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Title: A nonlocal nonlinear stiffened shell theory with stiffeners modeled as geometrically-exact beams
Authors: Zhang, Qi
Li, Shaofan
Zhang, A-Man
Peng, Yuxiang
Zhou, Kun
Keywords: Engineering::Mechanical engineering
Issue Date: 2022
Source: Zhang, Q., Li, S., Zhang, A., Peng, Y. & Zhou, K. (2022). A nonlocal nonlinear stiffened shell theory with stiffeners modeled as geometrically-exact beams. Computer Methods in Applied Mechanics and Engineering, 397, 115150-.
Journal: Computer Methods in Applied Mechanics and Engineering
Abstract: In the present work, we have developed a nonlocal and nonlinear structure mechanics theory and computational formulations for the nonlinear stiffened shell with its stiffeners modeled by the three-dimensional geometrically exact beam model while the shell part is modeled by three-dimensional geometrically exact shell model. This hybrid beam-shell geometrically exact stiffened shell model is used for solving dynamic problems of stiffened shell structures, including dynamic fracture of the shell. We first formulate the nonlocal equations for geometrically nonlinear beams using the kinematics of geometrically exact beam theory. Then, we develop a stiffened shell model by coupling the nonlocal geometrically exact beam and shell formulations. Several numerical examples are presented to validate and verify both the nonlocal and nonlinear beam formulation and the nonlocal/nonlinear stiffened shell formulation. We have demonstrated that the proposed nonlocal stiffened shell theory can model the crack growth in stiffened shell structures.
ISSN: 0045-7825
DOI: 10.1016/j.cma.2022.115150
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2022 Elsevier B.V. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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