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A design method of three-purpose working stern drum

A drum and stern technology, applied in the field of simplified three-purpose work stern drum structure design, can solve problems such as structural nonlinearity, high strength requirements, lack of strength calculation basis of classification societies, etc., to control design costs and reduce work capacity requirements , The effect of reducing design time

Active Publication Date: 2019-04-05
南通润邦海洋工程装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structural design of the stern drum has the characteristics of high strength requirements, nonlinear structure, and lack of strength calculation basis of classification societies.

Method used

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  • A design method of three-purpose working stern drum
  • A design method of three-purpose working stern drum
  • A design method of three-purpose working stern drum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Design the tail drum of a three-purpose tugboat with a bollard drag force of 150 tons, the main parameters, the design load is 350 tons, and the length of the tail drum is 4000mm.

[0037] According to step 1 of the content of the invention, the formula for calculating the thickness of the cylinder shell is as follows,

[0038]

[0039] According to step 2 and step 3 of the content of the invention, the formula for calculating the size of the rib is as follows,

[0040]

[0041] Where [σ] = σs / 2, σs is the yield strength of the material.

[0042] Use Excel to write the above calculation formula, and take the weight as the evaluation target. It can be known that the smaller R is, the lighter the total weight is, but the height of the rib is higher. Considering the line shape at the actual installation position on the ship and the convenience of roller construction, take R=1000mm. If the material is AH40, the relationship between the thickness of the outer shell an...

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Abstract

The invention discloses a stern roller design method of an anchor handling towing supply vessel. The method comprises following steps: calculating the thickness of a roller enclosure according to a load, an allowable stress and assumed roller radius and stiffener interval; calculating the size of the axial stiffeners of the roller according to the load and assumed roller radius; calculating the size of the circular stiffeners of the roller according to the load and assumed roller radius; carrying out optimization design through taking the roller radius and the stiffener interval as variables and taking the weight of the roller as an object; and determining the final roller design scheme according to the optimization result. The method of the invention is advantaged by simplicity, effectiveness, simple method, improving the working efficiency, greatly shortening the roller structure design time and effectively controlling the weight of the roller.

Description

Technical field: [0001] The invention relates to the field of ship design and construction, and particularly designs a simplified three-purpose working stern drum structure design method. Background technique: [0002] Anchor handling towing supply vessel (AHTS for short) is a three-purpose guard vessel for deep-water operations that provides various characteristic operations for offshore oil engineering. It can provide various materials and materials for offshore oil platforms and can handle anchor handling operations and towing operations of platforms and large ships. [0003] When the three-purpose workboat helps other ships and offshore platforms to carry out anchor operation, the cable or anchor chain needs to be guided by the shark jaw and the tail drum. During operation, the tail drum will bear the corresponding load, so there are corresponding strength and rigidity requirements for the structure of the tail drum. The structural design of the stern drum has the char...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/23
Inventor 杨尚军
Owner 南通润邦海洋工程装备有限公司
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