ARDIENTE

MECHANICS
Secondly, the structural behaviour is analysed
when the load is applied from the lateral side. From
the table, it can be concluded that with this wind
load direction, the simplification into an arch is not
effective either, due to the difference of values
of bending moments and stresses. However, the
values of deflections from hand calculations are
close enough to FEA results. The assumption
of 5 mm thickness, in this case, is also enough
for resisting to breaking loads, but big deflection
appears as a consequence. So, further analysis
in Diana was needed, in which the thickness of
the material was increased step by step. Finally, a
calculation of 7,5 mm thickness seems to be the
most suitable one, with deformation of 1,9 mm,
which is acceptable.
W
A
FIGURE 82: BEAM DIAGRAM FOR STRESSES CALCULATION
B
H A N H C
R A
C
R C
δ max
B
W
A
C
FIGURE 81: BEAM DIAGRAM FOR DEFLECTION CALCULATION
FIGURE 83: BENDING MOMENT DIAGRAM
Side Wind Load
Results H. Calculations Diana Required
R A
-0.096 kN - 0.167 kN
R c
0.096 kN 0.167 kN
H A
0.5 kN 0 kN
H c
-0.5 kN 0 kN
N 0.143 kN 0 kN
M A
- 0.054 kNm - 0.051kNm
M B
- 0.009 kNm - 0.011 kNm
M c
0.071 kNm 0.043 kNm
M D
0.346 kNm (in L/3) 0.010 kNm
M D’
0.048 kNm
M E
- 0.262 (in L/3) - 0.033kNm
M E’
- 0.017kNm
σ max 83.03N/m 2 12.32 N/m 2 in A <310 N/m 2
δ max 5.8 mm 6.25 mm in middle of EE’ <2 mm
TABLE 14: CASE 2A RESULTS SIDE WIND LOAD
53