ABS Certification Aluminum Alloy Ribbed Plate
One of the biggest advantages of aluminum alloy over steel is that it can be made into profile products of any shape by extrusion. The aluminum sheet containing profiles made by extrusion is called aluminum alloy ribbed plate.
Europe was the first region to successfully develop ribbed plates and apply them to aluminum alloy hulls. Subsequently, Russia and other countries also successively manufactured this structure. The emergence of stiffened panels has a great impact on the structural design and construction process of aluminum alloy hulls.
Aluminum ribbed plates are plane structures containing several profiles parallel to each other in one direction. Compared with similar plane structures welded from aluminum plates and profiles, the application of ribbed plates shows obvious superiority in structural performance, hull quality, construction cycle, etc.
High geometric accuracy of ribbed plate structure
This is because the cross section of the component and its positioning are determined by the extrusion die, not by manual welding like the traditional plate. Therefore, the plane of the ribbed plate is very close to the "geometric plane". This makes the overall stability and local stability of the ribbed plate much better than the traditional aluminium plate. Thus, the thin-walled structure of the superstructure is given a smooth appearance.
For the traditional aluminum profile sheet, even if various measures to control welding deformation and post-welding correction processes are taken, it is impossible to achieve the same level as stiffened plate. The connection between the aluminum profile and the plate is an arc transition, which can be considered to have no stress concentration factor. This is something that traditional aluminum plate cannot do.
Small residual stress in the ribbed plate structure
Although the effect of compressive residual stress on aluminum alloy plates is smaller than that on steel structures. However, this effect must still be considered in stability calculations and cannot be ignored like ribbed plates. It can be seen that the use of ribbed aluminum plates improves stability both during construction and in use.
Reduced structural welds
With the use of ribbed plates, the large number of welds used to connect ordinary longitudinal profiles no longer exist. Depending on the size of the ribbed plate and the arrangement of the transverse members, the range of the reduction in the number of welds will vary. The reduction in the number of welds has a significant impact on both residual stress and geometric accuracy.
The alloy of stiffened panel is usually aluminium grade 6082t6. Welcome to leave message below to inquire what you need.
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