First Principles Variational Formulation and Analytical Solutions for Third Order Shear Deformable Beams with Simple Supports using Fourier Series Method. JoCEF [Internet]. 2024 Oct. 12 [cited 2026 Jan. 29];5(02):55-62. Available from: https://www.jocivilef.org/index.php/jocef/article/view/86