Burst Pressure Determination of Vehicle Toroidal Oval Cross-Section LPG Fuel Tanks

Kişioğlu, Yasin

doi:10.1115/1.4002863

Cited by 18 publications

(12 citation statements)

References 9 publications

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“…R 0 [37] Major radius [8,37] Shell crown radius [42] Meridian radius [44] Bend/bending radius [35,36,38,39] Toroidal radius [45] Ring radius [46,47] r [mm] Cross-sectional radius a [8,31,32,41,42,48,49] x, y [44] r 0 [37] R 1 , R 2 [45] r 1 [50] R [43] Minor radius [37] Shell meridian radius [42] Toroid internal radius [42] Tube radius [35,36,38] Toroid tube radius [33,51,52] Toroidal shell radius [32] Meridian circle radius [48,49]…”

Section: Toroidal Pressure Vessel Parametersmentioning

confidence: 99%

“…Winding angle b [8] β [44] Ply angle [8] Wrap angle [44] Fibre trajectory [37] B, D (Figure 3) Poles (upper/lower) Crown (for upper pole) [31] Flanks [40] Crests [8,37,50] A, C (Figure 3) Equators (inner/outer) Inner/outer radii [50] Inside/outside [8,31,42,48] Inside/outside surfaces [41] Intrados/extrados [39,40] Equatorial periphery (for outer radius) [38] Inner/outer peripheries [35,38] Inner ring (for inner radius) [45] Inner/outer equatorial planes [51] XZ(ϕ) Cross-sectional plane Meridian [8, 31, 33, 36-38, 41, 44, 48-50, 52, 53]…”

Section: R/r [-]mentioning

confidence: 99%

“…Pressurisation of other various isotropic toroidal vessels has also been studied including the burst failure prediction of thin-walled LPG tanks [45], elastic-plastic failure analysis of thin toroidal shells [77], creep life behaviour of toroidal vessels with various degrees of ovality [78] and shell stress analysis of thick-walled, elastic-perfectly plastic toroidal shells [40]. Toroidal LPG tanks studied by Kisioglu [45] contained oval crosssections that allowed the vessels to have reduced height and therefore possess better space-saving potential than circular equivalents. However, LPG tanks operate at much lower internal pressures (less than 3.45 MPa) than those needed for hydrogen and CNG storage.…”

Section: Other Toroidal Vessel-related Researchmentioning

confidence: 99%

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A review of toroidal composite pressure vessel optimisation and damage tolerant design for high pressure gaseous fuel storage

Fowler

Orifici

Wang

2016

International Journal of Hydrogen Energy

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On-board high-pressure storage of hydrogen gas and compressed natural gas is critical to the widespread adoption of alternative gaseous fuel to reduce CO 2 emissions in transportation. Cylindrical pressure vessels are the traditional option for on-board gaseous fuel storage; however they possess domed heads that are prone to over-design and a source of manufacturing difficulties. Toroidal composite pressure vessels (CPV) have been recognised as a volumetrically efficient solution that could address these problems, thus reducing vessel mass, while improving storage efficiencies. Currently, there exist many gaps in toroidal CPV research which must be addressed to fully realise the potential of this technology. Herein we present a comprehensive and critical review of the design and optimisation of toroidal CPVs, focusing on damage tolerant design as a key requirement to meet safety standards and optimisation of toroidal cross-sectional profiles (shape, thickness variation and fibre winding pattern) to reduce or eliminate stress non-uniformity. An original analysis of toroidal radius ratio (R/r) influence on the thickness profiles of naturally-thickened and isotensoid circular toroidal CPVs is conducted. It is concluded that a focus on smaller radius ratios (1.25 < R/r < 3) is required to maximise the potential spacesaving and volumetric efficiencies of the torus. Leading international CPV standards are analysed in order to adapt three important design qualification requirements from cylindrical to toroidal structures. Building block approaches are also presented to aid the damage tolerant design of toroidal CPVs for the relevant design qualification tests.

