As the key parts of the ship, the forgings of the Marine rudder system are often affected by the impact load during operation. Impact load refers to the load applied to the forging quickly in a short time, which is characterized by short acting time and high stress peak. This paper discusses the performance of forgings of Marine rudder system under impact load.
Influence of impact load on forgings of Marine rudder system
Stress distribution: Under the impact load, the stress distribution inside the forging of the Marine rudder system changes dramatically. Compared with the conventional static load, the impact load produces a higher stress peak and a larger stress gradient inside the forging.
Deformation and damage: High stress peaks may lead to plastic deformation of forgings and even local stress concentration areas. The impact load for a long time may lead to the accumulation of fatigue damage and reduce the structural integrity and service life of forgings.
Dynamic response: Under the impact load, Marine rudder system forgings show obvious dynamic response characteristics. The response of forging under different impact speed and energy is very different, which has an important influence on its structural stability and functional performance.
Evaluation method of impact load performance of forgings of Marine rudder system
Test method: By simulating the impact environment in the laboratory, the impact test of Marine rudder system forgings was carried out to obtain the actual performance data under the impact load. The impact test includes drop hammer impact, pendulum impact, etc., which can simulate the impact load of different forms and energies.
Numerical simulation: Using finite element analysis (FEA) and other numerical simulation methods, a fine model of Marine rudder forging is established to simulate its dynamic response process under impact load. By analyzing the simulation results, the stress distribution, deformation and energy absorption mechanism inside the forgings are understood.
Structural optimization and improvement: According to the test and simulation results, the structure of Marine rudder forging is optimized and improved to improve its performance under impact load. The optimization measures include improving the structure design of forgings, adjusting the distribution of materials, and introducing buffer structure.
Service performance monitoring: In the actual ship operation process, the Marine rudder system forgings are monitored in real time to record its performance data under the impact load. The impact resistance, damage evolution and reliability of forgings are evaluated through data analysis.
The performance of forgings of Marine rudder system under impact load is an important factor affecting the safe operation of ships. In order to ensure the reliability of rudder forgings under various impact loads, it is necessary to deeply understand the stress distribution, deformation and damage characteristics and dynamic response characteristics under impact loads. By means of laboratory simulation, numerical simulation, structural optimization and improvement, and service performance monitoring, the performance of Marine rudder system forgings under impact loads can be comprehensively evaluated, which provides strong support for improving the safety and reliability of ships.
Looking forward to the future, with the development of Marine industry and technological progress, the research on the performance of Marine rudder forgings under impact load will be more in-depth and refined. Future research should focus on the following aspects: developing more accurate numerical simulation methods to improve the accuracy of performance prediction of Marine rudder system forgings under impact loads; Explore new impact resistant materials and processes to improve the impact resistance and service life of forgings; Strengthen the research and application of real ship monitoring technology to realize the real-time monitoring and evaluation of the performance of Marine rudder system forgings under impact load. These studies will help to promote the scientific and technological progress of the shipbuilding industry and improve the safety and economy of ships.
