEMP_B and thanks to the temperature during the situation TABL_TEMP.

The accessible criteria are the criteria of level 0 (option PM_PB), level A excluding fatigue (option SN), fatigue (option FATIGUE) and environmental fatigue (option EFAT) criteria on segments.

Results of type RCC -M ZE200 * : “ZE200a” and” ZE200b “

RCC -M’s ZE200 method is a mixed method that combines B3200 and B3600. This type of result is therefore dedicated to the post-processing of mechanical calculations on a pipe line according to the B3600 combined with thermal transients for “ZE200a”. The “ZE200b” method also treats stresses due to pressure in the form of transients.

These options are well suited to calculations on pipes subject to numerous situations, possibly divided into several operating groups. An earthquake can be taken into account, as well as situations of passage and sharing groups. Environmental fatigue resistance can also be evaluated with this option.

3.5. Table produced#

The POST_RCCM command generates a table-like concept. The IMPR_TABLE [U4.91.03] command allows you to print the contents of the table. For more information, you can refer to the document [U2.09.03].

3.6. Operand AXIS#

◊ AXIS =/'NON' [DEFAUT]
                /'OUI'

Indicator for declaring the axisymmetry of the modeling. For TYPE_RESU_MECA =” EVOLUTION “, if this operand takes the value” OUI “, the calculation of the equivalent membrane stresses Pm and flexure Pb will be performed by an algorithm specially designed for axisymmetric models. Given the inhomogeneous distribution of mass in the radial direction, this algorithm introduces a corrective displacement of the mean line into the stress linearization formulation. For the other values of TYPE_RESU_MECA, if this operand takes the value “OUI”, the calculation will stop with an error message because no specific processing has been implemented.