An improved fully stressed design algorithm for plate/shell structures

1990 ◽  
Vol 2 (4) ◽  
pp. 233-237 ◽  
Author(s):  
H. Miura

1971 ◽  
Vol 8 (9) ◽  
pp. 683-688 ◽  
Author(s):  
W. LANSING ◽  
W. DWYER ◽  
R. EMERTON ◽  
E. RANALLI


1966 ◽  
Vol 92 (5) ◽  
pp. 237-360
Author(s):  
Dhanjoo N. Ghista




1976 ◽  
Vol 2 (1) ◽  
pp. 3-15 ◽  
Author(s):  
P. BARTHOLOMEW ◽  
A. J. MORRIS




2012 ◽  
Vol 09 (03) ◽  
pp. 1250035 ◽  
Author(s):  
FATİH MEHMET ÖZKAL ◽  
HABİB UYSAL

Topology optimization and strut-and-tie model methods have a remarkable success in the detailing of reinforced concrete structures, especially for discontinuity regions of the beam–column connections. However, it has always been complicated to determine an optimum design throughout all the offers of an optimization process, since it is not obvious which of the decision variables should be considered in order to select the optimum design. This paper presents the application of a new selection method on topology optimization and strut-and-tie modeling of the beam–column connections. A performance index formulation assists the selection of the optimum design from the process by considering the fully stressed design concept unlikely other performance indices. Former indices take just one of the structural criterions into consideration such as stress, strain energy, displacement, etc. The efficiency and capability of the approach have been demonstrated by the comparison of element removal criterions and different parameter values on several bidimensional design examples.



Author(s):  
Kai Xue ◽  
Lei Li ◽  
Qiu Hong Li

A novel design method for stiffener layout of plate and shell structures is proposed in this paper. The method is inspired by the morphogenesis mechanism of dicotyledonous venation which is featured by hierarchy and functional adaptivity. It is expected that a optimal stiffener layout can be gradually achieved if the stiffeners extend by obeying a similar growth rule as the venation. Starting from the so called “seeds”, the stiffeners grow and branch off towards the direction that optimizes the structural performance. And the stiffeners with the minimum effectiveness to the structural performance are degenerated simultaneously. During the design process, the relative density of each element is treated as the design variable. The growth and degeneration of the stiffeners are determined by the nodal and elemental sensitivity numbers respectively. The design algorithm is programmed in Python and integrated with Abaqus software which is used as the FEA preprocessor and solver. To validate the effectiveness of the proposed method, it is applied to design the stiffener layouts of some typical structures with the objective of maximizing the overall stiffness with a volume constraint.



1974 ◽  
Vol 18 (02) ◽  
pp. 85-95
Author(s):  
D. Finifter

Finite-element analysis was used in the design of an unconventional tanker web frame which satisfies certain requirements stipulated by an isolated ballast system. The weight of the web frame was then minimized using an optimality criterion based on a fully stressed design. A double iteration procedure was developed which allowed for the efficient use of the optimization program in conjunction with the finite-element analysis. The reduction in the weight of the web frame is dependent on the minimum allowed plate thickness as shown in the results of the paper.



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