Civil Engineering Reference
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Fig. 7.8 Node temperature
versus time
180
160
140
120
100
80
60
40
20
0
0.5
1
1.5
2
2.5
3
x 10
-3
Riveting process time, sec
Fig. 7.9 Numerical (dashed
line) and experimental (solid
line)[
2
] residual tangential
stresses along the countersink
line
200
Experimental results
Numerical results
100
0
-100
-200
-300
-400
5
10
15
20
25
30
Distance from rivet, mm
The residual tangential and radial stresses (r
xx
, r
yy
) along the countersink line,
that were predicted from the nonlinear finite element model, were compared against
the experimental results of the physical prototype, as seen in Figs.
7.9
and
7.10
.
7.2.3 Test Case 2
The main objective from riveting simulation is to estimate total deformations on
panels and their fatigue life due to residual stresses induced during the assembly.
Panels size to be assembled determines the required number of rivets, which can be in
the range of hundreds. Manufacturing simulation of such number of rivets using
explicit finite element can be expensive. A surrogate model for estimating the
induced residual stresses due to the riveting process was created and compared
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