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Section: Toroidal Pressure Vessel Parametersmentioning

confidence: 99%

Section: R/r [-]mentioning

confidence: 99%

Section: Other Toroidal Vessel-related Researchmentioning

confidence: 99%

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A review of toroidal composite pressure vessel optimisation and damage tolerant design for high pressure gaseous fuel storage

Fowler

Orifici

Wang

2016

International Journal of Hydrogen Energy

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“…[217,218]. Seventeen 45 liter carbon steel toroidal tanks were burst-tested during qualifying procedure for the anticipated LPG usage [219,220]. Water was the pressurization media.…”

Section: Burst Pressurementioning

confidence: 99%

Experimental Perspective on the Buckling of Pressure Vessel Components

Błachut

2013

Applied Mechanics Reviews

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This review aims to complement a milestone monograph by Singer et al. (2002, Buckling Experiments-Experimental Methods in Buckling of Thin-Walled Structures, Wiley, New York). Practical aspects of load bearing capacity are discussed under the general umbrella of "buckling." Plastic loads and burst pressures are included in addition to bifurcation and snap-through/collapse. The review concentrates on single and combined static stability of conical shells, cylinders, and their bowed out counterpart (axial compression and/or external pressure). Closed toroidal shells and domed ends onto pressure vessels subjected to internal and/or external pressures are also discussed. Domed ends include: torispheres, toricones, spherical caps, hemispheres, and ellipsoids. Most experiments have been carried in metals (mild steel, stainless steel, aluminum); however, details about hybrids (copper-steel-copper) and shells manufactured from carbon/glass fibers are included in the review. The existing concerns about geometric imperfections, uneven wall thickness, and influence of boundary conditions feature in reviewed research. They are supplemented by topics like imperfections in axial length of cylinders, imperfect load application, or erosion of the wall thickness. The latter topic tends to be more and more relevant due to ageing of vessels. While most experimentation has taken place on laboratory models, a small number of tests on full-scale models are also referenced.

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“…Derivation of plastic instability load for internally pressurised stainless steel toroid, followed by burst tests of two models, can be found in [6], [7]. Seventeen, 45 litre, carbon steel toroidal tanks were bursttested during qualifying procedure for the anticipated LPG usage [8], [9]. Water was the pressurisation media.…”

Section: Introductionmentioning

confidence: 99%

Toricones: Burst Pressures

Ifayefunmi¹,

Błachut²

Civil-Comp Proceedings

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The paper describes burst pressures of eight mild steel toriconical shells of laboratory scale. This is both a theoretical (numerical) and experimental study. All test models were initially loaded by external pressure until they buckled/collapsed. The toricones were subsequently internally pressurised until burst. The details about the numerical process which simulates the two-stage loading profile, i.e., starting with buckling by external pressure being followed by reloading using internal pressure for up to the burst, are given. The paper concentrates on numerical procedure which allows computation of the burst pressure using extensive plastic straining as a possible superior approach. It is argued that burst pressure based on the excessive plastic straining is closer to reality than the alternative approach based on plastic instability. The ratio of experimental burst pressure to the finite element computed values was found to be [(1.35, 0.96), (0.89, 0.92), (0.93, 0.90), (1.07, 0.95)] for four nominally identical pairs, respectively. Alternative approach to the estimation of burst pressure, based on plastic instability, gives the above ratio as [(0.79, 0.83), (0.77, 0.76), (0.74, 0.74), (0.74, 0.75)]. Hence the plastic instability based burst significantly, and consistently, overestimated experimental values. The proposed algorithm gave safe predictions for two cases (1.35, 1.07) and in the remaining six the predictions were on unsafe side (0.96, 0.89, 0.92, 0.93, 0.90, 0.95) but the disparity was not as bad as for the plastic instability approach.

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Burst Pressure Determination of Vehicle Toroidal Oval Cross-Section LPG Fuel Tanks

Cited by 18 publications

References 9 publications

A review of toroidal composite pressure vessel optimisation and damage tolerant design for high pressure gaseous fuel storage

A review of toroidal composite pressure vessel optimisation and damage tolerant design for high pressure gaseous fuel storage

Experimental Perspective on the Buckling of Pressure Vessel Components

Toricones: Burst Pressures

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