Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 120-128 |
| Journal | Cold Regions Science and Technology |
| Volume | 67 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2011 |
| MoE publication type | A1 Journal article-refereed |
Fingerprint
Keywords
- ice crushing
- pressure distribution
- reinforced plating
- near full-scale tests
- line like contact
- tactile sensor
Cite this
}
Ice crushing tests with variable structural flexibility. / Määttänen, Mauri (Corresponding Author); Marjavaara, Pieti; Saarinen, Sami; Laakso, Matti.
In: Cold Regions Science and Technology, Vol. 67, No. 3, 2011, p. 120-128.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Ice crushing tests with variable structural flexibility
AU - Määttänen, Mauri
AU - Marjavaara, Pieti
AU - Saarinen, Sami
AU - Laakso, Matti
PY - 2011
Y1 - 2011
N2 - To learn more on ice crushing phenomena against a compliant stiffened plate structure, near full-scale ice crushing tests were conducted in Aker Arctic test basin with a 1:3 scaled model. The dimensions of the to be crushed ice sheet and the stiffened plate were chosen to present a full size ship or offshore structure steel plating which are designed to withstand the crushing loads of 60 cm thick level ice. A major difference to the crushing tests published earlier in literature was that the compliance of one stiffener could be adjusted. The instrumentation in the plate included both strain gauges for load paths from the plate to the stiffeners and a large tactile sensor for detailed direct crushing pressure distribution measurement. In order to have repeatable and homogeneous model ice properties the ice blocks were manufactured by snow ice technique with low salinity water impregnation under vacuum in the mould. Altogether 22 ice blocks were crushed with different ice velocities and plate compliancy. The well-known line like contact prevailed in continuous crushing. The test data indicates that the crushing load distribution is independent from the underlying plate stiffness distribution and no higher crushing pressure at the location of stiffeners was found.
AB - To learn more on ice crushing phenomena against a compliant stiffened plate structure, near full-scale ice crushing tests were conducted in Aker Arctic test basin with a 1:3 scaled model. The dimensions of the to be crushed ice sheet and the stiffened plate were chosen to present a full size ship or offshore structure steel plating which are designed to withstand the crushing loads of 60 cm thick level ice. A major difference to the crushing tests published earlier in literature was that the compliance of one stiffener could be adjusted. The instrumentation in the plate included both strain gauges for load paths from the plate to the stiffeners and a large tactile sensor for detailed direct crushing pressure distribution measurement. In order to have repeatable and homogeneous model ice properties the ice blocks were manufactured by snow ice technique with low salinity water impregnation under vacuum in the mould. Altogether 22 ice blocks were crushed with different ice velocities and plate compliancy. The well-known line like contact prevailed in continuous crushing. The test data indicates that the crushing load distribution is independent from the underlying plate stiffness distribution and no higher crushing pressure at the location of stiffeners was found.
KW - ice crushing
KW - pressure distribution
KW - reinforced plating
KW - near full-scale tests
KW - line like contact
KW - tactile sensor
U2 - 10.1016/j.coldregions.2011.03.004
DO - 10.1016/j.coldregions.2011.03.004
M3 - Article
VL - 67
SP - 120
EP - 128
JO - Cold Regions Science and Technology
JF - Cold Regions Science and Technology
SN - 0165-232X
IS - 3
ER -