Optimization Design of the Gas Station Roof Based on Analysis

2011 ◽  
Vol 243-249 ◽  
pp. 6188-6191
Author(s):  
Jin Long Wang
Keyword(s):  
Cross Section ◽  
Optimization Design ◽  
Mathematic Model ◽  
Actual Condition ◽  
Analysis Method ◽  
Grid Structure ◽  
Finite Element Software ◽  
Minimum Cross Section ◽  
Optimum Analysis ◽  
Gas Station

A mathematic model on the optimum design of the gas station roof was established, and made an optimization to its grid structure parameters by the finite element software ANSYS.According to the actual condition of work and on the premise of meeting the need, the minimum cross section of the grid structure was determined. The results indicate that materials and cost can evidently decreased by optimum analysis method.

Optimization Methods and Application Research of Stator Cooling Pipeline in High-Speed Grinding Wheel System

2011 ◽  
Vol 199-200 ◽  
pp. 1579-1585 ◽  
Author(s):  
Bei Zhi Li ◽  
Rui Jin Feng ◽  
Jian Guo Yang ◽  
Zhou Ping Wu
Keyword(s):  
Cross Section ◽  
Wall Thickness ◽  
High Speed ◽  
Optimization Design ◽  
Heat Dissipation ◽  
Simulation Analysis ◽  
Optimization Methods ◽  
Grinding Wheel ◽  
Finite Element Software ◽  
High Speed Grinding

The paper aims at the problem of heat dissipation on the surface of stator of the Synchronous Motorized Spindle system, researching the influence which the shape of the cooling pipe’s cross-section and the wall thickness have on heat transfer. This paper presents the optimization design methods to confirm the best size and shape of cooling pipe’s cross-section and the optimal wall thickness, using MATLAB software to optimize calculation and NASTRAN finite element software for simulation analysis, and the ideal temperature of distribution is got, which is better than the result gained by the experience. It provides theory basis for the design of cooling pipe in practice.

Optimal Design of Spatial Grid Structure Using Group Search Optimization

2011 ◽  
Vol 243-249 ◽  
pp. 6044-6048 ◽  
Author(s):  
Bing Yuan ◽  
Feng Ming Ren ◽  
Gen Quan Zhong ◽  
Jing Zhou
Keyword(s):  
Optimization Design ◽  
Element Model ◽  
Optimization Methods ◽  
Grid Structure ◽  
Optimization Analysis ◽  
Search Optimization ◽  
Spatial Grid ◽  
The One ◽  
Group Search ◽  
Design Proposal

An economic and safety design proposal of the spatial grid structure is very difficult to find according to traditional design method.The group search optimization and its improved algorithm are applied in optimization design of a spatial grid structure in this paper. In this paper the finite element model of the spatial grid structure is firstly built through the platform of ANSYS. Then based on the parameterized programme language ADPL of ANSYS ,the group search optimization (GSO) and the quick group search optimization(QGSO ) are compiled ,the optimization analysis of the spatial grid structure are carried out. Finally, the optimization results and the optimization one from ANSYS are compared. It show that the optimization methods hereinbefore are feasible and the design proposals of them are better than the one of ANSYS.

Minimum Mould Exit Shell Thickness of Round Blooms for Peritectic Steel Casting

2011 ◽  
Vol 421 ◽  
pp. 179-183 ◽  
Author(s):  
Li Gen Sun ◽  
Hui Rong Li ◽  
Jia Quan Zhang
Keyword(s):  
Cross Section ◽  
Shell Thickness ◽  
Elevated Temperatures ◽  
Continuous Casting Machine ◽  
Casting Machine ◽  
Mathematic Model ◽  
Cross Point ◽  
Peritectic Steel ◽  
Support Roller ◽  
The Cross

The minimum mould exit shell thickness (MEST) is one of key factors to consider for continuous casting machine design and the strand cooling schemes. Based on the shell strength at elevated temperatures, a concept of shell integral average strength, from its very top surface to the solidus frontier, has been introduced to judge its bulging tendency under ferrostatic pressure. Considering the contribution to the shell stability, a mathematic model for the determination of the minimum MEST has been brought forward. It is shown that, the minimum MEST of the round bloom is decided by not only the cross section and the minimum roller spacing, but also the opening degree of the support roller and the support roller on the side. Taking a round bloom casting of plain carbon steel (grade Q235) as an example, there is the cross point with the curve of the minimum MEST by the minimum roller spacing and the minimum MEST by the fluting include angle of the support roller and the support roller on the side against the cross section, if its own geometry structure cannot hold the ferrostatic pressure, the minimum MEST on the left of the cross point can remain as the determined amount by the minimum roller spacing; but on the right, it is increased with the increasing width of cross section.

Optimization Design of Automobile Suspension Springs Based on BP

2010 ◽  
Vol 42 ◽  
pp. 82-85 ◽  
Author(s):  
Xiao Hui Shi ◽  
Hong Li Gao ◽  
Ming Heng Xu
Keyword(s):  
Optimization Design ◽  
Maximum Stress ◽  
Stress Model ◽  
Analysis Method ◽  
Parallel Genetic Algorithm ◽  
Distribution Law ◽  
Suspension Spring ◽  
Automobile Suspension ◽  
Stress Point ◽  
Automotive Suspension

In order to optimize the arithmetic of the automobile suspension springs, the optimization algorithm of spring stress model based on BP neural networks was proposed. The various models of suspension spring were aggregated and analyzed, the parallel genetic algorithm for the suspension springs was proposed in this paper as well. And the spring models can be optimized fast and efficiently by the algorithm. Aiming at different models, the maximum stress point and the distribution law are given by means of experimental verifications. A new stress analysis method and a new estimate rule for the design of automotive suspension springs are provided by this method.

