On the finite displacement problem of a hollow cylinder under internal and external pressures

1984 ◽  
Vol 5 (4) ◽  
pp. 1557-1570
Author(s):  
Huang Ze-yan
Keyword(s):  
Hollow Cylinder ◽  
Displacement Problem ◽  
Finite Displacement ◽  
External Pressures

scholarly journals Large deformations of a cylindrical tube with prestressed coatings

2019 ◽  
Vol 484 (5) ◽  
pp. 542-546
Author(s):  
L. M. Zubov
Keyword(s):  
Exact Solution ◽  
Hollow Cylinder ◽  
Large Deformations ◽  
Cylindrical Tube ◽  
Longitudinal Force ◽  
Circular Cylinders ◽  
Elastic Materials ◽  
External Pressures ◽  
Nonlinear Elastic

The problem of large deformations in a combined nonlinear elastic hollow cylinder under internal and external pressures, loaded with a longitudinal force and torque at the end faces, is under consideration. The combined cylinder is a tube with the internal and external coatings in the form of prestressed hollow circular cylinders. An exact solution to the problem is found, which is valid for any model of isotropic incompressible elastic materials.

A Computer Method for the Finite Displacement Problem in Spatial Mechanisms

1982 ◽  
Vol 104 (4) ◽  
pp. 869-874 ◽  
Author(s):  
J. A. Ta´rrago ◽  
M. A. Serna ◽  
C. Bastero ◽  
J. Garci´a de Jalo´n
Keyword(s):  
Least Squares Method ◽  
System Of Nonlinear Equations ◽  
Convergence Properties ◽  
Kinematic Constraint ◽  
Good Convergence ◽  
Displacement Problem ◽  
Constraint Equations ◽  
Spatial Mechanisms ◽  
Finite Displacement ◽  
Special Points

In this paper, a new method for the numerical solution of the finite displacement problem in spatial mechanisms with revolute (R), cylindrical (C), spherical (S), and prismatic (P) pairs is presented. It is based on the use of special points’ coordinates as Lagrangian coordinates of the mechanism. The kinematic constraint equations are imposed as constant distances, areas, and volumes of segments, triangles, and tetrahedrons determined by those points. The system of nonlinear equations is solved via the Gauss-Newton variation of the Least Squares Method. Finally, three examples are presented in which the good convergence properties of the method can be seen.

Radial mass analysis of unstained STEM images of molluscan hemocyanins

1990 ◽  
Vol 48 (3) ◽  
pp. 810-811
Author(s):  
M.G. Hamilton ◽  
T.T. Herskovits ◽  
J.S. Wall
Keyword(s):  
Image Analysis ◽  
Hollow Cylinder ◽  
Electron Micrographs ◽  
Side View ◽  
Mass Analysis ◽  
Mass Measurements ◽  
Electron Microscopic ◽  
Transmission Electron ◽  
Transmission Electron Microscopic ◽  
Microscopic Studies

The hemocyanins of molluscs are aggregates of a cylindrical decameric subparticle that assembles into di-, tri-, tetra-, penta-, and larger multi-decameric particles with masses that are multiples of the 4.4 Md decamer. Electron micrographs of these hemocyanins typically show the particles with two profiles: circular representing the cylinder viewed from the end and rectangular representing the side-view of the hollow cylinder.The model proposed by Mellema and Klug from image analysis of a didecameric hemocyanin with the two decamers facing one another with collar (closed) ends outward fits the appearance of side-views of the negatively-stained cylinders. These authors also suggested that there might be caps at the ends. In one of a series of transmission electron microscopic studies of molluscan hemocyanins, Siezen and Van Bruggen supported the Mellema-Klug model, but stated that they had never observed a cap component. With STEM we have tested the end cap hypothesis by direct mass measurements across the end-views of unstained particles.

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