Journal ArticleDOI
Damage tolerance based shape design of a stringer cutout using evolutionary structural optimisation
TLDR
In this article, a modified evolutionary structural optimisation (ESO) algorithm for optimal design of a stringer cutout used in many pressured fuselages of transport aircrafts is studied.About:
This article is published in Engineering Failure Analysis.The article was published on 2007-01-01. It has received 11 citations till now. The article focuses on the topics: Stress intensity factor & Damage tolerance.read more
Citations
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Optimal topology design of industrial structures using an evolutionary algorithm
Raj Das,Rhys Jones,Yi Min Xie +2 more
TL;DR: In this paper, a modified Evolutionary Structural Optimization (ESO) algorithm for optimal design of topologies for complex structures is presented, where a new approach for adaptively controlling the material elimination and a "gauss point average stress" is used as the ESO criterion in order to reduce the generation of checkerboard patterns in the resultant optimal topologies.
Journal ArticleDOI
Damage tolerance based design optimisation of a fuel flow vent hole in an aircraft structure
Rajarshi Das,Rhys Jones +1 more
TL;DR: This paper investigates the design optimisation of a fuel flow vent hole located in the wing pivot fitting (WPF) of an F-111 aircraft assuming a damage tolerance design philosophy and achieves a considerable enhancement in fatigue performance without precisely identifying the local/global optimum solution.
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Fatigue life enhancement of structures using shape optimisation
Rajarshi Das,Rhys Jones +1 more
TL;DR: In this article, the authors proposed a new approach for shape optimisation with fatigue life as the design objective, which leads to the generation of a ‘near uniform’ fatigue critical surface.
Journal ArticleDOI
Development of a 3D Biological method for fatigue life based optimisation and its application to structural shape design
Rajarshi Das,Rhys Jones +1 more
TL;DR: In this paper, a gradient-less 3D Biological algorithm that uses fatigue life as the design objective for shape optimisation of damage tolerant structures is presented, which is used for optimisation with numerous 3D cracks located along the structural boundary.
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Characteristics of the design surface of damage tolerance parameters and their relation to shape optimisation
Rajarshi Das,Rhys Jones +1 more
TL;DR: In this paper, the design spaces for residual strength and fatigue life for different structural configurations are evaluated to demonstrate the utilities of design space exploration for damage tolerance design optimisation, which is illustrated using the problem of the optimum design of a cutout shape with boundary cracks under biaxial load.
References
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Book
Evolutionary Structural Optimization
Yi Min Xie,Grant P. Steven +1 more
TL;DR: ESO as discussed by the authors is a computer program that performs structural optimization for multiple load cases and multiple support environments, including Pin-and Rigid-Jointed Frames and Structures with Stiffness or Desplacement Contraints.
Journal ArticleDOI
Estimations of stress intensity factors for small cracks at notches
Daniel Kujawski,Daniel Kujawski +1 more
TL;DR: In this article, a simple method for determining the stress intensity factors for small notch-emanating cracks is presented, which can be used for a variety of central and edge notches with through-thickness of semi-elliptical cracks.
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Structural optimisation with fracture strength constraints
TL;DR: In this paper, a new biological algorithm for the optimal design of structural components with fracture, i.e., residual strength constraints, is presented. But this algorithm is not suitable for the case of a body without an initial flaw and the optimal solution for a body with an initial fault.
Journal ArticleDOI
Design of structures for optimal static strength using ESO
TL;DR: In this article, a modified evolutionary structural optimisation (ESO) algorithm for optimal design of damage tolerant structures is presented, which uses fracture strength as the design objective and allows for cracks to be located along the entire structural boundary.
Journal ArticleDOI
Optimisation of damage tolerant structures using a 3D biological algorithm
TL;DR: In this article, a 3D biological algorithm that uses fracture parameters as the design criteria was presented for shape optimisation of structures with fracture strength as a design objective, and it was found that the optimum hole shapes were approximately elliptical with the aspect ratios being dependent on crack sizes, structural geometry and boundary conditions.