Research Ship Collision Based On Fishing Vessel And Oil Tanker Collision Accident

In recent years, the number of ships has increased greatly. The navigable density has become more bigger and bigger. Ship collision can always cause a series of disastrous consequences such as the structure damage, cargo leakage, environmental pollution and casualties. Therefore, it has great significance not from the standpoint of the economy, security, but from the perspective of environmental protection to research and improve the anti-vibration of vessels.The study of ship collision involves many subjects and fields. The analysis of ship structure collision demands to synthesize many kinds of knowledge includes structure dynamics, fracture mechanics, plastic mechanics, material mechanics and water dynamics. Moreover, it still needs to master the use of finite element and its theoretical analysis. Therefore, the study of the ship collision is quite complicated.There are more fishing vessels and the courses are very complicated in China's coastline. Collisions between foreign ships and Chinese fishing vessels are of frequent occurrence and result in disastrous effects for the marine environment and life and property. I analyze and summarize the current status of research on ship collisions combined with practical collision cases as well as sums up the basic principles and key technology for nonlinear finite element method of ship collisions in this paper. In addition, introduces the finite element analysis software.Due to the fast development of computer software and hardware, there are no difficulties in principle to calculate and analyze the strength of the whole ship structure. However, the application is not widely because it requires a great deal of work and touches upon many factors. Moreover, at present to do finite element analysis for ship modeling is quite uncommon in domestic. The paper used CAD software to establish the whole ship's three-dimensional simulation model and put it into finite element software in combination with the practical collision situation and fully considered the factors of the material nonlinear, geometry nonlinear and contact nonlinear. On this basis, the collision process is simulated by explicit dynamic module in ANSYS Workbench and studies the collision resistance performance of the ship from the aspect of collision force, deformation and energy absorption. We also discussed the different initial collision velocity and collision position will deform in different forms and damage in varying degree to ship. The general conclusion of ship collision performance has been achieved in this paper. Meanwhile, according to the collision characteristics, Draw several improve ships crashworthiness method. Calculated and analyzed the damage stability after collision, through the comparison of the intact and damage stability of the fishing vessel. Get a Conclusion of ship collision Impact on the stability of the ship.