Analyzing the Nonlinear Dynamics of the Three Degree of Freedom Frame Structure Based on the NewMark-β Method and the Effect of Stiffness on the Displacement of the Structure. Journal of Civil Engineering Researchers, [S. l.], v. 6, n. 3, p. 9–17, 2024. DOI: 10.61186/JCER.6.3.9. Disponível em: http://www.journals-researchers.com/ojs/index.php/jcer/article/view/134. Acesso em: 5 sep. 2025.