The impact torsional buckling for the rigid plastic cylindrical shell

1993 ◽  
Vol 14 (8) ◽  
pp. 693-698 ◽  
Author(s):  
Wang De-yu ◽  
Zhang Shan-yuan ◽  
Yang Gui-tong
Keyword(s):  
Cylindrical Shell ◽  
Rigid Plastic ◽  
Torsional Buckling ◽  
Plastic Cylindrical Shell ◽  
The Impact

Displacements in an Elastic-Plastic Cylindrical Shell

1956 ◽  
Vol 23 (1) ◽  
pp. 73-79
Author(s):  
P. G. Hodge
Keyword(s):  
Cylindrical Shell ◽  
Elastic Limit ◽  
Radial Pressure ◽  
Collapse Load ◽  
Rigid Plastic ◽  
Elastic Plastic ◽  
Plastic Cylindrical Shell ◽  
Theoretical Results ◽  
Reinforced Cylindrical Shell ◽  
Plastic Theory

Abstract A reinforced cylindrical shell which is loaded with a uniform excess external radial pressure can support a load considerably greater than the elastic limit. While several recent investigations have been concerned with finding the collapse load of the shell, no attention has been paid to the corresponding deformations. Although rigid-plastic theory is sufficient to determine the collapse load, the more complex elastic-plastic theory must be used in investigating the displacements. In the present paper the elastic-plastic problem is stated for an ideal sandwich shell, and the stresses and deformations are computed for a particular example. Since the computations are found to be quite laborious, an approximate technique, applicable to all shells, is developed. The paper closes with some comments on the relation between the theoretical results and the behavior to be expected in real shells.

Carrying Capacity of an Elastic-Plastic Cylindrical Shell With Linear Strain-Hardening

1958 ◽  
Vol 25 (1) ◽  
pp. 79-85
Author(s):  
P. G. Hodge ◽  
S. V. Nardo
Keyword(s):  
Cylindrical Shell ◽  
Carrying Capacity ◽  
Circular Cylindrical Shell ◽  
Maximum Load ◽  
Isotropic Hardening ◽  
Linear Strain ◽  
Minimum Potential Energy ◽  
Rigid Plastic ◽  
Plastic Cylindrical Shell ◽  
Minimum Potential

Abstract The approximate capacity of a thin-walled closed circular cylindrical shell, simply supported at each end and subjected to a uniform hydrostatic pressure, is determined. Elastic and plastic strains are considered, and the latter are assumed to follow a linear law of isotropic hardening. The principle of minimum potential energy is used to determine an approximate solution for the stress resultants, displacements, and maximum load. In an example, it is found that the carrying capacity is considerably lower than that predicted by either rigid-plastic theory or elasticity theory.

Interaction of a Circular Cylindrical Shell with an Elastic Foundation

2018 ◽  
Vol 878 ◽  
pp. 3-7
Author(s):  
Vladimir I. Andreev ◽  
Andrey N. Leontiev
Keyword(s):  
Cylindrical Shell ◽  
Circular Cylindrical Shell ◽  
Rectangular Cross Section ◽  
Relative Length ◽  
Longitudinal Axis ◽  
Winkler Foundation ◽  
Total Moment ◽  
Relative Rigidity ◽  
Vertical Walls ◽  
The Impact

The problem of static analysis of a circular cylindrical shell, which is located on elastic Winkler foundation and reinforced by the longitudinal edges are considered. There is rib stiffness of rectangular cross section. Exposure is represented evenly distributed along the longitudinal axis forces. The forces acting on the edges of the rigidity of the upper structure. Agreed that the ends of the envelope is flat, vertical walls, giving the contour of the absolute rigidity in the transverse direction and does not prevent the longitudinal displacement of points of the envelope. To solve the problem, the total moment theory of circular cylindrical shell was used. To implement the proposed algorithm is the calculation of computer program. With the help of the program is executed a number of examples of calculation. In these examples, analyze the impact of stress on the shell of such factors as the relative length and thickness, angle mortar shell, the value of the relative rigidity of airborne elements and other.

Design capacities of joints with laterally loaded nails

2001 ◽  
Vol 28 (2) ◽  
pp. 282-290 ◽  
Author(s):  
Ian Smith ◽  
Steven T Craft ◽  
Pierre Quenneville
Keyword(s):  
Limit State ◽  
Ultimate Limit State ◽  
Joint Models ◽  
Yield Model ◽  
Rigid Plastic ◽  
Double Shear ◽  
Modelling Assumptions ◽  
Ultimate Limit State Design ◽  
Laterally Loaded ◽  
The Impact

Capacities of joints with laterally loaded nails may be predicted using "European yield" type models (EYMs) with various levels of complexity. EYMs presume that a nail and the wood on which it bears exhibit a rigid–plastic stress–strain response. Consideration is given in this paper to the "original" model published by K.W. Johansen in 1949, an empirical approximation proposed by L.R.J. Whale and coworkers in 1987, and a curtailed and "simplified" model proposed by H.J. Blass and coworkers in 1999. Predictions from the various EYMs are compared with experimentally determined ultimate capacities of single and double shear joints. Experiments covered a range of combinations of member thicknesses and two nail sizes. The impact of modelling assumptions is illustrated in the context of the Canadian timber design code. Suggestions are made regarding the necessary level of complexity for nailed joint models used in design.Key words: timber, joints, nails, yield model, ultimate limit state, design.

Sign in / Sign up

Export Citation Format

Share Document