graduate student
Russian Federation
The article deals with the problem of lateral buckling of a wooden beam of rectangular cross-section, taking into account the initial imperfections under creep conditions. An algorithm for the numerical solution is presented. The linear Maxwell-Thompson equation is used as the creep law. The character of the growth of the deflection of the beam at various load levels is investigated and a new criterion is introduced to determine the critical time.
timber beam, stability, creep, lateral buckling, critical time
1. Pyatikrestovskiy, K.P. K voprosu o vybore moduley uprugosti pri raschete derevyannyh konstrukciy na prochnost', ustoychivost' i po deformaciyam / K.P.Pyatikrestovskiy // Stroitel'naya mehanika i raschet sooruzheniy.- 2012.- № 6.- S. 73-79.
2. Varenik, K. A. Raschet central'no-szhatyh derevyannyh elementov s uchetom polzuchesti: diss. ... kand. tehn. nauk: 05.23.01 / K.A. Varenik. - Velikiy Novgorod, 2015. - 167 s.
3. Lapina, A.P. Raschet vyazkouprugih sterzhney nekruglogo poperechnogo secheniya na svobodnoe kruchenie / A.P. Lapina, I.M. Zotov, A.S. Chepurnenko, B.M. Yazyev // Vestnik Dagestanskogo gosudarstvennogo tehnicheskogo universiteta. Tehnicheskie nauki. - 2020. - № 2. - S. 144-152.
4. Zotov, I.M. Calculation of the Rectangular Cross-Section Beams On the Side Buckling Taking into Account Creep / I.M. Zotov, A.P. Lapina, A.S. Chepurnenko, B.M. Yazyev //IOP Conference Series: Materials Science and Engineering. - 2019. - Vol. 661. - URL: https://iopscience.iop.org/article/10.1088/1757-899X/661/1/012004/pdf
5. Timoshenko, S.P. Ustoychivost' uprugih sistem. / S.P. Timoshenko. - L., M.: Gostehizdat, 1946. - 532 s.
6. Chepurnenko, A.S. Energeticheskiy metod pri raschete na ustoychivost' szhatyh sterzhney s uchetom polzuchesti / A. S. Chepurnenko, V. I. Andreev, B. M. Yazyev // Vestnik MGSU. - 2013. - №1. - S. 101-108.
7. Nikora, N.I. Opredelenie dlitel'nyh kriticheskih nagruzok dlya szhatyh polimernyh sterzhney pri nelineynoy polzuchesti / N. I. Nikora, A. S. Chepurnenko, S. V. Litvinov // Inzhenernyy vestnik Dona - 2015. - № 1, ch. 2. - URL: http://ivdon.ru/ru/magazine/archive/n1p2y2015/2796
8. Andreev, V.I. Energy method in the calculation stability of compressed polymer rods considering creep / V. I. Andreev, A. S. Chepurnenko, B. M. Yazyev // Advanced Materials Research. - 2014. - T. 1004-1005. - S. 257-260
