Recent Progress on Lower-Bound Shakedown Analysis of Road Pavements

2017 ◽  
pp. 129-142
Author(s):  
J. Wang ◽  
S. Liu ◽  
H.S. Yu
Keyword(s):  
Lower Bound ◽  
Recent Progress ◽  
Shakedown Analysis

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 lower bound formulation for shakedown analysis

2004 ◽  
pp. 303-307
Author(s):  
A Lyamin ◽  
S Sloan ◽  
K Krabbenhoft ◽  
M Hjiaj
Keyword(s):  
Lower Bound ◽  
Shakedown Analysis

Boundary element methods for lower bound limit and shakedown analysis

2004 ◽  
Vol 28 (8) ◽  
pp. 905-917 ◽  
Author(s):  
Xiaofeng Zhang ◽  
Yinghua Liu ◽  
Zhangzhi Cen
Keyword(s):  
Lower Bound ◽  
Boundary Element ◽  
Boundary Element Methods ◽  
Shakedown Analysis

Numerical lower bound shakedown analysis of engineering structures

2011 ◽  
Vol 200 (41-44) ◽  
pp. 2828-2839 ◽  
Author(s):  
Jaan-Willem Simon ◽  
Dieter Weichert
Keyword(s):  
Lower Bound ◽  
Engineering Structures ◽  
Shakedown Analysis

Shakedown Analysis Combined With the Problem of Heat Conduction

2010 ◽  
Author(s):  
Jaan-Willem Simon ◽  
Min Chen ◽  
Dieter Weichert
Keyword(s):  
Heat Conduction ◽  
Lower Bound ◽  
Heat Exchangers ◽  
Thermal Loading ◽  
Heat Conduction Problem ◽  
Simplified Model ◽  
Interior Point Algorithm ◽  
Engineering Systems ◽  
Tube Sheet ◽  
Shakedown Analysis

This paper deals with the computation of the shakedown load of engineering systems subjected to varying loads. In particular, we focus on thermal loading and the resulting heat conduction problem in combination with shakedown analysis. The analysis is based on the lower bound shakedown theorem by Melan. The calculation is carried out by use of an interior-point algorithm. Emphasis is placed on the presentation of theoretical derivations whereas numerical aspects are out of scope and will be presented elsewhere. The methodology is illustrated by the application to a simplified model of a tube sheet in heat exchangers.

Progress in Lower Bound Direct Methods

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
D. Weichert ◽  
A. Hachemi ◽  
J. Simon
Keyword(s):  
Lower Bound ◽  
Limit Analysis ◽  
Pressure Vessel ◽  
Interior Point ◽  
Numerical Scheme ◽  
Recent Progress ◽  
Interior Point Methods ◽  
Direct Methods ◽  
Theoretical Foundations

The paper reports on recent progress in numerical shakedown and limit analysis based on Melan's lower bound shakedown theorem. After explaining the theoretical foundations of their approach, the authors describe in detail the numerical scheme, in particular the underlying optimization via interior point methods. Numerous examples mostly related to pressure vessel technology are presented, illustrating the potential of the method.

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