Criteria for Eliminating Cyclic Limit for PVHO Flat Disc Windows

Kemper, Bart

doi:10.1115/mts2013-0323

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…In particular, the main problem in the design and manufacture of the above products is to determine the wall thickness of a spherical vessel, which retains elastic stability and strength under the influence of external pressure. Research on this topic is presented in works [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

The Use of Acrylic as a Structural Material in the Design of Translucent Elements of Deep-Submergence Vehicles

Gasratova

Zuev

2021

MSF

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The exploration of the depths of the sea is an activity that is important for many branches of science; it is associated with the work of people and technology in extremely difficult external conditions, which, in their extremeness, are comparable, perhaps, only with the conquest of space. At the present stage, deep-sea surveys are carried out using various instruments, including manned ones. These machines do not belong to the class of military large-tonnage submarines, but to the so-called Bubble Subs. The hull, which is a translucent thick-walled spherical shell is the main characteristic feature of this type of underwater vehicle. The presented work lists the main problems faced by researchers in the strength analysis of such PMMA hulls. In particular, the issue of the significant difference between the results of calculations in cases where the material is considered as physically linear and as physically non-linear is disclosed in detail. In addition, the obtained numerical results are compared with the experimental data.

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Section: Introductionmentioning

confidence: 99%

The Use of Acrylic as a Structural Material in the Design of Translucent Elements of Deep-Submergence Vehicles

Gasratova

Zuev

2021

MSF

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“…In addition, the selection of the material of the optical element should take into account: resistance to the chemical effects of seawater; the requirements for optical components, namely, high transparency in the spectral range used, the possibility of using known technologies for processing optical materials both for obtaining transparent surfaces (grinding hardness) and for imparting the required shape. Studies on this topic are presented in papers [1][2][3][4][5][6][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Concerning the Determination of the Geometrical Parameters of the Optical Element of a Deep-Water Surveillance System

N.A¹,

Zuev²,

M.M³

2018

IJET

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Window Seat Weight Reduction Exploration With Nontraditional Seat Geometry

Trudel¹,

Stanley²

2019

mar technol soc j

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This article provides an overview of the design and exploratory testing of a nontraditional submersible window seat design. Typically, window seat geometry is guided by the American Society of Mechanical Engineers-Pressure Vessels for Human Occupancy-1 (ASME-PVHO-1) engineering standard as well as other references by ASME, Stachiw, etc. As viewing area increases, window seat geometry is partly driven by the size of the acrylic window and not solely by the requirements for a hull penetration of equivalent size. The discrepancy in strength and stiffness between the submersible hull materials and acrylic window can result in a window seat that is overbuilt relative to the required hull integrity. This research focuses on nontraditional window seat geometries that decrease weight while performing comparably to designs that conform to the ASME-PVHO-1 standard. A novel window seat is proposed with reductions in window seat weight between 22% and 33%. Design methodology, assumptions, Fine Element Analysis (FEA) results, deviations from the standard, and empirical design studies are summarized in detail. Two scale model windows were tested to their design depth for 102 cycles and showed acceptable signs of wear. FEA constraints were validated using strain gauge and displacement measurements on the conical and low pressure faces of the windows. Short Term Critical Pressure (STCP) testing was conducted in a hydrostatic pressure chamber where the two model windows reached 79% and 86% of their design pressure.

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Criteria for Eliminating Cyclic Limit for PVHO Flat Disc Windows

Cited by 3 publications

References 14 publications

The Use of Acrylic as a Structural Material in the Design of Translucent Elements of Deep-Submergence Vehicles

The Use of Acrylic as a Structural Material in the Design of Translucent Elements of Deep-Submergence Vehicles

Concerning the Determination of the Geometrical Parameters of the Optical Element of a Deep-Water Surveillance System

Window Seat Weight Reduction Exploration With Nontraditional Seat Geometry

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