Author(s): N.K. Salgado & M.H. Aliabadi
This paper presents the application of the Dual Boundary Element Method
to the analysis of cracked stiffened panels.
Both continuously and discretely
attached stiffeners are considered.
Displacement compatibility between the
sheet and the stiffeners is imposed.
The variables of the problem are the
usual displacements and tractions at the boundary and the additional inter-
action forces acting at the internal attachment region.
After the solution of
the system of equations, the J-integral technique is used to determine the
stress intensity factors.
Several examples are presented, including the effect
of both broken and unbroken stiffeners on cracked panels.
Stiffened panels (i.e.
metal sheets reinforced by stringers), are freq...
Size: 596 kb
Paper DOI: 10.2495/BE940521
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