PROBLEM CLASSIFICATION AND BASIC TECHNIQUES IN ANALYSIS OF INELASTIC STABILITY OF PLATES

In order to expedite the advancement of plastic analysis of plates, the problem of buckling is categorized into various classes and relevant methods of analysis are proposed. This is done by observing magnitudes of strains measured in recent tests on box girders and stiffened plates. Three classes of problems are recognized: yielding failure, elasto-plastic buckling and plastic collapse. The first can be analysed by elastic theory using a fibre-yield criterion as a check. For elasto-plastic buckling, since the criteria based on fully plastic sections are found to err on the unsafe side, an improved yet simpler criterion (termed the lower yield criterion) is proposed. For the study of plastic collapse, simple formulae based on large strains are derived. This report is mainly concerned with the theory and application of the lower yield criterion. An example of a plate in compression is given to demonstrate the predicted extent of plasticity at collapse. /Author/TRRL/

• Corporate Authors:

  Transport and Road Research Laboratory

  Environment Division, Old Wokingham Road
  Crowthorne RG11 6AU, Berkshire,   England 
• Authors:
  • Yam, LCP
• Publication Date: 1974

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 23 p.

Subject/Index Terms

• TRT Terms: Analysis; Box girders; Buckling; Collapse; Creep; Deformation; Elasticity (Mechanics); Failure; Mathematical models; Planning; Plasticity; Slabs; Stability (Mechanics); Stability analysis; Stiffeners (Plates); Strain (Mechanics); Structural plates
• Uncontrolled Terms: Plates
• Old TRIS Terms: Stiffener; Strains; Yield
• ITRD Terms: 6471: Analysis (math); 3474: Box girder; 5522: Buckling; 4732: Creep (mater); 5595: Deformation; 5912: Elasticity; 5520: Failure; 6473: Mathematical model; 5922: Plasticity; 3491: Slab; 5930: Stability; 3435: Stiffener (bridge)
• Subject Areas: Bridges and other structures; Design; Highways; Planning and Forecasting; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00096503
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: TRRL 657 Monograph
• Files: ITRD, TRIS, ATRI
• Created Date: Jul 15 1975 12:00AM