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Method for prolonging fatigue life of complex structure of crude oil transfer barge

A technology with complex structure and fatigue life, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of cracks and fatigue damage, large stress concentration, short fatigue life of all random loads, etc., to improve fatigue strength , Improve the effect of fatigue life

Active Publication Date: 2021-06-04
COSCO SHIPPING SHIPYARD (NANGTONG) CO LTD +2
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  • Abstract
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Problems solved by technology

The stress concentration in the water hole area of ​​the complex structure inside the cabin is large, and the fatigue life of the full random load is short, which is easy to cause cracks and fatigue damage

Method used

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  • Method for prolonging fatigue life of complex structure of crude oil transfer barge
  • Method for prolonging fatigue life of complex structure of crude oil transfer barge
  • Method for prolonging fatigue life of complex structure of crude oil transfer barge

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Embodiment Construction

[0026] The technical solutions in the examples of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the examples of the present invention. Obviously, the described examples are only some examples of the present invention, not all examples.

[0027] It is difficult to obtain accurate and intuitive detection results directly by traditional ultrasonic testing for metal parts manufactured by composite additives. Therefore, it is first necessary to analyze the attenuation characteristics of ultrasonic waves inside the metal parts, and use advanced ultrasonic testing methods for its attenuation laws. Therefore, it is of great significance to study effective ultrasonic testing methods to achieve accurate evaluation of various internal defects.

[0028] combine figure 1 as well as Figure 5 , embodiment 1, is a kind of method that the present invention proposes and improves the complex structure fatigue life of crude...

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Abstract

The invention provides a method for prolonging the fatigue life of a complex structure of a crude oil transfer barge. The method comprises the following steps: step 110, establishing a full-random fatigue life prediction model; 120, collecting a 3D model of a target complex structure, determining positions and sizes of all drain holes of the 3D model, and inputting the 3D model into the full-random fatigue life prediction model to obtain a related prediction result; 130, determining drain holes with stress concentration according to related prediction results; and step 140, adjusting the position and the size of the drain hole with stress concentration, and paying attention to the adjusted prediction result in real time until the stress concentration problem is solved. According to the method, stress concentration can be effectively reduced by adjusting the position of the drain hole in the structural design. Meanwhile, residual compressive stress is further formed by using a laser shock peening method, and the fatigue life of a complex structure is prolonged.

Description

technical field [0001] The invention relates to the field of crude oil transfer barges, in particular to a method for improving the fatigue life of complex structures of crude oil transfer barges. Background technique [0002] China's oil dependence on foreign countries has exceeded 70%, and my country's lack of land oil resources has drawn much attention to the exploration of deep-sea oil resources. Floating production storage and offloading (FPSO) is being widely used. Conventional " The transportation mode of FPSO+shuttle oil tanker will be affected by complex operating sea conditions. The carrying capacity of the shuttle oil tanker is insufficient, and the operating cost is high, which cannot meet the market demand. Under such background, Crude Transfer Vessel (CTV) came into being. CTV is a type of ship that acts as a transmission bridge between offshore oil drilling platforms and trade tankers, and is of great significance to China's future maritime strategy. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/15G06F119/04G06F119/14
CPCG06F30/23G06F30/15G06F2119/04G06F2119/14
Inventor 张永康韦霖涛郭晓东吴承恩李荣蒋茸茸徐秀龙
Owner COSCO SHIPPING SHIPYARD (NANGTONG) CO LTD
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