Adaptive XIGA shakedown analysis for problems with holes

2022 ◽  
pp. 104502
Author(s):  
Keke Li ◽  
Tiantang Yu ◽  
Tinh Quoc Bui
Keyword(s):  
Shakedown Analysis

Shakedown analysis of elasto-plastic structures subjected to external loading and temperature variation

1995 ◽  
Vol 16 (8) ◽  
pp. 791-799
Author(s):  
Du Sentian ◽  
Liu Hanbing ◽  
Chen Suhuan ◽  
Lian Jianshe
Keyword(s):  
Temperature Variation ◽  
External Loading ◽  
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.

The Equilibrium Cell-Based Smooth Finite Element Method for Shakedown Analysis of Structures

2019 ◽  
Vol 16 (05) ◽  
pp. 1840013 ◽  
Author(s):  
P. L. H. Ho ◽  
C. V. Le ◽  
T. Q. Chu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Optimization Problem ◽  
Conic Programming ◽  
Equilibrium Equations ◽  
Shakedown Analysis ◽  
Numerical Examples ◽  
Elastic Stresses ◽  
Gauss Points ◽  
Element Method

This paper presents a novel equilibrium formulation, that uses the cell-based smoothed method and conic programming, for limit and shakedown analysis of structures. The virtual strains are computed using straining cell-based smoothing technique based on elements of discretized mesh. Fictitious elastic stresses are also determined within the framework of finite element method (CS-FEM)-based Galerkin procedure, and equilibrium equations for residual stresses are satisfied in an average sense at every cell-based smoothing cell. All constrains are imposed at only one point in the smoothing domains, instead of Gauss points as in a standard FEM-based procedure. The resulting optimization problem is then handled using the highly efficient solvers. Various numerical examples are investigated, and obtained solutions are compared with available results in the literature.

scholarly journals Shakedown analysis of thick cylinders with multiple radial openings

2016 ◽  
Vol 149 ◽  
pp. 012198
Author(s):  
A K Singh ◽  
I A Khan ◽  
K Sharma ◽  
R N Sen ◽  
K N Vyas
Keyword(s):  
Shakedown Analysis
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