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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Kayumov R.A. – doctor of physical-mathematical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Gatiyatullin A.E. – student E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Shabanov A.M. – student E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleDurability prediction for the beam in the time of plastic flow due to strengthening
Abstract.In this work we researched the dependence of stress distribution throughout the height of beam section made of viscoelastic matter and exposed to constant load. It is shown, that as time passes stress diagram stops to have linear character. The process of tension change has also been researched. Both steady-state creep and presence of strengthening cases are taken in the consideration. Time to fracture defined by the terms of linear law of damage summation. We analyzed hinge-supported at the both ends beam with rectangular section which was loaded up with local force in the middle. Elastic part of the deformation is connected with Hook's law for the force. The connection of force and deformation is accepted like the flow law. Total deformation of the fiber according to the height of the beam under bending is dividing by hypothesis Bernoulli. For the short circuit of the system equation of equilibrium in the view the connection of forces in the cross-section of the beam moment. The matter of the balk has such characteristics as E=2000 kH/сm2, length = 100 сm, cross-sectional height = 5 cm, cross-sectional width = 10 cm, K=240KH/ сm2, m=5, under the action of forces P=100 KH, 200 KH, 300 KH.
Keywords.stress, deformation, plastic flow, deflection, beam, strengthening, long-term strength.
For citations:Kayumov R.A., Gatiyatullin A.E., Shabanov A.M. Durability prediction for the beam in the time of plastic flow due to strengthening // Izvestiya KGASU. 2014. №4(30) P.326-330.


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