Abstract
In this paper is investigated the analysis of stress and deformation fields of shape complex beams. The shape complex beams are made from load-bearing sheet (trapezoidal sheet) circumferentially connected with strips of sheet metal, these beams are a substitute for more complex and heavier beams. The numerical analysis with static load are performed for these beams. The effect of three different types of connections between load-bearing sheet and strips of sheet metal is investigated. The first type of connection is represented by the trapezoidal sheet perfectly welded to the strips of sheet metal, the second type of connection is represented by the trapezoidal sheet welded to the strips of sheet metal only on the base sides of the trapezoidal sheet. The third one is represented by point welds. The stress and deformation fields for all types of the connections are compared and the suitable variant is chosen.
Highlights
Start of development of thin-walled structures can be traced back to the 19th century, due to the rapid development of the industry, it was necessary to create large-scale buildings, structures and facilities, when conventional design methodologies together with traditional materials could not be always applied
The shape complex beams are made from load-bearing sheet circumferentially connected with strips of sheet metal, these beams are a substitute for more complex and heavier beams
The numerical computations of the three variants shape complex beam were investigated in this paper
Summary
Start of development of thin-walled structures (beams) can be traced back to the 19th century, due to the rapid development of the industry, it was necessary to create large-scale buildings, structures and facilities, when conventional design methodologies together with traditional materials could not be always applied. The trend of optimal utilization of design and material is used for mass and cost reduction This creates opportunities for new ideas of design structural elements. New ideas can include trapezoidal beams, where the trapezoidal sheet is connected circumferentially with the strips of sheet metal. These beams can be used as part of roof construction, which can be used to protection of shipping containers before the different weathers [1]. The beams are carrier elements of the roof structure with dimensions identical with ship container (20 ́DC) of length 6058 mm, width 2438 mm, height 2591 mm, mass 2200 kg and load capacity 24 800 kg [2, 3]. Modern means of numerical modelling (finite element method) are used for design and optimization the beam [4,5,6]
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