Ultimate Strength of Damaged Tubular Bracing Members

Ellinas, C.P.

doi:10.1061/(asce)0733-9445(1984)110:2(245)

Cited by 37 publications

(11 citation statements)

References 3 publications

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“…Ellinas [22] developed a simple design-oriented analytical formula to estimate the reserve-load carrying capacity of circular tubular beam-column members with overall bending and local denting damage. Mohammad and Masoud [23] investigated the structural behavior of preloaded tubular members under lateral impact loads by means of finite element method.…”

Section: A Simplified Calculation Methods Of Impact Resistancementioning

confidence: 99%

Numerical studies on dynamic behavior of tubular T-joint subjected to impact loading

Huo

Chao

et al. 2014

International Journal of Impact Engineering

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Abstract:Joints play an important role in resisting impact loading in Tubular structures. In this paper, a finite element model validated by experimental results is developed to numerically study the failure modes and buckling mechanism of tubular T-joint impacted by a drop hammer with the initial velocity of 7-10 m/s. The resistant mechanism is investigated based on the dynamic responses of the joints under impact loading. Strain, displacement and the failure modes of the T-joints are also predicted. Global and local deformations of the tubular joints are distinguished using an equal area axis method, which helps to discover the buckling mechanism of the joints. Using the yield line theory, , an equivalent impact force estimation method is also proposed based on the impact load versus displacement relationship. The numerical analysis and the simplified method provide a basis for impact resistance evaluation and progressive collapse mitigation of steel tubular structures in design practice in the future.

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Section: A Simplified Calculation Methods Of Impact Resistancementioning

confidence: 99%

Numerical studies on dynamic behavior of tubular T-joint subjected to impact loading

Huo

Chao

et al. 2014

International Journal of Impact Engineering

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“…The predicted results agreed reasonably well with the experiments. Ellinas (1984) presented a simple method for estimating the reserved strength of damaged tubes with local denting damage, overall beam deflection, and combined local denting and overall deflection damage. The method showed a clear lower bound when compared to previous experiments and was conservative for safety considerations.…”

Section: Ultimate Strength Of Damaged Tubesmentioning

confidence: 99%

“…For dented tubes, a few formulations exist (refer to e.g. Taby (1986) and Ellinas (1984)) that allow taking post-damage strength into account. Naderi et al (2009) carried out a static pushover analysis of a jacket platform under both intact and damaged conditions using USFOS.…”

Section: Residual Strength Of Damaged Platformsmentioning

confidence: 99%

A review of structural responses and design of offshore tubular structures subjected to ship impacts

Zhang

Amdahl

2018

Ocean Engineering

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Over the past decades, the offshore oil and gas industry has developed rapidly. A large number of offshore structures, notably jacket and jack-up platforms, were constructed and installed worldwide. As they are often exposed to safety threats from impacts by visiting vessels and dropped objects, there has been a continuous interest in understanding the impact mechanics of tubular structures and proposing practical design standards to protect from collisions. This paper reviews the state-of-the-art with respect to the response dynamics and mechanics of offshore tubular structures subjected to mass impacts, covering material modelling, ship impact loading, energy absorption in the ship and platform, global and local responses of tubular structures, the residual strengths of damaged tubular members and design considerations to mitigate against ship impacts. A wealth of information is available in the literature, and recent findings and classical references, which have a wide influence, are prioritized. The collected information is compared and discussed. The findings in this paper will help understand the impact response of offshore tubular structures and assessment procedures, and provide useful indications for future research.

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“…In the light of the advancements in the ultimate limit state assessment of steel-plated structures [13], a better understanding of the collapse characteristics of damaged stiffened cylindrical shells predominantly subjected to axial compression is necessary. For the case of tubular members, which have a cylinder radiusover-shell thickness ratio of (R/t) in the range of 20 to 80 [14], the residual strength in damaged condition under various loading conditions has been investigated in a wide range of studies [15][16][17][18][19][20][21][22][23]. According to the statistics [12], a higher collision risk exists for floating platforms than for fixed platforms with mostly tubular members.…”

Section: Introductionmentioning

confidence: 99%

Ultimate strength of locally damaged steel stiffened cylinders under axial compression

Cerik

2015

Thin-Walled Structures

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a b s t r a c tThis paper focuses on the load-carrying behaviour of large diameter thin-walled stiffened cylinders with local damage when subjected to axial compressive loading. The case considered in this study corresponds to the residual strength assessment of columns of floating offshore structures with damage resulting from collisions with supply vessels. Numerical simulations of axial compression tests, which examine the collapse behaviour and the ultimate strength of ring-and orthogonally stiffened cylinders dented by a knife-edged indenter, are presented. The behaviour of eight small-scale ring-stiffened cylinders and four orthogonally stiffened cylinder specimens is analysed. Finite element analyses were performed using the ABAQUS FEA software package, and a close agreement between the experimental test results and the numerical predictions was achieved. To assess the factors influencing the reduction in ultimate strength under axial compression and to clarify the progressive collapse behaviour, further analyses were performed on design examples of ring-and orthogonally stiffened cylinders, considering both intact and damaged conditions.

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Ultimate Strength of Damaged Tubular Bracing Members

Cited by 37 publications

References 3 publications

Numerical studies on dynamic behavior of tubular T-joint subjected to impact loading

Numerical studies on dynamic behavior of tubular T-joint subjected to impact loading

A review of structural responses and design of offshore tubular structures subjected to ship impacts

Ultimate strength of locally damaged steel stiffened cylinders under axial compression

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