Numerical Simulation of Cantilever Erection Procedure of Lattice Shell Structures

2011 ◽  
Vol 94-96 ◽  
pp. 1810-1813
Author(s):  
Shuai Xu ◽  
Yue Yin ◽  
Zhi Hua Chen
Keyword(s):  
Numerical Simulation ◽  
Double Layer ◽  
Shell Structures ◽  
Small Unit ◽  
Construction Technique ◽  
Internal Forces ◽  
Lattice Shell

This paper presented the construction technique of a double-layer spherical lattice shell with a diameter of 66m, while the small-unit cantilever erection method is adopted. The variations of internal forces during the different erection simulation procedures are also indicated. Meanwhile some suggestions are proposed to actual construction.

Numerical Simulation of Proton Distribution with Electric Double Layer in Extended Nanospaces

2013 ◽  
Vol 85 (9) ◽  
pp. 4468-4474 ◽  
Author(s):  
Chih-Chang Chang ◽  
Yutaka Kazoe ◽  
Kyojiro Morikawa ◽  
Kazuma Mawatari ◽  
Ruey-Jen Yang ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Double Layer ◽  
Electric Double Layer ◽  
Proton Distribution

Split Rigidity Method for Analysis of Three-Way Double-Layer Space Grids Structure

2012 ◽  
Vol 594-597 ◽  
pp. 820-823
Author(s):  
Wen Yang Liu ◽  
Wen Fu Zhang
Keyword(s):  
Double Layer ◽  
Natural Vibration ◽  
Sandwich Plate ◽  
High Accuracy ◽  
Traditional Theory ◽  
Natural Vibration Frequency ◽  
Plate Method ◽  
Generalized Displacements ◽  
Internal Forces ◽  
Shearing Deformation

Abstract. In this paper three-way double-layer space grids structure is assumed as equivalent sandwich plate, and has been analyzed by the non-traditional theory of plate with three generalized displacements, in which shearing deformation is considered. Based upon the split rigidity method, static analysis and natural vibration analysis of three-way double-layer space grids structure has been studied. The formulas for calculating internal forces, displacement as well as natural vibration frequency are given out. The comparison with finite element method and equivalent sandwich plate method shows that the formulas in this paper are not only simpler than other simplified methods but also of high accuracy.

Numerical simulation of the nonequilibrium diffuse double layer in ion-exchange membranes

1993 ◽  
Vol 97 (32) ◽  
pp. 8524-8530 ◽  
Author(s):  
J. A. Manzanares ◽  
W. D. Murphy ◽  
S. Mafe ◽  
H. Reiss
Keyword(s):  
Numerical Simulation ◽  
Ion Exchange ◽  
Double Layer ◽  
Diffuse Double Layer ◽  
Ion Exchange Membranes

Internal Stresses and Breakup of Porous Aggregates in Homogeneous Isotropic Turbulence

2014 ◽  
Author(s):  
Marco Vanni
Keyword(s):  
Numerical Simulation ◽  
Isotropic Turbulence ◽  
Internal Stresses ◽  
Length Scale ◽  
Homogeneous Isotropic Turbulence ◽  
Stokesian Dynamics ◽  
Disordered Structure ◽  
Kolmogorov Length Scale ◽  
Primary Particles ◽  
Internal Forces

The stresses acting on aggregates smaller than the Kolmogorov length scale in homogeneous isotropic turbulence were estimated by a two-scale numerical simulation. The fluid dynamics at the scales larger than the Kolmogorov length scale was calculated by a Direct Numerical Simulation of the turbulent flow, in which the aggregates were modeled as point particles. Then, we adopted Stokesian Dynamics to evaluate the phenomena governed by the smooth velocity field of the smallest scales. At this level the disordered structure of the aggregates was modeled in detail, in order to take into account the role that the primary particles have in generating and transferring the internal stress. From this result, it was possible to evaluate the internal forces acting at intermonomer contacts and determine the occurrence of breakup as a consequence of the failure of intermonomer bonds. The method was applied to disordered aggregates with isostatic and highly hyperstatic structures, respectively.

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