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1-20 of 42
Keywords: stress state
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Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-047
... be created in steel construction. In accordance with this objective, the authors identify the stress state in the bolt during installation through measurements. In addition, plastic deformations of the HV-bolts are quantified by 3D scans. Further experimental investigations evaluate the structural integrity...
Proceedings Papers
Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2158
... oil & gas anchor trajectory mohr-coulomb strength theory trajectory assumption analysis step aubeny stress state anchor reservoir simulation body force seabed model nonlinearity cel method deformation shear strength anchor model grid stress distribution installation euler body...
Proceedings Papers
Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2217
... point, cohesion, soil/caisson geometry and initial stress state (Ko). The friction contact interface and contact surfaces are the considered parameters for soil-caisson interaction. The variations in friction angle of soil along the Soil/Caisson surface are measured and present the rising effect...
Proceedings Papers
Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-614
... ABSTRACT The present paper addresses the stresses developing, inside the End-Fitting (EF), on the tensile armour wires of a metal based unbonded flexible pipe under axial tensile operational loads. To this end, a bidimensional finite element model that estimates the stress state of tensile...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-731
... uniaxial stress state stress intensity factor multiaxial stress state load level welding residual stress crack growth deformation stress concentration fatigue crack growth gusset model computation stress state characteristic tensor artificial intelligence residual stress initial...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-466
... scale tests at NSWC (Rodd, 1996) and TNO (Vredeveldt and Wevers, 1995) in the 1990s Denting tests (Muscat-Fenech and Atkins, 1998) More recent raking damage drop tests (Haag, 2017). stress state international journal calibration marine transportation failure strain dependency...
Proceedings Papers
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-572
... evolving stress state around the growing cracks. MULTI-AXIAL FRACTURE CRITERION The modified Mohr-Coulomb (MMC) fracture criterion (Bai and Wierzbicki, 2010) relies on the assumption that the fracture occurs when the state of stress on a fracture plane reaches a critical value. The state of stress...
Proceedings Papers
Tommaso Coppola, Andrea Fonzo, Flavia Campanelli, George E. Varelis, Giannoula Chatzopoulou, Spyros A. Karamanos
Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-479
.... Material modelling approaches are proposed to be applied in the numerical analysis. criteria loading condition accumulation asme bpvc viii-2 triaxiality stress state coppola criterion evolution asme bpvc asme bpvc section viii steel assessment cyclic loading condition offshore pipeline...
Proceedings Papers
Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-245
... and acceptable accuracy of the curvature determination. determination equation midstream oil & gas procedure application useful information compliance straight segment algorithm stress state pipeline calculation lokhman geometry differential equation elastic foundation displacement...
Proceedings Papers
Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-653
... pipelines to sustain large deformations, even under multi-axial loading. However, there are still open issues regarding the deformation and fracture performance of pipelines when subjected to different loading scenarios. fracture locus specimen experiment stress state reservoir characterization...
Proceedings Papers
Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-654
... of ductile and brittle failure especially for the newly developed high-strength linpipe steel grades, such as X100 material. The experimental database comprised e.g. tests on round notched bar specimens and fracture mechanics tests covering a wide range of stress states. beremin model steel...
Proceedings Papers
Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-271
... developed in 70's and 80's and they have been serving the community well for more than three decades. wierzbicki stress triaxiality upstream oil & gas history hydraulic fracturing simulation offshore pipeline fracture model thickness stress state platform triaxiality fracture...
Proceedings Papers
Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-222
... of concrete under dynamic loads and discussed factors that influence the dynamic compressive behavior of concrete, such as concrete quality, aggregate type, age, curing, and moisture conditions. stress state tensile strength strength dynamic strength test result experiment lateral stress level...
Proceedings Papers
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-647
... ABSTRACT The basic principle of using instrumented indentation technique (IIT) to measure residual stress is to convert residual stress state to the difference in indentation load between the residual-stress-free state and the residual-stressed-state at a fixed depth. Vickers indentation...
Proceedings Papers
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-650
... Nondestructive Mechanical Property Assessment Using Instrumented Indentation Testing Young-Cheon Kim, Kug-Hwan Kim and Dongil Kwon Department of Materials Science and Engineering, Seoul National University Seoul, Korea ABSTRACT The mechanical properties and stress states of materials...
Proceedings Papers
Zhiyong Pei, Yu Ji, Keiji Nakamaru, Satoyuki Tanaka, Shigenobu Okazawa, Masahiko Fujikubo, Tetsuya Yao
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-662
...-generalised strain relationships Applying the stress-strain relationship for plane stress state, the relationship between generalised stress increment, { N}, and generalised strain increments, is expressed as follows. (38) When all the cross-section is in an elastic state, [D] in Eq.(38) is expressed...
Proceedings Papers
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-595
... ABSTRACT A new kind of true tri-axial testing apparatus was used to carry out series of tests to study the stress-induced anisotropy of soils under complex stress state. The loads were applied from major principal and minor principal directions respectively to investigate the different stress...
Proceedings Papers
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-615
... pressure and the deviatonic stress " σ 1 – σ 3 " and " σ 2 – σ 3 ". Series of true triaxial tests on fine gravel were performed based on the new apparatus. The testing process was designed to simulate the real stress state of soils under complex stress state. In each team of tests, both the third...
Proceedings Papers
Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-009
... Experimental Study on Dynamic Shear Modulus of Saturated Sands under Complex Initial Stress States Danda Shi1, Ying Guo2, Maotian Luan2 and Jian Zhou3 1 College of Ocean Environment and Engineering Shanghai Maritime University Shanghai, China 2 School of Civil and Hydraulic Engineering Dalian...
Proceedings Papers
Paper presented at the The Nineteenth International Offshore and Polar Engineering Conference, July 21–26, 2009
Paper Number: ISOPE-I-09-544
... technique (IIT) is introduced by which tensile properties and residual stress are evaluated nondestructively by continuously measuring indentation load and depth. specimen procedure metallic material wellbore integrity assessment stress state lee application representative stress reservoir...
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