Abstract
In this study a tool for assessing residual strength of debond damaged
laterally loaded sandwich panels is developed. The analysis tool consists of
a parametric finite element model and a fracture mechanics calculation
procedure to determine the residual strength. The parametric approach allows
variation of all geometric and material entities. The fracture mechanics
calculation uses crack flank displacements obtained from the finite element
analysis solution and experimentally measured mixed-mode fracture toughness
values to determine the ultimate failure load. The analysis tool is validated
with a number of different ship type panels. Debond criticality is evaluated
by using the developed tool and by comparing the test results from panel
experiments. The comparison shows that the analysis tool predicts both
failure load and failure mode well. The tool can be used to determine the
residual strength of different damage cases and has a considerable potential
for further development.
Original language | English |
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Pages (from-to) | 167-196 |
Journal | Journal of Sandwich Structures and Materials |
Volume | 9 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2007 |
MoE publication type | A1 Journal article-refereed |
Keywords
- debond
- interface
- foam core
- damage tolerance
- residual strength
- sandwich panels
- pressure loads
- marine structures