On Numerical Simulation of Cyclic Elastoplastic Deformation Processes of Shell Structures

2009 ◽  
Author(s):  
J. Soric ◽  
Z. Tonkovic ◽  
W.B. Kraetzig
Keyword(s):  
Numerical Simulation ◽  
Elastoplastic Deformation ◽  
Shell Structures ◽  
Deformation Processes ◽  
Cyclic Elastoplastic Deformation

Cyclic elastoplastic deformation and endurance of materials under simple and complex loading

1985 ◽  
Vol 17 (10) ◽  
pp. 1392-1399
Author(s):  
N. S. Mozharovskii ◽  
K. N. Rudakov ◽  
S. N. Shukaev
Keyword(s):  
Elastoplastic Deformation ◽  
Complex Loading ◽  
Cyclic Elastoplastic Deformation

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 the Effects of Cell Size on the Mechanical Property of Microcellular Polypropylene

2011 ◽  
Vol 189-193 ◽  
pp. 57-61 ◽  
Author(s):  
Wei Gong ◽  
Chun Zhang ◽  
Jie Yu ◽  
Ying He ◽  
Li He
Keyword(s):  
Numerical Simulation ◽  
Mechanical Property ◽  
Finite Element Method ◽  
Finite Element ◽  
Cell Size ◽  
Plane Stress ◽  
Tensile Deformation ◽  
Uniform Size ◽  
Deformation Processes ◽  
Simulation Results

The tensile model of foams is built using UG software and the tensile deformation processes of microcellular polypropylene foams with different cell sizes are simulated using finite element method (FEM). The effect of cell size on mechanical property is evaluated based on the microstructure of the foams. The cells with small and uniform size are in a state of plane stress, which improved effectively mechanical property of the foams. Whereas the cells with large and nonuniform size are in a state of plane strain, which leads to low mechanical property. The simulation results coincide well with experimental results.

scholarly journals Effects of Shell on Bore center Annular Shaped Charges Formation and Penetrating into Steel Targets

2020 ◽  
Vol 70 (1) ◽  
pp. 35-40
Author(s):  
Wenlong Xu ◽  
Cheng Wang ◽  
Jianming Yuan ◽  
Weiliang Goh ◽  
Bin Xu
Keyword(s):  
Numerical Simulation ◽  
Radial Velocity ◽  
Numerical Simulations ◽  
Penetration Depth ◽  
Axial Velocity ◽  
Shaped Charge ◽  
Shell Structures ◽  
Steel Shell ◽  
Simulation Results ◽  
Good Agreement

Annular shaped charge can efficiently create large penetration diameter, which can solve the problem of small penetration diameter of a traditional shaped charge, and thus meeting the requirements of large penetration diameter in some specific situations. In this paper, the influence of five kinds shell structures, i.e. no shell, aluminum shell with thickness of 2.0 mm and steel shell with thickness of 2.0 mm, 3.0 mm and 4.0 mm, on bore-center annular shaped charges (BCASCs) formation and penetrating steel targets was investigated by numerical simulations and experiments. The numerical simulation results are in good agreement with the experimental results. The results showed that, from no shell to aluminum shell of 2.0 mm and then to steel shell of 2.0 mm, 3.0 mm and 4.0 mm for BCASCs, the diameter and radial velocity of projectile head decrease, the axial velocity of BCASC projectiles increases gradually, the penetration diameter of the targets decreases, and the penetration depth increases. The penetration diameter caused by the BCASC with no shell is the largest, being 116.0 mm (1.16D), D is the charge diameter. The penetration depth caused by the BCASC with steel shell of 4.0 mm thickness is the deepest, being 76.4 mm (0.76D).

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