4. Model A results#

4.1. Natural frequencies#

MODE

Reference

Code_Aster

Relative Error **** (%) **

1

2.2507900E+00

2.25079079E+00

3.5E-05

2

3.1830000E+00

3.18309886E+00

0.003

4.2. Global response on a full modal basis#

Modes 1 and 2 are taken into account. The inertial and static components (response to DDS) of the response are directly accumulated at the level of the supports.

COMB_MODE =” SRSS “

  • support response \(j=1\) (node \(\mathrm{NO1}\)): \({R}_{1}=\sqrt{{\mathrm{Rm}}_{1}^{2}+{R}_{1}^{2}}\) with \({\mathrm{Rm}}_{1}=\sqrt{{\mathrm{Rm}}_{11}^{2}+{\mathrm{Rm}}_{21}^{2}}\)

  • support response \(j=2\) (node \(\mathrm{NO4}\)): \({R}_{2}=\sqrt{{\mathrm{Rm}}_{2}^{2}+{R}_{2}^{2}}\) with \({\mathrm{Rm}}_{2}=\sqrt{{\mathrm{Rm}}_{12}^{2}+{\mathrm{Rm}}_{22}^{2}}\)

  • global answer: \(R=\sqrt{{R}_{1}^{2}+{R}_{2}^{2}}\).

  • absolute movements: DEPL

NOEUD

Reference

Code_Aster

Relative Error **** (%) **

NO1

4.00000E-02

4.00000E-02

0.000

NO2

5.58000E-02

5.58083E-02

0.015

NO3

4.40000E-02

4.40000E-02

0.000

NO4

3.85600E-02

3.85683E-02

0.022

NO5

6.00000E-02

6.00000E-02

0.000

  • nodal reactions: REAC_NODA

NOEUD

Reference

Code_Aster

Relative Error **** (%) **

NO1

3.68000E+01

3.68044E+01

0.012

NO2

0.00000E+00

2.23756E-14

2.2E-14

2.2E-14

NO3

8.64900E+01

8.64906E+01

7.0E-04

NO4

0.00000E+00

3.071843E-14

3.1E-14

3.1E-14

NO5

7.71400E+01

7.71367E+01

-0.004