Crushing Behaviour Of Woven Roving Laminated Conical Shells Using Slipping Solid Cones
This project examines experimentally the energy management during the slipping of solid steel cone into composite conical shell. Quasi-static crushing test was carried out with different low speed rate. The cone vertex angles used were 8,1 6, 24, 32 and 40 degrees. The cone height and bottom diam...
Saved in:
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English English |
| Published: |
2003
|
| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/12216/1/FK_2003_55.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | This project examines experimentally the energy management during the slipping of solid
steel cone into composite conical shell. Quasi-static crushing test was carried out with
different low speed rate. The cone vertex angles used were 8,1 6, 24, 32 and 40 degrees.
The cone height and bottom diameter were kept constant for all cases as 100 mm and
76.2 mm, respectively. Force-stroke curves and deformation histories of typical
specimens are presented and discussed.
Experimental results show that the cone vertex angle and loading condition affects the
load carrying capacity and the energy absorption capability of the conical shell. The
axially loaded conical shells between two platens have better load carrying capacity and
energy absorption capability compared to the conical shells subjected to slipping. The
tearing failure mode is longitudinal fibres and occurs near the contact area between the
solid steel cone and the conical shell wall (out-of-plane tearing mode). Furthermore, the structure subjected to plated test crushed at the small end in splaying failure-crushing
mode.
Based on experimental results obtained from this investigation, it could be concluded that
at first-crush stage the energy is dissipated in the form of friction and the conical shell
responded to slipping force in an elastic manner, while the post crush stage is dominated
by the tensile tearing failure foll owed by longitudinal and transverse shear cracking
failure.
The developed FORTRAN computer program approximately predicts the initial failure
load. The discrepancy between the analytical solution prediction and the experimental
results is due to the assumption made in FORTRAN computer program. |
|---|