Journal ArticleThree-dimensional nonlinear mixed 6-DOF beam element for thin-walled membersDu, Xinlong (ORCID:0000000189283630); Hajjar, Jerome F. (ORCID:0000000163440044)2021-07-0110303455Thin-Walled Structures164C0263-8231https://doi.org/10.1016/j.tws.2021.1078171638234National Science Foundation