scholarly journals Optimal design of 3d frame structures taking into account the stress and multiple natural frequency constraints

2016 ◽  
Vol 61 (1) ◽  
pp. 74-81 ◽  
Author(s):  
O.A. Sergeyev ◽  
V.G. Kiselev ◽  
S.A. Sergeyeva
Keyword(s):  
Optimal Design ◽  
Natural Frequency ◽  
Frame Structures ◽  
Frequency Constraints

Non-parametric free-form optimal design of frame structures in natural frequency problem

2016 ◽  
Vol 117 ◽  
pp. 334-345 ◽  
Author(s):  
Masatoshi Shimoda ◽  
Tomohiro Nagano ◽  
Takashi Morimoto ◽  
Yang Liu ◽  
Jin-Xing Shi
Keyword(s):  
Optimal Design ◽  
Natural Frequency ◽  
Free Form ◽  
Frame Structures ◽  
Non Parametric

Optimal Design of a Scroll Case with Natural Frequency Constraints

2011 ◽  
Vol 94-96 ◽  
pp. 1719-1722
Author(s):  
Xin Li Bai ◽  
Gui Rong Liu ◽  
Song An Zhang
Keyword(s):  
Optimal Design ◽  
Natural Frequency ◽  
Analytical Method ◽  
Mass Matrix ◽  
Program System ◽  
Structural Dynamic ◽  
Frequency Constraints ◽  
Frequency Sensitivity ◽  
Scroll Case ◽  
Calculation Results

In this paper, sensitivity formula with analytical method is derived for calculating structural natural frequency, and the partial derivative of plate element stiffness matrix and mass matrix with respect to design variables are gained respectively. Computer programs for computing frequency sensitivity with analytical method are developed. And combining it with large finite element structural analysis software ADINA, the optimal design software based on genetic algorithms, a structural dynamic optimization program system is constituted for computing structural natural frequency sensitivity with analytical method. Finally, the program system is applied to the optimal design of a turbine scroll case of a hydropower station (taking into account the natural frequency constraints). Calculation results show that analytical method presented in the paper is of higher computational precision, good stability, convenient to use, and can be popularized. Calculation results obtained the approval of client and used in real engineering.

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