Padeye

An Aviation Machinists Mate connecting tiedown chains topadeyes on the ight deck of the aircraft carrier USS DwightD. Eisenhower (CVN 69)

A padeye is a device often found on boats that a line runsthrough, or provides an attachment point. It is a kind offairlead and often is bolted or welded to the deck or hullof a boat.It is also used in oil and gas projects to assist in the pur-pose of lifting.

1 DetailIts made of steel plate with radius at one side. lifting isdone with the help of a D-shackle or sling, which ts intothe hole of the padeye. Theremay be one ormore circularplates (cheek plates) welded around the hole.

2 DesigningThe following check should be done for the design ofpadeyes and to keep the stress less than the allowablestresses:At the hole:1. Bearing stress2. Shear stress3. Tensile stress4. Hertz Bearing stressAt the base1. Shear stress2. Tensile stress

3. Bending stress4. Combined bending stress and tensile stress5. Von-Mises stress[1]

A spreadsheet is more often used for this purpose.

3 References[1] http://e-book.lib.sjtu.edu.cn/otc-2007/pdfs/otc19040.

pdf

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2 4 TEXT AND IMAGE SOURCES, CONTRIBUTORS, AND LICENSES

4 Text and image sources, contributors, and licenses4.1 Text

Padeye Source: http://en.wikipedia.org/wiki/Padeye?oldid=643234534 Contributors: Jaiprakashsingh, XLerate, Malcolma, SmackBot,Markw99, Mshkc, Addbot, Guoguo12, Yobot, RockfangBot, Erik9bot, Vvnair 1978, BattyBot, DoctorKubla, Cxbishop and Anonymous:4

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File:US_Navy_100105-N-6604E-007_Aviation_Machinist{}s_Mate_Airman_John_Wagner_connects_a_tiedown_chain_to_a_padeye_on_the_flight_deck_of_the_aircraft_carrier_USS_Dwight_D._Eisenhower_(CVN_69).jpg Source:http://upload.wikimedia.org/wikipedia/commons/9/95/US_Navy_100105-N-6604E-007_Aviation_Machinist%27s_Mate_Airman_John_Wagner_connects_a_tiedown_chain_to_a_padeye_on_the_flight_deck_of_the_aircraft_carrier_USS_Dwight_D._Eisenhower_%28CVN_69%29.jpg License: Public domain Contributors:This Image was released by the United States Navy with the ID 100105-N-6604E-007 (next).This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information.Original artist: U.S. Navy photo by Mass Communication Specialist 3rd Class Bradley Evans

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DetailDesigningReferencesText and image sources, contributors, and licensesTextImagesContent license