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In this paper, according to the actual working conditions of suspended pipeline sealer, simulation and theoretical analysis of structural strength are carried out. On the platform of FEM, stress and strain of pipeline are analyzed by using software ANSYS. Furthermore, on the basis of critical buckling strain method and mechanical principle, critical buckling strain and actual pressure are calculated...
The change of screw assembly stress and bearing preload on inertial platform system is the main cause of inertial platform system parameters drift such as constant drift and angular misalignment. The paper appropriately simplifies the complexity structure of the inertial platform system components, discusses the inertial platform system screw assembly stress and bearing preload finite element modeling...
In this paper, computational analysis of characteristics of deformation and internal forces in the loading system due to deep foundation pit excavation is conducted by establishing two-dimensional finite element model of excavation system including subsoil, and elastic bracing diaphragm based on FEM algorithm. Through computational studies, it is shown that the location of maximum horizontal displacement...
As a new tunnel structure form, double-arch tunnel is placed on the research stage at home and abroad. Since the stability of surrounding rock and its strain-stress have close relationship with the lining structure function appearance, the reliabilities of the support's design parameters as well as the working procedure, the stress and displacement in the surrounding rock during different working...
In order to protect Chinese ancient buildings, an ancient wooden building is taken as an example to study its progressive collapse under vertical transient loads. By LS-DYNA program simulation model of the ancient building is built. Then a structure member is considered inactive and failure loads in vertical direction are applied to the inactivation point to make the structure collapse. During the...
Shafts are channels linking the surface part and underground part of mines or hydropower stations, while the numerical simulation of super-deep shafts under construction is scarcely done. In order to promote the construction technology of shafts, a three dimensional FE analysis with surveillance records verification is carried out to simulate the full process of construction to analyze the stress...
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