Mechanical performance of rubber fenders
Rubber fenders are a kind of anti-collision equipment commonly used in docks. They have the advantages of low reaction force, high energy absorption, convenient installation, corrosion resistance, and long service life. Reasonable selection of rubber fenders can effectively ensure the safety of docks and ships, and reduce the probability of accidents during berthing and mooring. The mechanical performance of rubber fenders is very important for the selection of rubber fenders. It is an important indicator of fenders. The following are the mechanical performance standards for rubber fenders.
- Reaction force standard
When berthing and underthings, the reaction force“R” of the rubber fender should be lower than the allowable horizontal bearing capacity “Rma” of the dock structure, and higher than the hull’s hull pressing force “Rj” on the fender under the action of wind and water flow pressure. It is to ensure the mooring safety of the ship and the safety of the wharf structure in the mooring state.
The above relationship is expressed as follows: Rj<R< Rma
- Energy absorption standard
When the ship hits one or more rubber fenders, and the fenders reach the designed compressive deformation, The total energy absorption “E” should be higher than the effective impact energy “Eo” when the ship is berthing.
The above relationship is expressed as follows: E> Eo