TY JOUR TI DOUBLE-GRID MODELING OF CYLINDRICAL SHELLS AND PANELS OF VARIABLE THICKNESS KW composites KW elasticity KW cylindrical shells KW panels KW finite element method KW double-grid elements JO Bulletin of KSAU AU Matveev, A.D. AU Grishanov, A.N. PY 2014 IS PB Krasnoyarsk State Agrarian University