... evaluated. Pressure distribution on non-planar surface showed a significant difference and induced a higher ice load compared to a flat surface. pressure-area curve ice load contact area pressure pattern ice cone wedge indentor regression equation flat indentor wedge 10 indentor shape force...

... institute, Beijing, China ABSTRACT In order to study the ice force on jack-up structure which has cylindrical leg with gear teeth, a series of model tests are conducted to compare the ice forces on two cylindrical indentors of the same diameter, one of which has gear teeth on both sides scaled from...

... for such analyses as it can predict the site of failure as well as failure load. failure model load-deflection curve failure strain calibration procedure geometry experiment algorithm indentor plastic strain prediction shell element finite element model fe analysis ductile failure criterion...

... of the supports after impact. The test pipes were impacted at the mid-span by the indentor pipe. The support stands were fabricated from the same pipe material and section as the test pipe. All the drop tests were carried out using a half-pipe indentor (shown in Figure 3). The indentor was fabricated from...

... in a field test. strain gauge total ice load cleavage crack ice sheet strain area failure range strain area indentation test ice sheet indentation velocity compressive strength strain rate deformation ice load failure mode aspect ratio indentor ice thickness Proceedings...

... was controlled with the insulation sheet and room temperature. 800 mm wide rectangular indentor with segmented ice pressure panels in water line and ridge keel direction was used to measure the local pressure characteristics. The tests were perlbrmed varying the indentation velocity, compliance of the indentor...

... structures through utilizing results from ice tank experiments. non-simultaneous failure model structure numerical code experimental study contact area ice load foundation dependency ice sheet marine structure interaction velocity proc kamesaki equation indentor interaction structure...

... been established. strain rate deformation strain area ice load equation indentor ice force field indentation test indentation direction total ice force indentation rate ice sheet indentation test interaction structure interaction ice thickness ice sheet strain area strain gage...

... ABSTRACT This paper describes the relation between ice flaking characteristics and the modes of structure vibration due to ice structure interaction. We have attempted to analyze the ice crushing damage length in terms of indentation velocity and stiffness of the indentor using results...

... photograph the ice sheet displacement which occurred when the indentor entered the ice. Cameras were placed on the indentor support fi'ame given in Fig.l. Atter deformation of the ice sheet was photographed, the displacements in three directions-were obtained by the analytical plotter. For the three-axis...

... capable of simulating dynamic ice/structure response, local, global and foundation loads. As a first year test program, four vertical rectangular indentors and one cylindrical indentor were tested in small scale with setting model stiffness relatively high to attain stable nonsimultaneous failure modes...

... ABSTRACT Indentation contact and penetration of ice by a semicircular indentor is investigated computationally using the boundary element method (BEM). A series of BEM models is analyzed to show how the contact evolves from initial contact and penetration, up to the formation of macro cracks...

... on a series of laboratory tests where an indentor was pushed against a 100 mm thick sheet of freshwater Ice. The analysis of experimental data shows that the strain-softening feature of the loading phase can be represented using a polynomial of the third order. The nominal compressive strength seems...

... conducted to examine their effects on total ice force acting on the structure. The tests were conducted under the condition of aspect ratios between 11.4 and 15.4 dividing width of indentor by thickness of ice sheet, and comparisons were made with the test results of 2.4 to 2.7 (Takeuchi et al.,1992...

... focused on ice failure against indentors. Ridging has been the only mode of ice-ice interaction to receive considerable attention. Other modes of ice-ice interaction remain open questions. Recently, models of ice cover behaviour, at various length scales, have been increasingly utilizing a discrete...

... test dynamic ice structure interaction ice edge indentor ice face ice pressure ice sheet Proceedings of the First (1991) International Offshore and Polar Engineering Conference Edinburgh, United Kingdom, 11-16 August 1991 Copyright © 1991 by The International Society of Offshore and Polar...