Marine Rubber Fender and Bumper

 A Marine  Fender is a bumper used to absorb the kinetic energy of a boat or vessel berthing against a jetty, quay wall or other vessel.Fenders are used to prevent damage to boats, vessels and berthing structures. Fenders are typically manufacturered out of rubber, foam elastomer or plastic. Rubber fenders are either extruded or made in a mould. The type of fender that is most suitable for an application depends on many variables, including dimensions and displacement of the vessel, maximum allowable stand-off, berthing structure, tidal variations and other berth-specific conditions. The size of the fender unit is based on the berthing energy of the vessel which is related to the square of the berthing velocity.

Marine Rubber Fender

Marine Fender type such as

V type Marine Fenders – use in jetty,quay wall,harbour

D type Marine Fenders – use in small jetty,vessel,pontoon,boat

Square Marine Fenders – use in pontoon,port,jetty

Cell type Rubber Fenders with frontal – use in large port,harbour

Cylinder (Cylindrical) type fender – use in larg boat,jetty

 

High Energy Absorption Rubber Fender with lower Reaction Force

The fender system selection has the following requirements:

• Energy absorption of a number of marine fender systems exceeds effective impacting energy of ships (EB).
• Reaction force of a particular fender system is less than the ship’s permissible reaction force.
• Surface pressure of a certain fender system is less than the acceptable hull surface pressure. You can meet the requirements by shifting the dimensions of the frontal panel.
• The selected fender system should be chosen intelligently for the investment (performance or worth). The price of repairs and installation should be considered in your investment. Fenders that have an easy installation and upkeep are a better option for your investment.
• The selected fender system should fulfill special requirements of extreme environments (strong winds, waves, high/cold temperature, high/low tides, etc.)
• When the vessel is berthing in an oblique direction, the fenders will bear an angular compression which will cut the energy absorption at point of impact. Thus, the fender performance should be accustomed in accordance with the berthing angles when choosing the fender system.

What is Fendering?

Fendering is essentially the boundary between a vessel and the berth facility. This medium works to absorb a definite portion of the kinetic energy of a vessel without harm to the vessel and the waterfront structure. In the case of rubber fenders, which are mostly relatively soft, the majority of the energy is fascinated through elastic deflection of the fender. But, perhaps also the deflection of the berth facility and/or the vessels hull will add to the absorption of the kinetic energy.

Berthing Energy

The kinetic energy of a berthing ship needs to be rapt by an appropriate fender system and this is most frequently carried out using well documented deterministic methods.

After the actual berthing Energy (EB) of the vessel is calculated, the selection of the fender system should be directed in accordance with the fenders performanceincluding reaction force, energy absorption, and deflection curve.

Bagikan ini:

Rubber Fenders are buffers between vessels and the wharf. The principal function of a fendering system is to provide protection for both wharf and vessel by absorbing the vessel’s berthing energy thus reducing the forces on both the wharf structure and vessel. The used of fender allow a reduction of wharf construction costs and provides ship owners with a satisfactory system for ship protection. The rubber fender bumper is used in the automotive, construction/building and marine industries.

Rubber Fenders

Rubber Fender systems vary from quite complicated arrangements to virtually no fendering. The simpler the better. Most usual form of modern fendering is rubber in various shapes, an improvement of the old rubber tire or steel flexible piles.

many type of Rubber Fender such :

V Type Rubber Fender 

Rubber Fender V

AV Type Rubber Fender,

Rubber Fender AV

Square Type Rubber Fender 

Rubber Fender Square

D Type Rubber Fender

D Rubber Fenders

Cylinder Rubber Fender,M Type Rubber Fender

Rubber Fender Cylinder

W Type Rubber Fender

W type Rubber Fender

Cell Type Rubber Fender

Rubber Fender Cell

ship side vertical rubber fender, square rubber fender and special type for tugboats,Super Arch fender

Rubber Fender Manufacturing and  Process

• Preparation of rubber compound
• Preparation of steel plates
• Application of bonding agent
• Compression moulding according to the shape of the fender

Marine Fendering System

The principal function of the marine fender system is to prevent the vessel or the dock from being damaged during the mooring process or during the berthing periods.Forces during the vessel berthing or anchoring may be in the form of impact,abrasive action from vessels,or direct pressure.These forces may cause extensive damage to the ship and structure if suitable means are not employed to counteract them.

二.Types of Marine Fender Systems

1.Standard pile-fender system

(1)Timber pile

(2)Hung timber

2.Retractable fender system

3.Rubber fender system

(1)Rubber-in-compression

(2)Rubber-in-shear.

(3)Lord flexible fender

(4)Rubber-in-torsion fender

(5)Pneumatic Fender

4.Gravity-type fender system

(1)Dashpot hydraulic