Abstract
Due to the wide range of application for belt conveyors, engineers look for many different combinations of mechanical properties of conveyor and transmission belts. It can be made by creating multilayer or fibre reinforced composite materials from base thermoplastic or thermosetting polymers. In order to gain high strength with proper elasticity and friction coefficient, the core of the composite conveyor belt is made of polyamide film core, which can be combined with various types of polymer fabrics, films or even rubbers. In this paper authors show the complex model of multilayer composite belt with the polyamide core, which can be used in simulation analyses. The following model was derived based on the experimental research, which consisted of tensile, compression and shearing tests. In order to achieve the most accurate model, proper simulations in ABAQUS were made and then the results were compared with empirical mechanical characteristics of a conveyor belt. The main goal of this research is to fully describe the perforation process of conveyor and transmission belts for vacuum belt conveyors. The following model will help to develop design briefs for machines used for mechanical perforation.
Highlights
Due to the increasing requirements for the properties of the conveyor and transmission belts, it is necessary to continuously improve them in terms of design, materials and manufacturing technology
Flat belts usually have the structure of the multi-layer polymer composite (Fig. 1) and they consist of the core 1, protective gaskets 2 and two covers: bottom 3 and top 4 [1, 2]
Flexible, light belts whose core is made of polyurethane, polyvinyl chloride (PVC), fabric or rubber
Summary
Due to the increasing requirements for the properties of the conveyor and transmission belts, it is necessary to continuously improve them in terms of design, materials and manufacturing technology. Flat belts usually have the structure of the multi-layer polymer composite (Fig. 1) and they consist of the core 1, protective gaskets 2 and two covers: bottom (return) 3 and top (load-carrying) 4 [1, 2]. Due to beneficial frictional properties, return and load-carrying covers are made of nitrile butadiene rubber (NBR) whose surface structure can be both smooth and rough. Protective gaskets are used primarily in rigid belts, and their role is to protect the core from damage and to improve strength properties. The role of a gasket is played by a layer of properly woven polyamide fabric, which - in the process of merging belts - is melted into the structure of adjacent layers, ensuring integration of the belt structure [1,2,3]
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