1. Reference problem

1.1. Loading

The load is shown in the following figure:

Figure 1.1-1

The AB beam has a total length of 8m. AC, CD, CE, EF and EB bars only work in tension and compression. In the middle of the CE bar, a device allows a shortening between two points C and E, which is translated by an elongation of the left and right parts of the CE bar by \(\mathrm{\delta }\) = 6.52mm. The support in A is fixed while the support in B is mobile.

1.2. Liaisons

• Supports A (DX=DY=DZ=0, KRX = = KRY = KRZ =0.0001 N.m/rad)

• Supports B (KY = 1 x 109 N/m)

1.3. Geometry

• AB beam

Characteristics	Value	Unit
Area	15 160	mm²
Shear coefficient	2.5	[-]
Inertia	217.4*106	mm4

Table 1.3-1

• Bar SAC, CE, EB

Characteristics	Value	Unit
Area	4,500	mm²

Table 1.3-2

• CD and EF beam

Characteristics	Value	Unit
Area	3480	mm²

Table 1.3-3

1.4. Material properties

Characteristics	Value	Unit
Young’s module	210,000	MPa
Poisson’s ratio	0.25	[-]

Table 1.4-1

1.5. Bibliographical references

1. VPCS: Guide to the validation of structural calculation software packages: « test SSLL13 /89 », SFM, AFNOR technique.