Research Of Numerical Simulation On The Anti-collision Device Made By Composite Material

In recent years, with the rapid development of the rail-highway communicationnetwork, a large number of bridges across the inland waterways even the Strait areconstructed. At the same time, the class of waterway continuous is also constantlyupgrading with the development of the shipping industry. So not only the number ofships, the tonnage is also increasing. The bridge is an important symbol to thedevelopment of a city, but on the other hand, so much number of bridges will bring alot of trouble to the waterway transport. The domestic and foreign collision accidentsof ship-bridge have occurred frequently, in the light aspect the bridge need to bemaintained and reinforced, and in the serious aspect the accidents will lead to thecollapse of bridge and casualties. So the problem of ship-bridge collision has becamean important issue that needed to be solved as a matter of urgency for the bridgedesigners. In order to prevent the accident of ship-bridge collision, the bridge designershas taken many appropriate precautions, including the installation of the passiveanti-collision devices to the bridge have been built or under construction. The role ofthe anti-collision devices is that it can reduce the damage of the bridge by changing thehitting direction or decreasing the force of the ship. At the same time it can as much aspossible to reduce the damage of the ship and anti-collision devices. There has beenput into use a lot of different types of bridge anti-collision device around the world,and according to its own characteristics applied to different situations. In this paper, byusing the experimental study and numerical simulation method, the author researchesthe energy dissipation properties of the anti-collision device made by compositematerial.At first this article briefly introduce the major research methods of ship-bridgecollision problem, by analyzing and comparing the merits of this methods, propose thatto study this paper by using method Then briefly summarized the domestic and foreignresearch of the and numerical simulation for the composite material. Design a collisiontest of the anti-collision device. By using the same collision quality and the differentcollision velocities to hit the test beam, the context set four different conditions. Onstatistical analysis the dynamic acceleration and displacement on the key cross-sectionof the test beam when collected during the collision, it found that at the different collision velocities, the peak of the acceleration and displacement will declined whenthe anti-collision is set on the test beam. While using the LS-DYNA for dynamic to thenumerical simulation for the collision test, compared with the results between the twomethods it was found that the acceleration data of numerical simulation is larger thanthe experimental, and the one of the displacement is about half of the test, but in aspectof energy dissipation effect of the anti-collision, the trend is consistent with both of thetwo methods.Finally, to do the numerical simulation to the P1auxiliary pier of a bridge that hasa relatively weak ability of the anti-collision. To be simulated between the two aspectsof the different protection status and impact velocities. From the perspective of projectexamples to further validate the performance of the collision crash box sets theengineering application From the perspective of engineering application to furthervalidate the anti-collision performance of the anti-collision device.