First Principles Variational Formulation and Analytical Solutions for Third Order Shear Deformable Beams with Simple Supports using Fourier Series Method. Journal of Civil Engineering Frontiers, [S. l.], v. 5, n. 02, p. 55–62, 2024. DOI: 10.38094/jocef50286. Disponível em: https://www.jocivilef.org/index.php/jocef/article/view/86. Acesso em: 29 jan. 2026.