On criteria of selecting filler material parameters in supporting thin-walled frame-type structures in relation to the tasks of cars and tractors passive safety
Authors: Goncharov R.B., Zuzov V.N.
Published in issue: #4(88)/2019
DOI: 10.18698/2308-6033-2019-4-1865
Category: Mechanics | Chapter: Dynamics, Strength of Machines, Instruments, and Equipment
This paper addresses the issues of improving the efficiency of using filler materials in frame elements of truck cabs. To solve this problem, we carried out a numerical study of aluminum alloy AMg6 pipes with quasi-static three-point bending with various fillers. The following materials can be used as fillers: brittle materials, i.e. epoxy resin, polystyrene; hyperelastic materials, i.e. rubber, polyurethane; elastic-plastic materials, i.e. foam aluminum with a density of 430 kg / m3 and 800 kg / m3. Foam aluminum with a density of 800 kg / m3 appears to be the most effective filler material. The load factor is 364, and the specific energy consumption is 22.295 more than that of a hollow pipe. As for brittle and hyperelastic materials, they were found to make almost no improvement in mechanical characteristics. Based on the analysis of the results obtained, we propose parameters, such as specific energy consumption, load factor, change in cross-sectional area in the contact zone, loss of bearing capacity, and their threshold values, which are necessary for preliminary assessment of the feasibility and effectiveness of using existing and newly developed fillers to modify cabs and car bodies according to the requirements of passive safety
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