scholarly journals Topology Optimization Design of Bus Body Structure Based on Altair-optiStruct

2014 ◽  
Author(s):  
Xiu-Chun WU ◽  
Wen-Qiang ZHENG ◽  
Pan ZHOU
Keyword(s):  
Topology Optimization ◽  
Optimization Design ◽  
Body Structure ◽  
Bus Body

Optimization Design of a Bus Body Frame

2012 ◽  
Vol 605-607 ◽  
pp. 600-603
Author(s):  
Feng Wang ◽  
Yong Hai Wu
Keyword(s):  
Optimization Design ◽  
Reference Value ◽  
Parametric Modeling ◽  
Operating Conditions ◽  
The Body ◽  
Body Structure ◽  
Total Quality ◽  
Body Frame ◽  
Nsga Ii ◽  
Bus Body

This paper selects a certain type of Golden Dragon bus body structure as the research object, by using ANSYS parametric modeling, and achieve optimization process through the ISIGHT software integration ANSYS. Choose the body frame minimum total quality as optimal objective; the average stress level is introduced to the objective function when the body frame is under the bending and twisting joint working conditions. According to the bus operating conditions, restrictions including strength, stiffness, and frequency of the body frame are put forward .NSGA-II algorithm is employed to optimize the design. The results showed that: 8.08% total mass reduction of Bus Body Structure. The NSGA-II method combined with finite element method this article uses has a certain reference value on the similar structure optimization design.

Optimization Analysis for Fuel Cell Bus Body Structure in Multi-Load Cases

2008 ◽  
Vol 44-46 ◽  
pp. 401-408
Author(s):  
Yun Kai Gao ◽  
P. Liu
Keyword(s):  
Fuel Cell ◽  
Optimization Design ◽  
Design Method ◽  
Orthogonal Design ◽  
Common Mechanism ◽  
Body Structure ◽  
Optimization Analysis ◽  
Mechanism Optimization ◽  
Experiment Method ◽  
Bus Body

In recent years, for the sake of energy saving and environment protection, lightweight body structure becomes the trend of vehicle development. Based on this objective, it is significant to make a research on optimization for the body structure. When structure optimization for the single work condition is carried out, the common mechanism optimization design method can provide the optimum result for certain condition according to the corresponding restriction and objective functions, whereas, the same variable has different variation trends in different conditions. In order to satisfy the requirements of the actual condition with multi-load cases optimization, synthesis analysis should be carried out by introducing weights for corresponding variables. First of all, the optimization section sizes of frame members of one semi-integral fuel cell bus body are analyzed respectively under four different load cases by applying common mechanism optimization design method. Furthermore, orthogonal design of experiment method is adopted to analyze the effect factor of the four optimization results in the synthesis optimization analysis and ascertain the integral optimum scheme. By analyzing and checking the bus body gained from the optimum synthesis scheme, it is confirmed that the synthesis optimization method for structure by adopting both common mechanism optimization design method and orthogonal design of experiment method can be used to carry out the optimization analysis under multi-load cases for bus body frame and the lightweight of bus framework, on the premise of ensuring the bus body performance index such as strength, stiffness and mode.

Topology Optimization Design of High Pressure Storage Tank Structure

2012 ◽  
Vol 430-432 ◽  
pp. 828-833
Author(s):  
Qiu Sheng Ma ◽  
Yi Cai ◽  
Dong Xing Tian
Keyword(s):  
Finite Element ◽  
High Pressure ◽  
Topology Optimization ◽  
Storage Tank ◽  
Optimization Design ◽  
Influence Factors ◽  
Element Model ◽  
Design Variables ◽  
Calculation Results ◽  
Pressure Storage

In this paper, based on ANSYS the topology optimization design for high pressure storage tank was studied by the means of the finite element structural analysis and optimization. the finite element model for optimization design was established. The design variables influence factors and rules on the optimization results are summarized. according to the calculation results the optimal design result for tank is determined considering the manufacturing and processing. The calculation results show that the method is effective in optimization design and provide the basis to further design high pressure tank.

Topology Optimization Using Node-Based Smoothed Finite Element Method

2015 ◽  
Vol 07 (06) ◽  
pp. 1550085 ◽  
Author(s):  
Z. C. He ◽  
G. Y. Zhang ◽  
L. Deng ◽  
Eric Li ◽  
G. R. Liu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Topology Optimization ◽  
Optimization Design ◽  
Solid Mechanics ◽  
Optimality Criteria ◽  
Topology Optimization Problem ◽  
Design Variables ◽  
Smoothed Finite Element Method ◽  
Element Method

The node-based smoothed finite element method (NS-FEM) proposed recently has shown very good properties in solid mechanics, such as providing much better gradient solutions. In this paper, the topology optimization design of the continuum structures under static load is formulated on the basis of NS-FEM. As the node-based smoothing domain is the sub-unit of assembling stiffness matrix in the NS-FEM, the relative density of node-based smoothing domains serves as design variables. In this formulation, the compliance minimization is considered as an objective function, and the topology optimization model is developed using the solid isotropic material with penalization (SIMP) interpolation scheme. The topology optimization problem is then solved by the optimality criteria (OC) method. Finally, the feasibility and efficiency of the proposed method are illustrated with both 2D and 3D examples that are widely used in the topology optimization design.

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