1. Reference problem

1.1. Loading

The mobile load with an intensity Fy = -48,000 N moves at a speed of 10 m/s for 1 s. The damping in question is zero.

For modeling in code-aster, the load will be modeled by a nodal force at a node on the \({x}_{i}\) axis whose maximum value (value at time t2) is calculated from the zone of influence. The nodal force is varied as a function of time as follows:

Figure 1.1-1

In code-aster, the maximum values and the peak time associated with each node are shown in the following figure:

Figure 1.1-2

1.2. Liaisons

• Support PT_5 (DY=DZ= DRX = = DRY =0; KX = 100 N/m and KRZ = 0.1 N.m/rad)

• Support PT_100 (DX=DY=DZ= DRX = = DRY =0; KRZ = 0.1 N.m/rad)

1.3. Geometry

Characteristics	Value	Unit
Inertia	5*106	Mm4
Area	12,500	mm²
Shear coefficient	0.8497	[-]

Table 1.3-1

1.4. Material properties

Characteristics	Value	Unit
Young’s module	210,000	MPa
Poisson’s ratio	0.30	[-]
Density	8,000	kg/m3

Table 1.4-1

1.5. Bibliographical references

1. VPCS: Guide to the validation of structural calculation software packages: « test SDLL07 -89 », SFM, AFNOR technique.