Transverse Impact on Rectangular Metal and Reinforced Concrete Beams Taking into Account Bimodularity of the Material
Autor: | Grigory Strelnikov, Besarion Meskhi, Alexey Beskopylny, Elena Kadomtseva |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Materials science
numerical analysis 02 engineering and technology Span (engineering) bimodulus lcsh:Technology Article 0203 mechanical engineering Ultimate tensile strength General Materials Science lcsh:Microscopy lcsh:QC120-168.85 lcsh:QH201-278.5 Tension (physics) business.industry lcsh:T Structural engineering 021001 nanoscience & nanotechnology Rigid body Compression (physics) stress–strain state Shock (mechanics) metal beam Transverse plane 020303 mechanical engineering & transports lcsh:TA1-2040 lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology business lcsh:Engineering (General). Civil engineering (General) reinforced beam lcsh:TK1-9971 Beam (structure) |
Zdroj: | Materials, Vol 13, Iss 1579, p 1579 (2020) Materials Volume 13 Issue 7 |
ISSN: | 1996-1944 |
Popis: | This article is devoted to the stress&ndash strain state (SSS) study of metal and reinforced fiber-reinforced concrete beam under static and shock loading, depending on the bimodularity of the material, the mass of the beam, and the location of the reinforcing bars in zones under tension and compression. It is known that many materials have different tensile and compression properties, but in most cases, this is not taken into account. The calculations were carried out by using load-bearing metal beams made of silumin and steel and reinforced concrete beams under the action of a concentrated force applied in the middle of the span. The impact load is considered as the plastic action of an absolutely rigid body on the elastic system, taking into account the hypothesis of proportionality of the dynamic and static characteristics of the stress&ndash strain state of the body. The dependences of the maximum dynamic normal stresses on the number of locations of reinforcing bars in zones under tension and compression, the bimodularity of the material, and the reduced mass of the beam are obtained. A numerical study of SSS for metal and concrete beams has shown that bimodularity allows the prediction of beam deflections and normal stresses more accurately. |
Databáze: | OpenAIRE |
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