@Article{cmes.2019.04770,
AUTHOR = {Xinzheng  Lu, Yuan  Tian, Chujin  Sun, Shuhao  Zhang},
TITLE = {Development and Application of a High-Performance Triangular Shell Element and an Explicit Algorithm in OpenSees for Strongly Nonlinear Analysis},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {120},
YEAR = {2019},
NUMBER = {3},
PAGES = {561--582},
URL = {http://www.techscience.com/CMES/v120n3/27508},
ISSN = {1526-1506},
ABSTRACT = {The open-source finite element software, OpenSees, is widely used in the earthquake engineering community. However, the shell elements and explicit algorithm in OpenSees still require further improvements. Therefore, in this work, a triangular shell element, NLDKGT, and an explicit algorithm are proposed and implemented in OpenSees. Specifically, based on the generalized conforming theory and the updated Lagrangian formulation, the proposed NLDKGT element is suitable for problems with complicated boundary conditions and strong nonlinearity. The accuracy and reliability of the NLDKGT element are validated through typical cases. Furthermore, by adopting the leapfrog integration method, an explicit algorithm in OpenSees and a modal damping model are developed. Finally, the stability and efficiency of the proposed shell element and explicit algorithm are validated through the nonlinear time-history analysis of a high-rise building.},
DOI = {10.32604/cmes.2019.04770}
}