Application of ANSYS in Grid Structure

2012 ◽  
Vol 271-272 ◽  
pp. 705-709
Author(s):  
Hong Jiang Chen ◽  
Yue Hai Wu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimization Design ◽  
Grid Structure ◽  
Element Analysis ◽  
Space Truss ◽  
Design Function ◽  
Bar Buckling ◽  
Reasonable Choice ◽  
Definition Of

Space grid structure of modern large span structure engineering in the most commonly used structure form. This paper used ANSYS network space truss finite element analysis, discuss the element type, and the selection of material models, and the definition of the limit stress, when necessary, even considering the bar buckling state ( buckling ). Under various load (permanent loads, wind loads, seismic loads, under the action of gravity ), using the powerful finite element analysis software ANSYS on the structure static analysis, after the use of ANSYS powerful optimization design function, the structure safety, the bar section optimization design, and then on the basis of the existing rod a cross section, a reasonable choice of bar section, reduce the material consumption, to achieve the best economic, reasonable design, implementation can develop continuously, make the satisfactory design.

scholarly journals Slope Stability Analysis Based on Measured Strains along Soil Nails Using FBG Sensing Technology

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Hua-Fu Pei ◽  
Chao Li ◽  
Hong-Hu Zhu ◽  
Yu-Jie Wang
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Cross Section ◽  
Slip Surface ◽  
Axial Stress ◽  
Limit Equilibrium ◽  
Cost Effective ◽  
Slope Stability Analysis ◽  
Actual Condition ◽  
Soil Nails

In the past few decades, slope stability analysis using numerical methods is becoming a hot issue, but it is based on extremely ideal assumptions. Soil nailing technique, as one of the most cost-effective reinforcing methods, has already been widely used for reinforcing slopes. In this study, to evaluate the safety factor of a slope, the strains on soil nails were measured by fiber Bragg grating (FBG) sensor. Strains along soil nails in the same cross section of a slope can be computed using the measured wavelength shifts of FBG sensors. In order to evaluate the stability of a slope, an optimal model was proposed to search the potential slip surfaces based on measured strain values. Maximum sum of strains on soil nails at different elevations of the same cross section was taken as the objective. Positions of soil nails, circular slip surface, and boundary conditions of the soil nails were summarized and taken as constraints. Finally, safety factors can be computed using the searched slip surface regarding the axial stress of soil nails. This method combines the limit equilibrium methods with measured axial strains on site which can reflect the actual condition of field slopes.

Optimization Design of Beam Based on Genetic Algorithm

2010 ◽  
Vol 163-167 ◽  
pp. 2365-2368 ◽  
Author(s):  
Shu Ling Qiao ◽  
Zhi Jun Han
Keyword(s):  
Genetic Algorithm ◽  
Objective Function ◽  
Linear Approximation ◽  
Approximation Method ◽  
Optimization Design ◽  
Mathematic Model ◽  
Processing Method ◽  
Fast Convergence ◽  
The Other ◽  
Linear Approximation Method

In this paper, determinate beam and indeterminate beam with multiple span are optimized by using genetic algorithm, the mathematic model of optimize beam is built and the processing method of constraint conditions is given. The examples show that the algorithm could be used for optimizing determinate structure, and also optimizing indeterminate structure. Compared to the linear approximation method, genetic algorithm has advantages of being simple, easy, fast convergence and has no use for changing the objective function and constraint conditions to linearity or other processing. Its results agree with linear approximation method’s. It is the other method that can be adopt in engineering field.

Failure Mechanism of a Slope Anti-Sliding Pile

2013 ◽  
Vol 639-640 ◽  
pp. 593-597
Author(s):  
Lin Chen ◽  
Yong Yao ◽  
Jiong Yang ◽  
Zhao Qiang Zhang
Keyword(s):  
Finite Element ◽  
Failure Mechanism ◽  
Reduction Method ◽  
Strength Reduction ◽  
Strength Reduction Method ◽  
Analysis Method ◽  
Feasible Method ◽  
Finite Element Software ◽  
Slope Excavation ◽  
Pile Design

According to finite element strength reduction method，the article has discussed the failure mechanism of anti-sliding pile by using finite element software MIDAS /GTS ，exploration report and anti-sliding pile design data.The comparative analysis shows that the failure of anti-siding pile is contributed by the slope excavation and rainwater.The analysis method and results can provide reference significance to other anti-sliding pile design.This paper also provide a feasible method for prediction of consequence in slope excavation.

Anisotropic Creep Behaviour of Bridgman Notch Specimens

2005 ◽  
Vol 219 (3) ◽  
pp. 163-175 ◽  
Author(s):  
T H Hyde ◽  
I A Jones ◽  
S Peravali ◽  
W Sun ◽  
J G Wang ◽  
...  
Keyword(s):  
Cross Section ◽  
Bulk Material ◽  
Creep Behaviour ◽  
Practical Application ◽  
Material Anisotropy ◽  
Yield Model ◽  
Anisotropic Parameter ◽  
Creep Analysis ◽  
Minimum Cross Section ◽  
Anisotropic Creep

A series of finite element anisotropic creep analyses of a Bridgman notch specimen have been performed. The anisotropic creep analysis is based on Hill's anisotropic yield model and the Norton creep law. An anisotropic parameter, p, is defined in order to quantify the degree of bulk material anisotropy which exists in a weld metal. The effects of p and the Norton stress exponent, n, on the stationary-state stresses, at the minimum cross-section of the notch, are presented. The material constants were chosen to include the practical range for engineering materials. Indications of the practical application of anisotropic analyses to welds are given.

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