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Stability capacity design of grid cylindrical-lattice shells loaded axially
Abstract This paper presents the stability behaviours and capacity design of the grid cylindrical-lattice shell (GCLS) which consists mainly of the multi-columns located circumferentially and the multi-story ring-beams uniformly distributed along the height. The GCLS under axial compression is investigated in the stability capacity by using a finite element model that has been validated by an experimental investigation carried previously out by the authors. A large number of numerical examples of GCLSs covering a common design range of engineering applications are analyzed numerically by employing the validated finite element (FE) model to investigate the ultimate load-carrying capacity, and accordingly a stability capacity design method regarding the compression stability coefficient φ N and the normalized slenderness ratio λ N is established. Based on a design criterion that the failure of the ring beams does not precede the multi-column instability, the strength design formula of the ring beam is proposed accordingly and validated by using FE numerical results. In summary, this paper supplies a complete design method for predicting the stability capacity of the GCLSs as well as strength check of the ring beams in the GCLSs under axial compression. This study lays a preliminary research foundation for subsequent research on the stability capacity design of GCLSs under a combined action of axial compression and bending moment.
Graphical abstract Display Omitted
Highlights Load-carrying capacity of GCLSs under axial compression are investigated theoretically and numerically. Stability curve φ N -λ N obtained by using numerical examples can be directly used in the design of the GCLSs. The strength design formula of the ring beam is established based on the theoretical and numerical investigation.
Stability capacity design of grid cylindrical-lattice shells loaded axially
Abstract This paper presents the stability behaviours and capacity design of the grid cylindrical-lattice shell (GCLS) which consists mainly of the multi-columns located circumferentially and the multi-story ring-beams uniformly distributed along the height. The GCLS under axial compression is investigated in the stability capacity by using a finite element model that has been validated by an experimental investigation carried previously out by the authors. A large number of numerical examples of GCLSs covering a common design range of engineering applications are analyzed numerically by employing the validated finite element (FE) model to investigate the ultimate load-carrying capacity, and accordingly a stability capacity design method regarding the compression stability coefficient φ N and the normalized slenderness ratio λ N is established. Based on a design criterion that the failure of the ring beams does not precede the multi-column instability, the strength design formula of the ring beam is proposed accordingly and validated by using FE numerical results. In summary, this paper supplies a complete design method for predicting the stability capacity of the GCLSs as well as strength check of the ring beams in the GCLSs under axial compression. This study lays a preliminary research foundation for subsequent research on the stability capacity design of GCLSs under a combined action of axial compression and bending moment.
Graphical abstract Display Omitted
Highlights Load-carrying capacity of GCLSs under axial compression are investigated theoretically and numerically. Stability curve φ N -λ N obtained by using numerical examples can be directly used in the design of the GCLSs. The strength design formula of the ring beam is established based on the theoretical and numerical investigation.
Stability capacity design of grid cylindrical-lattice shells loaded axially
Zhu, Bo-Li (author) / Guo, Yan-Lin (author) / Zhang, You-Hao (author)
2022-04-10
Article (Journal)
Electronic Resource
English
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