TY JOUR TI ABOUT THE ALGORITHM OF THE VARIATION METHOD FOR THE CALCULATION OF ELASTIC NON-FLAT FILAMENT WITH THE ACCOUNT OF FLEXURAL RIGIDITY (BENDING STIFFNESS) KW calculation algorithm KW elastic non-flat filament KW flexural rigidity KW variational method KW successive loading method KW linear stiffness matrix JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Zaharova, L.V. AU Aleksandrovskiy, M.V. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov