Elastic-Plastic Dynamic Buckling Analysis of Reticular Domes Subjected to Earthquake Motion

1997 ◽  
Vol 12 (3-4) ◽  
pp. 205-215 ◽  
Author(s):  
Koichiro Ishikawa ◽  
Shiro Kato

Static and Dynamic characteristics of shell-like structures such as reticular domes vary depending on their configuration. There is, however, very little information available concerning dynamic buckling collapse or dynamic buckling analysis. This paper presents a method for dynamic buckling analysis with emphasis on dynamic buckling behaviour subjected to vertical earthquake motion. The study focuses on the elastic-plastic buckling of the members of a large dome as well as on the global shell-like buckling of the dome. Through the analyses, the efficiency of the proposed analytical method is discussed while a method for estimating collapse accelerations is proposed.

Author(s):  
Mahdi Maarefdoust ◽  
Mehran Kadkhodayan

In this study, elastic/plastic buckling analysis of thick skew plates subjected to uniaxial compression or biaxial compression/tension loading using the generalized differential quadrature method is presented for the first time. The governing differential equations are derived based on the incremental and deformation theories of plasticity and first-order shear deformation theory. The elastic/plastic behavior of the plates is described by the Ramberg–Osgood model. Generalized differential quadrature discretization rules in association with an exact coordinate transformation are simultaneously used to transform and discretize the equilibrium equations and the related boundary conditions. The results are compared with the previously published data to verify the established methodology and procedures. The effect of skew angle and thickness ratio on the convergence and accuracy of the method are studied. Moreover, the effects of aspect, loading and thickness ratios, skew angle, incremental, and deformation theories and different types of boundary conditions on the buckling coefficients are presented in detail. The results show that the difference between the incremental and deformation theories becomes greater with increasing thickness ratio and constraints at boundary conditions. Furthermore, the skew angle also has an important effect on differences between those theories.


2021 ◽  
pp. 106781
Author(s):  
Wenbin Zhou ◽  
Zhusheng Shi ◽  
Yong Li ◽  
Qi Rong ◽  
Yuansong Zeng ◽  
...  

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