Marine container forgings are subjected to a variety of complex loads and working conditions in the Marine environment, so its anti-shock and anti-fatigue design is of great significance to ensure the safety and life of the ship structure. This paper will introduce the design principles and anti-fatigue design methods of Marine container forgings, and discuss the existing research results and development direction.
- Marine container forgings are an important part of the ship structure to withstand extreme loads and complex working conditions, and their shockproof and anti-fatigue design is the key to ensure the safety and reliability of the ship structure. The anti-vibration design aims to reduce the stress and deformation of the forgings caused by the vibration, and the anti-fatigue design is to improve the durability and life of the forgings.
- Anti-shock design principle of Marine container forgings
2.1 Principle 1: Reasonably delineate the construction area
According to the position and force of the forgings, the construction area is delimited to avoid the work with large vibration near the forgings. Reasonably demarcating the construction area can reduce the influence of vibration on forgings and reduce the stress and deformation of forgings.
2.2 Principle 2: Optimize structural design
In the structural design of Marine container forgings, the principles of reasonable layout, moderate rigidity and uniform stress distribution should be considered. The stiffness and vibration resistance of forgings can be increased and the stress and deformation caused by vibration can be reduced by using appropriate reinforcement bars, tie bars and connection modes.
2.3 Principle 3: Select materials with good seismic performance
In the choice of materials for Marine container forgings, priority is given to materials with good seismic performance, such as high-strength steel, alloy steel, etc. These materials have high strength, toughness and fatigue resistance, and can effectively resist the influence of seismic forces and vibration loads.
- Anti-fatigue design method of Marine container forging
3.1 Fatigue strength evaluation
By evaluating the fatigue strength of Marine container forgings, the fatigue life under given working conditions is determined. According to the S-N curve of the material and the actual load history, the fatigue strength index of the forging is calculated to evaluate its anti-fatigue performance.
3.2 Fatigue damage detection and monitoring
The use of non-destructive testing technology, such as ultrasonic, magnetic particle flaw detection, regular inspection and monitoring of Marine container forgings, timely detection of fatigue cracks and defects, and necessary maintenance and treatment to extend the service life of forgings.
3.3 Optimization of working condition design
In ship design stage, the fatigue resistance of Marine container forgings can be improved by optimizing working condition design, distributing load reasonably and reducing stress concentration area. Considering the load change and vibration characteristics under different working conditions, the corresponding working conditions design standards and specifications are formulated.
- Existing research results and development direction
At present, some researches have been devoted to the design of anti-shock and anti-fatigue of Marine container forgings. Future research can be carried out from the following aspects: in-depth study of dynamic response characteristics of forging materials; Optimize the structural design and connection mode to improve the seismic resistance of forgings; Develop new materials and efficient processing technology to improve the fatigue resistance of Marine container forgings. - Conclusion
The anti-shock and anti-fatigue design of Marine container forgings is of great significance to the safety and life of ship structure. The anti-vibration and anti-fatigue properties of Marine container forgings can be effectively improved by reasonably delimiting construction area, optimizing structural design, selecting materials with good seismic performance and evaluating and monitoring fatigue strength.
