Calculation of energy distribution and impact force of rubber fenders

Calculation of energy distribution and impact force of rubber fenders

The rubber fender absorbs the ship impact energy by the larger deformation of the upper end of the cantilever after being hit by the ship. It requires good foundation condition and strong ability to adapt to deformation, and generally adopts steel pipe pile structure. Rubber fender is a kind of commonly used anti-collision facilities, with the characteristics of large energy absorption, small reaction force and corrosion resistance. The reasonable choice of rubber fender can not only guarantee the safety of the ship, but also reduce the structural force, thus reducing the cost of the project.

The force acting on the leaning pile is mainly the ship impact force. The calculation theory

The kinetic energy theory is conventionally used: the effective impact energy of the ship hitting the quay will be absorbed by the fender deformation.The effective impact energy E0 is.

effective impact energy, kN-m.

M-vessel mass, t.

V-normal velocity of the ship against the quay, m/s.

p-Effective kinetic energy coefficient, 0.7~0.8.