scholarly journals Finite element lower bound “yield line” analysis of isotropic slabs using rotation-free elements

2013 ◽  
Vol 53 ◽  
pp. 38-51 ◽  
Author(s):  
A. Salam Al-Sabah ◽  
Holger Falter
Keyword(s):  
Finite Element ◽  
Lower Bound ◽  
Yield Line ◽  
Line Analysis

Skew composite bridges — analyses for ultimate load

1995 ◽  
Vol 22 (6) ◽  
pp. 1092-1103 ◽  
Author(s):  
Alaa Helba ◽  
John B. Kennedy
Keyword(s):  
Finite Element ◽  
Ultimate Load ◽  
Ultimate Limit State ◽  
Yield Line ◽  
Skew Bridges ◽  
Truck Loading ◽  
Composite Bridges ◽  
Composite Bridge ◽  
Bridge Models ◽  
Line Analysis

The ultimate limit state design for composite skew bridges with slab-on-I-steel girders requires a reliable prediction of their ultimate load capacity. In this paper, the results from a yield-line analysis of prototype composite bridges subjected to OHBDC truck loading are presented and compared with the results from a nonlinear finite element analysis of such prototype skew bridges. The favourable comparison between the two sets of results indicates that the collapse loads of skew composite bridges can be reliably and readily predicted by the yield-line method of analysis. Equations useful for the design and analysis of skew bridges are given. The experimental results from five composite bridge models tested to failure verify and substantiate the analyses. Results of the ultimate loads of six other skew composite bridge models with punched-to-failure deck slabs are also shown. A general and simplified method relating OHBDC truck loading to the collapse load predicted using the yield-line analysis is presented. Key words: analysis, bridges, composite, design, failure patterns, finite element, models, skew, yield-line.

Recent Advances in Lower Bound Shakedown Analysis

2009 ◽  
Author(s):  
Dieter Weichert ◽  
Abdelkader Hachemi
Keyword(s):  
Finite Element ◽  
Lower Bound ◽  
Process Engineering ◽  
Operating Conditions ◽  
Structural Elements ◽  
Shakedown Analysis ◽  
Material Models ◽  
Practical Engineering ◽  
Safe Operating ◽  
New Algorithms

The special interest in lower bound shakedown analysis is that it provides, at least in principle, safe operating conditions for sensitive structures or structural elements under fluctuating thermo-mechanical loading as to be found in power- and process engineering. In this paper achievements obtained over the last years to introduce more sophisticated material models into the framework of shakedown analysis are developed. Also new algorithms will be presented that allow using the addressed numerical methods as post-processor for commercial finite element codes. Examples from practical engineering will illustrate the potential of the methodology.

A Study of Wall Ironing by the Finite Element Technique

1978 ◽  
Vol 100 (1) ◽  
pp. 31-36 ◽  
Author(s):  
E. I. Odell
Keyword(s):  
Finite Element ◽  
Lower Bound ◽  
Cone Angle ◽  
Reduction Ratio ◽  
Operating Parameters ◽  
Finite Element Technique ◽  
Elastic Plastic ◽  
Maximum Reduction ◽  
Load Displacement ◽  
Element Technique

Wall ironing has been analyzed using an elastic-plastic finite element technique. The effects that the ironing ring semi-cone angle and friction have on the maximum reduction ratio are studied in detail. Stress contours are given for a typical set of operating parameters. Several ram load/displacement curves are provided and compared with upper and lower bound loads.

Yield Line Analysis of Square Footings

1979 ◽  
Vol 105 (11) ◽  
pp. 1355-1359
Author(s):  
Satish C. Jain ◽  
Kiran K. Singh ◽  
Prabhas K. Maity
Keyword(s):  
Yield Line ◽  
Line Analysis
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