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Innovation application: Cellular Structure Sandwich Panel Application

Title Cellular Structure Sandwich Panel Application

The method developed by the RTU Institute of Building Production allows to manufacture the metal sandwich panels with different types of cellular structure, strength, sound insulation and impact resistance level. Panels can also be used as electromagnetic wave dampers / reflectors.

A low cost perforated metal waste materials can be used for cellular core.

The use of finite element (GEM) allows to predict the structural deformation processes and to design the efficient structure of the cellular structure.

The manufacture of cellular panels from perforated metal is a very useful method for increasing the competitiveness of a company. This method can successfully utilize metal balances, thereby helping the economy to operate in a company. Perforation reduces the use of the material and, therefore, related to the cost reduction. The use of a perforated but durable material in panel manufacturing reduces the weight of the product, thus contributing to more efficient assembly work.

Keywords perforated metal materials, cellular structure, high resistance sandwich panels, metal wastes, recycling, modelling, decreased weight
Authors Viktors Mironovs
Mihails Lisicins
Irīna Boiko
Department (24400) Būvražošanas institūts
Statistical Classification of Economic Activities, NACE 2 Manufacture of fabricated metal products, except machinery and equipment
Manufacture of machinery and equipment n.e.c.
Construction of buildings
Description of the technology

The cell structure of the core is executed from a perforated metallic tape. The band may be pre-profiled in a longitudinal and/or transverse direction. The perforation openings may be completely open or partially executed with subsequent flipping. The opening shape may be cylindrical, oval, rectangular or more complex. The construction may be made of a band with a regular or occasional perforation. The perforated bands can be interconnected with welding or flexible joints, which are passed through the perforation openings. As a perforated band material steel wastes can be used, which can be obtained by various types of parts extrusion. For example, steel waste materials that are obtained after cutting of the chain drive elements. The bands can be profiled in an angle profile, which increases the stability of the structure and facilitates the fixing of the finishing panels. As a flexible bonding materials metallic wire or high strength polymer tape can be used. Those must be passed through gaps in a perforated band and tied by hand or specialized binding pistol.

Fig. 1. Examples of cellular structure sandwich panels.

The panel can be filled with various types of sound and/or thermal insulation materials.

The experts of the Institute of Building Construction can offer a development of the metal cellular structure panel design for construction and perform various strength calculations, as well as consultations for the preparation and operation of the production of these panels.

Applications There are numerous options for the application of cellular structure panels: • various architectural solutions; • metal construction solutions for building facades and floor systems (panels can be used for the construction of new and reconstructed industrial objects, for construction and renovation of residential buildings, for renovation of historical facades, for the construction of warehouses, sport complexes, commercial pavilions, for construction of industrial and data centre floor systems); • various types of coating, filters, electromagnetic radiation shielding.

The use of metal cellular structure panels provides a number of advantages:

  • efficient material application;
  • reducing the weight of the structures;
  • increasing the fire resistance;
  • prolonging the service life;
  • promoting sound insulation and other benefits.

Metal cell panels can be used in construction both in the façade and in supporting structures.

Technology Readiness Level System prototype demonstration in operational environment
Partnership offer • Service contracts. • Joint venture.
  • LV 14989 B
ID 108
Contact information Linda Šufriča, e-mail: inovacijas@rtu.lv; phone.: 28442736