Stability Analysis of Rigid Plastic Structures at the Yield-Point Load

1976 ◽  
pp. 106-116
Author(s):  
M. K. Duszek
Keyword(s):  
Stability Analysis ◽  
Yield Point ◽  
Point Load ◽  
Rigid Plastic

Stable and Uostable States of Rigid-Plastic Frames at the Yield-Point Load

1976 ◽  
Vol 4 (1) ◽  
pp. 33-47 ◽  
Author(s):  
Maria K. Duszek ◽  
Aritoni Sawczuk
Keyword(s):  
Yield Point ◽  
Point Load ◽  
Rigid Plastic

Rigid plastic stability analysis for slope including thin weak layer

2011 ◽  
Vol 6 (2) ◽  
pp. 191-200 ◽  
Author(s):  
Takashi HOSHINA ◽  
Satoru OHTSUKA ◽  
Koichi ISOBE
Keyword(s):  
Stability Analysis ◽  
Rigid Plastic ◽  
Weak Layer ◽  
Plastic Stability

The yield point load of a conical shell

1969 ◽  
Vol 11 (1) ◽  
pp. 129-143 ◽  
Author(s):  
Richard H. Lance ◽  
Chen-hsiung Lee
Keyword(s):  
Yield Point ◽  
Conical Shell ◽  
Point Load

Finite Deformations of a Rigid Perfectly Plastic Arch

1962 ◽  
Vol 29 (3) ◽  
pp. 549-553 ◽  
Author(s):  
E. T. Onat ◽  
L. S. Shu
Keyword(s):  
Closed Form ◽  
Yield Point ◽  
Finite Deformation ◽  
Closed Form Solution ◽  
Form Solution ◽  
Finite Deformations ◽  
Deformation History ◽  
Rigid Plastic ◽  
Perfectly Plastic ◽  
History Of

The quasi-static postyield deformation of a rigid-plastic arch in the presence of geometry changes is considered. The problem is formulated in terms of a series of boundary-value problems concerned with rates of stress and velocities. In the present simple case, the consideration of the rate problem associated with the yield-point state of the structure enables one to construct a closed-form solution which describes the entire deformation history of the arch. However, the principal aim of the present study is to stress the central role played by the rate problem in the investigation of the finite deformation of structures.

Yield Point Load of an Annular Plate

1959 ◽  
Vol 26 (3) ◽  
pp. 454-455
Author(s):  
Philip G. Hodge
Keyword(s):  
Yield Point ◽  
Annular Plate ◽  
Point Load ◽  
Uniform Load ◽  
Simply Supported

Abstract The yield point load is computed for an annular plate, simply supported at its inner and outer edges and subjected to a uniform load. A previously published solution is shown to be incorrect.

Strain Analysis of Supporting Profile Vulcanizing Press

2018 ◽  
Vol 931 ◽  
pp. 200-206
Author(s):  
Sergej I. Evtushenko ◽  
Vladimir E. Fedorchuk ◽  
Anastasia S. Alexeeva ◽  
Boris A. Chernyckhovsky
Keyword(s):  
Yield Point ◽  
Strain Analysis ◽  
Calculation Model ◽  
Point Load ◽  
Process Equipment ◽  
Ansys Software ◽  
Preliminary Calculation ◽  
Stress Strain ◽  
Limiting State ◽  
Residual Deformations

The article is devoted research of process equipment in the simulation of the stress-strain state of load-bearing elements in the environment of ANSYS. The obtained results are consistent with the data of preliminary calculations and confirm the performance of device. The device for connecting the ends of a conveyor fabric-rubber belt by a vulcanization method is a set of ten segments. At the stage of preliminary calculation stress-strain properties of supporting profiles vulcanizing press were determined by using SCAD software. Point load of hydraulic cylinders is transmitted on profiles in accordance with terms of reference. Strength calculation supporting profile in ANSYS software was carried out using Finite Element Method. The segment of the device under consideration is symmetrical with respect to two planes. Therefore, it was decided to simplify the calculation model using the capabilities of the ANSYS software, namely using the "Symmetry" modifier. This simplification reduces the requirements for computing power of the computer, which, in turn, allows to build a better mesh. Mesh is constructed mainly from eight-node volumetric elements of regular shape. Analysis of the supporting profile in ANSYS software confirmed the results of preliminary settlements. There are stresses in the dangerous sections of the upper profile exceeding the yield point. Despite this, during unloading, residual deformations in the profile are absent, since for the most part of the profile length in the sections there is no limiting state, that is, the stresses do not reach the yield point.

Nonuniqueness in Contained Plastic Deformation

1980 ◽  
Vol 47 (2) ◽  
pp. 273-277 ◽  
Author(s):  
P. G. Hodge ◽  
D. L. White
Keyword(s):  
Plastic Deformation ◽  
Boundary Value Problem ◽  
Yield Point ◽  
Displacement Field ◽  
Point Load ◽  
Point Of View ◽  
Computational Point ◽  
Plastic Structure ◽  
Perfectly Plastic ◽  
Elastic Perfectly Plastic

It is well known that in a well-defined load-controlled boundary-value problem for an elastic/perfectly-plastic structure the displacements are unique if the structure is everywhere elastic, and they are not unique at the yield-point load when the structure becomes a mechanism. The present paper is concerned with the range of contained plastic deformation between these two extremes. Several examples are given in which more than one displacement field exists for loads less than the yield-point load. The significance of this phenomenon is commented on from a physical, mathematical, and computational point of view.

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