Elastic buckling and elasto-plastic collapse behaviors with torsion of a longitudinal stiffener under axial compression

2013 ◽  
pp. 319-328 ◽  
Author(s):  
D Yanagihara ◽  
M Fujikubo
Keyword(s):  
Axial Compression ◽  
Elastic Buckling ◽  
Plastic Collapse ◽  
Longitudinal Stiffener

A Study of Axial Compression in the ASME B&PV Code for Pipe Supports and Restraints

2016 ◽  
Author(s):  
Phillip E. Wiseman ◽  
Zara Z. Hoch
Keyword(s):  
Axial Compression ◽  
Pressure Vessel ◽  
Slenderness Ratio ◽  
Elastic Buckling ◽  
Allowable Stress ◽  
Linear Elastic ◽  
Division 1 ◽  
Asme Code ◽  
American Society ◽  
Allowable Stress Design

Axial compression allowable stress for pipe supports and restraints based on linear elastic analysis is detailed in the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section III, Division 1, Subsection NF. The axial compression design by analysis equations within NF-3300 are replicated from the American Institute of Steel Construction (AISC) using the Allowable Stress Design (ASD) Method which were first published in the ASME Code in 1973. Although the ASME Boiler and Pressure Vessel Code is an international code, these equations are not familiar to many users outside the American Industry. For those unfamiliar with the allowable stress equations, the equations do not simply address the elastic buckling of a support or restraint which may occur when the slenderness ratio of the pipe support or restraint is relatively large, however, the allowable stress equations address each aspect of stability which encompasses the phenomena of elastic buckling and yielding of a pipe support or restraint. As a result, discussion of the axial compression allowable stresses provides much insight of how the equations have evolved over the last forty years and how they could be refined.

scholarly journals Analysis of elastic buckling behavior of steel delta girders

2014 ◽  
Vol 3 (3) ◽  
pp. 372 ◽  
Author(s):  
Mohammadali Jafari Sahnehsaraei ◽  
Saeed Erfani
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bending Moment ◽  
Elastic Buckling ◽  
Beam Hardening ◽  
Element Analysis ◽  
Longitudinal Stiffener ◽  
Buckling Behavior ◽  
Buckling Failure ◽  
Economic Considerations

Given the widespread use of beam and plate in structures, it is essential to have a thorough understanding of girder behavior. According to buckling failure mode in plates, it is necessary to take measures in this regard. Delta stiffener is using this approach. Due to the lack of technical knowledge about these kinds of plate beam, it is necessary to find good geometric properties of the delta girder plates for both technically and economically optimization. Therefore, in this paper, by modeling and finite element analysis for simple girder (without Stiffener), beam hardening by longitudinal plate and beam using delta hardening behavior are examined under the effect of the bending moment. Finite element analysis of elastic buckling analysis is included. With the above analysis, the effect of longitudinal stiffener and Delta Girders in terms of economic considerations has been studied. Keywords: Elastic Buckling, Beam, Plate, Stiffener.

Plastic Collapse of Steep Conical Shells under Axial Compression

1972 ◽  
Vol 1 (3) ◽  
pp. 121-128 ◽  
Author(s):  
H. Ramsey
Keyword(s):  
Axial Compression ◽  
Kinematic Hardening ◽  
Yield Condition ◽  
Experimental Results ◽  
Plastic Collapse ◽  
Conical Shells ◽  
Plastic Behaviour ◽  
Perfectly Plastic ◽  
Collapse Mode ◽  
Axisymmetric Plastic

Analysis and experimental results are presented for two axisymmetric plastic collapse modes in steep, truncated conical shells under axial compression. The two collapse modes are strongly dependent on cone height and the boundary conditions. One collapse mode, which consists of flaring of the large end of the cone, can be analyzed satisfactorily on the basis of rigid-perfectly plastic behaviour. The Tresca sandwich-shell yield condition is used and close agreement is obtained with the experimental results. The other collapse mode is a local bulging of the small end. It is shown in the analysis that perfectly plastic behaviour cannot account for this collapse mode. Consideration of kinematic-hardening leads to a pseudo-elastic analysis of a uniform shell. The observed deformation is found to be due to buckling of the Shanley type. Rayleigh’s method is employed to obtain an estimate of a length parameter which characterizes the critical condition for buckling. Agreement with the experimental results is not very satisfactory, probably because a constant value for the tangent modulus was assumed.

Plastic Design of Steel Arches

1997 ◽  
Vol 1 (1) ◽  
pp. 1-9 ◽  
Author(s):  
N.S. Trahair ◽  
Y-L. Pi ◽  
M.J. Clarke ◽  
J.P. Papangelis
Keyword(s):  
Failure Modes ◽  
Elastic Buckling ◽  
Plastic Collapse ◽  
Elastic Analysis ◽  
Design Codes ◽  
Uniform Compression ◽  
Plane Failure ◽  
Collapse Analysis ◽  
Geometrical Imperfections ◽  
Support Conditions

The in-plane failure modes of steel arches range from the extremes of plastic collapse for stocky arches with significant bending actions to elastic buckling for slender arches in uniform compression. Between these extremes, failure involves an interaction between plastic collapse and elastic buckling which depends on the arch profile, support conditions, loading, and slenderness, and is influenced by geometrical imperfections and residual stresses. Few design codes give methods for designing steel arches against in-plane failure. The methods that are used are essentially based either on the buckling strengths of equivalent columns, or on the use of moment amplification or second-order elastic analysis and the attainment of a limiting stress. Any method based solely on elastic analysis and a limiting stress is necessarily conservative for stocky arches with negligible stability effects, since it ignores the often substantial redistributions that take place after first yield. This paper discusses the use of the method of plastic collapse analysis for the in-plane design of steel arches.

Nonlinear Elastic Buckling of CFRP Reinforced Steel Cylinders under Axial Compression

2012 ◽  
Vol 6 (8) ◽  
Author(s):  
Krishna Kumar Bhetwal ◽  
Seishi Yamada ◽  
Yukihiro Matsumoto ◽  
ames G. A. Croll
Keyword(s):  
Axial Compression ◽  
Elastic Buckling ◽  
Reinforced Steel ◽  
Nonlinear Elastic

The mechanics of two-dimensional cellular materials

1982 ◽  
Vol 382 (1782) ◽  
pp. 25-42 ◽  
Keyword(s):  
Mechanical Properties ◽  
Cell Walls ◽  
Cellular Materials ◽  
Elastic Buckling ◽  
Plastic Collapse ◽  
Two Dimensional ◽  
Linear And Nonlinear ◽  
Nonlinear Elastic

The mechanical properties (linear and nonlinear elastic and plastic) of two-dimensional cellular materials, or honeycombs, are analysed and compared with experiments. The properties are well described in terms of the bending, elastic buckling and plastic collapse of the beams that make up the cell walls.

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