4. Verification - Execution#

4.1. For the keyword factor CHOC#

The value of INST_FIN is compared to the final instant \({t}_{f}\) of the tran_gene result. The value of INST_FIN selected is \(\mathrm{min}({t}_{f},{t}_{1})\).

If the value of INST_INIT \({t}_{0}\) is greater than the value of INST_FIN, we stop in error.

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4.1.1. Execution with option “IMPACT”#

For each shock nonlinearity, the following are calculated and archived in the result table:

  • the shocks and associated magnitudes:

for each shock, we have the value of the moment when the force is maximum, the value of the maximum force and the impulse, the duration of the shock, the speed of impact and the number of rebounds,

  • global shock data:

on all the shocks observed, we specify: the absolute maximum shock force, the average value of the maximum shock forces and the standard deviation of the extreme shock forces,

  • the histogram describing the maximum impact forces:

We have the number of classes in the histogram, the values of its abscissa (min and max force of each class) and the probability density of the maximum force of each class.

4.1.2. Executing with the “USURE” option#

For each shock nonlinearity, the following are calculated and archived in the result table:

  • the mean values min, max, standard deviation, RMS, of the relative movements of the shock nodes in their global coordinate system,

  • the average values and RMS (on the shock time and total time) as well as min and max of the normal and tangential shock forces,

  • the number of average shocks on each shock link, the average shock time, the average rebound time,

  • the average wear power calculated in the sense of ARCHARD [bib1]:

\({P}_{\text{usure}}=\frac{1}{T}\mathrm{.}{\int }_{0}^{T}{F}_{N}(t)\text{.}{V}_{T}(t)\mathrm{.}\text{dt}\)

4.2. For the keyword factor RELA_EFFO_DEPL#

We check that the node node corresponds to a non-linear relationship.

Print using the IMPR_TABLE command:

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ASTER 4.03.15 CONCEPT TABLE CALCULE ON 03/02/98 AT 12:08:19 FROM TYPE

TABLE_SDASTER

RELATION NOEUD CMP PHASE INST_INIT INST_FIN MAXI INST_MAXI

NON_LIN N100 DRY 1 1.24000E+00 1.26600E+00 1.80716E-05 1.25200E+00

NON_LIN N100 DRY 2 2.02600E+00 2.09000E+00 -2.00433E-05 2.05800E+00

NON_LIN N100 DRY 3 3.00000E+00 3.04000E+00 -1.89110E-05 3.02200E+00

NON_LIN N100 DRY 4 3.10400E+00 3.20400E+00 3.50715E-05 3.15400E+00

NON_LIN N100 DRY 5 3.26000E+00 3.33600E+00 -2.91359E-05 3.30000E+00

NON_LIN N100 DRY 6 3.41400E+00 3.43200E+00 1.73099E-05 3.42400E+00

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