Coolant starvation in a transpiration-cooled hemispherical shell.

1968 ◽  
Vol 5 (6) ◽  
pp. 751-752 ◽  
Author(s):  
P. J. SCHNEIDER ◽  
R. E. MAUBER
Keyword(s):  
Hemispherical Shell

Dynamic response of internally nested hemispherical shell system to impact loading

2017 ◽  
Vol 120 ◽  
pp. 29-37 ◽  
Author(s):  
Jianxing Hu ◽  
Guoyun Lu ◽  
Huiwei Yang ◽  
T.X. Yu ◽  
Jun Xu
Keyword(s):  
Dynamic Response ◽  
Impact Loading ◽  
Shell System ◽  
Hemispherical Shell

Invar-36 Micro Hemispherical Shell Resonators

2014 ◽  
Author(s):  
Nishanth Mehanathan ◽  
Vahid Tavassoli ◽  
Peng Shao ◽  
Logan Sorenson ◽  
Farrokh Ayazi
Keyword(s):  
Hemispherical Shell

Conditions for dynamical symmetry of a nonideal hemispherical shell with perturbation of the shape of the rim

1989 ◽  
Vol 25 (9) ◽  
pp. 941-947
Author(s):  
M. A. Pavlovskii ◽  
S. A. Sarapulov ◽  
S. P. Kisilenko
Keyword(s):  
Dynamical Symmetry ◽  
Hemispherical Shell

scholarly journals Characterization of an Aluminum Alloy Hemispherical Shell Fabricated via Direct Metal Laser Melting

JOM ◽  
2016 ◽  
Vol 68 (3) ◽  
pp. 1000-1011 ◽  
Author(s):  
T. G. Holesinger ◽  
J. S. Carpenter ◽  
T. J. Lienert ◽  
B. M. Patterson ◽  
P. A. Papin ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Laser Melting ◽  
Hemispherical Shell

Asymmetric Postbuckling Behavior of Hemispherical Shell Structure Under Axial Compression

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
Shanshuai Wang ◽  
Shuhui Li ◽  
Ji He ◽  
Yixi Zhao
Keyword(s):  
Stainless Steel ◽  
Axial Compression ◽  
Shell Structure ◽  
Load Capacity ◽  
Plastic Hinge ◽  
Shell Structures ◽  
Postbuckling Behavior ◽  
Asymmetric Deformation ◽  
Deformation Stage ◽  
Hemispherical Shell

In real physical experiments, three typical deformation stages including elastic deformation stage, symmetric deformation stage, and asymmetric deformation stage appear step by step when the stainless steel hemispherical shell structure is under axial compression loading. During the asymmetric deformation stage, the rolling-plastic-hinge-radius which characterizes the size of the deformation area evolves along the circumferential direction with the compressive displacement. For the hemispherical shell structures with apparent asymmetric deformation stage, the double-buckling phenomenon of the structures in experiments can be clearly detected. The traditional theoretical analysis based on the assumption with circumferentially constant rolling-plastic-hinge-radius is not suitable to predict this phenomenon. For these hemispherical shell structures, load capacity and absorbed energy predicted by the traditional analysis are usually higher than experimental results in the asymmetric deformation stage. In this paper, a new description based on experimental observation for the evolution of rolling-plastic-hinge-radius has been proposed. Minimum energy principle was employed to obtain the postbuckling behavior. The energy evolution of different buckling stages during compression loading is investigated to evaluate the structure load capacity. Stainless steel hemispherical specimens with different sizes are tested under axial compression between two rigid plates to verify the theoretical modification. Good agreement is achieved between proposed model and experimental results. The theoretical model proposed in this paper can be used in prediction of postbuckling behavior for different deformation patterns in the asymmetric deformation stage. It also provides higher flexibility and efficiency for the postbuckling behavior prediction of hemispherical shell structures.

Influence Coefficients for Hemispherical Shells With Small Openings at the Vertex

1955 ◽  
Vol 22 (1) ◽  
pp. 20-24
Author(s):  
G. D. Galletly
Keyword(s):  
Constant Thickness ◽  
Influence Coefficient ◽  
Circular Opening ◽  
Central Angle ◽  
Calculation Time ◽  
Numerical Example ◽  
Hemispherical Shell ◽  
Influence Coefficients ◽  
Hemispherical Shells

Abstract Three methods of obtaining the influence coefficients for a thin, constant-thickness, hemispherical shell with a circular opening at the vertex were investigated and utilized in a numerical example. Bearing in mind both accuracy and calculation time, it was concluded that when the total central angle subtended by the opening is less than approximately 30 deg, good results for the influence coefficient calculation will be obtained by using Method II in the text of the paper.

Modeling and simulation of heat and mass transfer during drying of solids with hemispherical shell geometry

2011 ◽  
Vol 35 (2) ◽  
pp. 191-199 ◽  
Author(s):  
I.I. Ruiz-López ◽  
H. Ruiz-Espinosa ◽  
M.L. Luna-Guevara ◽  
M.A. García-Alvarado
Keyword(s):  
Mass Transfer ◽  
Modeling And Simulation ◽  
Heat And Mass Transfer ◽  
Hemispherical Shell ◽  
Shell Geometry
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