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FIGURE 11.34
Geometry and load combinations.
FIGURE 11.35
Load factor
λ
versus displacement
U
2
.
to be the critical characteristic in the sense of the criterion of stability of Section 11.1.2, is
also given for the linear and the geometrically nonlinear analyses. The bifurcation level in
Fig. 11.35 is related to the value of 2.03, which is the first root of the condition det
K
0.
Higher roots can also be evaluated, and it is advisable to use the approach employing
analytical solutions or higher power series to obtain reliable results for the higher roots.
=
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