Model Experimental Research of Ship Section on Structural Ultimate Strength

2020 ◽  
Author(s):  
Chen Xianyin ◽  
Zeng Wenyuan ◽  
Li Cong ◽  
Wang Wei
Keyword(s):  
Bearing Capacity ◽  
Ultimate Strength ◽  
Ultimate Bearing Capacity ◽  
Ship Hull ◽  
Structural Safety ◽  
Hull Structure ◽  
Similarity Model ◽  
Large Ship ◽  
Section Structure ◽  
Classification Society

Abstract Focusing on the model design and experimental method research of ultimate strength of ship hull typical section, a large ship with complex section structure was taken in this paper as the research object. The nonlinear analysis on the failure mode and ultimate strength of the hull structure were carried out. The similarity model for ultimate strength experiment was designed, and the validity of the similarity model in reflecting the ultimate bearing capacity of the real ship was verified. According to the experimental results, the ultimate strength experimental value was obtained by numerical conversion. The ultimate bearing capacity of the example ship was then checked with reference to several classification society rules to verify the structural safety of the ship hull.

The Influence Research of Ultimate Strength to Deepwater Semi-Submersible Platforms Structure Under Corrosion Damage

2012 ◽  
Author(s):  
Jian Zhang ◽  
Zhongxiang Shen ◽  
Chunyan Ji ◽  
Qun Yin
Keyword(s):  
Bearing Capacity ◽  
Ultimate Strength ◽  
Failure Modes ◽  
Evaluation Process ◽  
Corrosion Damage ◽  
Ultimate Bearing Capacity ◽  
Structural Safety ◽  
Important Indicator ◽  
Parameterized Model ◽  
Typical Component

Ultimate strength is an important indicator of the adaptability to changing environment of semi-submersible platforms. As corrosion damage has significant effects on the ultimate strength, the corrosion damage factor should be taken into account in the platforms structural safety evaluation process. The basic theories and researching methods of ultimate strength are expounded and the corrosion forecasting mathematical model is established in this paper. Taking 3000m deep sea semi-submersible platforms as research objects, the parameterized model of typical component and node is established by taking corrosion thickness as variable using the finite component software. Based on the gradual damage calculation method and finite component analysis method, the load is increased progressively according to proportion increment theory. The ultimate bearing capacity of typical component and node is calculated under the corrosion damage. The ultimate bearing capacity evolution law of typical component and node under various failure modes and various service years is summarized.

Encased-Steel-Reinforced Concrete Composite Beam and its Ultimate Strength Analysis

2013 ◽  
Vol 351-352 ◽  
pp. 722-725
Author(s):  
Yuan Suo ◽  
Xiao Dong Li ◽  
Wei Ning Yuan
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Ultimate Strength ◽  
Composite Beam ◽  
Ultimate Bearing Capacity ◽  
Strength Analysis ◽  
Steel Reinforced Concrete

Compared with traditional steel-concrete composite beam,authors describe a new composite beamencased-steel-reinforced concrete composite beam , introduce the advantages of this new composite beam,and establish the formula of ultimate bearing capacity.

Evaluation of Cumulative Collapse of a LNG Carrier Hull Girder Under Dynamic Cyclic Bending Moments

2021 ◽  
Author(s):  
Jian Ji ◽  
Bin Liu ◽  
Lin Chen ◽  
Xianting Liao ◽  
C. Guedes Soares
Keyword(s):  
Finite Element ◽  
Ultimate Strength ◽  
Failure Modes ◽  
Ship Hull ◽  
Bending Moments ◽  
Nonlinear Finite Element Method ◽  
Cyclic Bending ◽  
Hull Girder ◽  
Hull Structure ◽  
The Difference

Abstract The present paper continues the recent work reported by Liu and Guedes Soares [1] where finite element simulations were conducted to investigate the ultimate strength of a container ship hull girder under cyclic bending moments. Here a membrane LNG carrier is investigated to evaluate the “cyclic ultimate strength” of this specialized ship hull structure including double bottoms, sides and decks. The paper aims to analyze the ultimate strength and to compare the collapse modes of a LNG carrier hull girder under monotonic and dynamic cyclic bending moments, revealing the difference in their failure modes. Nonlinear finite element method is employed, using the explicit LS-DYNA solver, to analyze the ultimate strength of hull structures. The numerical results show that the cyclic ultimate strength of hull structures is about 20% lower than the monotonic ultimate strength in the present study.

scholarly journals Study on the ultimate bearing capacity of a strip footing influenced by an irregular underlying cavity in karst areas

2021 ◽  
Author(s):  
Lianheng Zhao ◽  
Shan Huang ◽  
Zhonglin Zeng ◽  
Rui Zhang ◽  
Gaopeng Tang ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Strip Footing ◽  
Karst Areas

Experimental Investigation for Horizontal Ultimate Bearing Capacity and Target Ductility Factor Improvement Results of the RC Column Reinforced by AFL with Damages

2014 ◽  
Vol 488-489 ◽  
pp. 497-500
Author(s):  
You Lin Zou ◽  
Pei Yan Huang
Keyword(s):  
Bearing Capacity ◽  
Ultimate Bearing Capacity ◽  
Test Results ◽  
Rc Columns ◽  
Static Test ◽  
Rc Column ◽  
Ductility Factor ◽  
Secant Stiffness ◽  
Function Relationship ◽  
Reversed Cyclic

Deem test results from the low reversed cyclic loading quasi-static test with 2 RC columns as the basic information of secant stiffness damage of the reference column and take use of the TMS instrument in the test to artificially make the damage percentage of secant stiffness of the RC column as 33%, 50% and 66%, 6 damaged columns in total; reinforce the 6 damaged columns and 2 undamaged ones under the same conditions with AFL, through quasi-static contrast test. Test results show that it is able to effectively boost horizontal ultimate bearing capacity and ductility deformability of the RC columns with AFL for reinforcement; besides, there is a linear function relationship between horizontal ultimate bearing capacity, target ductility factor, and damage percentage of secant stiffness.

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