فهرس المقالات سیدمهدی خرسندی جو المقاله 1 - Perfect Reduced Equilibrium Equations and Cross-sectional Stress Resultants for Small Elastic Orientation in Nonlinear Spatial Euler-Bernoulli Beam S. Mahdi Khorsandijou Journal of Mechanical Research and Application , العدد 1 , السنة 15 , بهار 2025