Design optimization of stiffened panels using finite element integrated force method

2018 ◽  
Vol 159 ◽  
pp. 99-109 ◽  
Author(s):  
A. Singh ◽  
F. Yang ◽  
R. Sedaghati
Keyword(s):  
Finite Element ◽  
Design Optimization ◽  
Stiffened Panels ◽  
Force Method ◽  
Integrated Force Method

Improved accuracy for finite element structural analysis via an integrated force method

1992 ◽  
Vol 45 (3) ◽  
pp. 521-542 ◽  
Author(s):  
S.N. Patnaik ◽  
D.A. Hopkins ◽  
R.A. Aiello ◽  
L. Berke
Keyword(s):  
Finite Element ◽  
Structural Analysis ◽  
Force Method ◽  
Integrated Force Method ◽  
Improved Accuracy

Three-dimensional structural analysis by the integrated force method

1996 ◽  
Vol 58 (5) ◽  
pp. 869-886 ◽  
Author(s):  
I. Kaljević ◽  
S.N. Patnaik ◽  
D.A. Hopkins
Keyword(s):  
Structural Analysis ◽  
Three Dimensional ◽  
Force Method ◽  
Integrated Force Method

Numerical Study of the Effect of Geometry and Boundary Conditions on the Collapse Behaviour of Stocky Stiffened Panels

2012 ◽  
Vol 154 (A2) ◽  
Keyword(s):  
Finite Element ◽  
Boundary Conditions ◽  
Ultimate Strength ◽  
Material Properties ◽  
Finite Element Modelling ◽  
Numerical Study ◽  
Fe Analysis ◽  
Stiffened Panels ◽  
Element Modelling ◽  
Geometric Configurations

This study aims at studying different configurations of the stiffened panels in order to identify robust configurations that would not be much sensitive to the imprecision in boundary conditions that can exist in experimental set ups. A numerical study is conducted to analyze the influence of the stiffener’s geometry and boundary conditions on the ultimate strength of stiffened panels under uniaxial compression. The stiffened panels with different combinations of mechanical material properties and geometric configurations are considered. The four types of stiffened panels analysed are made of mild or high tensile steel and have bar, ‘L’ and ‘U’ stiffeners. To understand the effect of finite element modelling on the ultimate strength of the stiffened panels, four types of FE models are investigated in FE analysis including 3 bays, 1/2+1+1/2 bays, 1+1 bays and 1 bay with different boundary conditions.

The development of design guidelines for integrally stiffened panels under compression using surrogate modelling

2017 ◽  
Vol 233 (3) ◽  
pp. 779-792
Author(s):  
Morteza Dezyani ◽  
Shahram Yousefi ◽  
Hossein Dalayeli ◽  
Hamid Frrokhfal
Keyword(s):  
Finite Element ◽  
Global Optimum ◽  
Initial Guess ◽  
Design Guidelines ◽  
Programming Algorithm ◽  
Preliminary Design ◽  
Finite Element Analyses ◽  
Surrogate Modelling ◽  
Stiffened Panels ◽  
Integrally Stiffened Panels

Preliminary design of stiffened compression panels used in aerospace structures is commonly based on the routine analytical and semi-empirical equations. Empirical charts are used for obtaining an initial guess to start the preliminary design process. In this paper, preliminary design guidelines for stiffened compression panels are developed based on the non-linear finite element analyses. Meanwhile, the process of design and optimization of the stiffened compression panels are carried out. Modelling phase is based on the finite element simulations of the structure. The surrogate modelling technique is employed to reduce the number of finite element analyses. An efficient technique is developed to find the global optimum of the surrogate model using sequential quadratic programming algorithm. The proposed approach is applied to two types of integrally stiffened panels. The final results are extracted as practical design guidelines which are suitable for preliminary design phase.

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