Optimal Design of Stamping Process for Fabrication of Titanium Bipolar Plates Using the Integration of Finite Element and Response Surface Methods

2019 ◽  
Vol 45 (2) ◽  
pp. 1097-1107 ◽  
Author(s):  
Vahid Modanloo ◽  
Vali Alimirzaloo ◽  
Majid Elyasi
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Response Surface ◽  
Bipolar Plates ◽  
Response Surface Methods ◽  
Stamping Process

Analysis and optimization of the strain concentration factor in countersunk rivet holes via finite element and response surface methods

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Mohannad Jreissat ◽  
Mohammad A. Gharaibeh
Keyword(s):  
Finite Element ◽  
Response Surface ◽  
Concentration Factor ◽  
Element Model ◽  
Rectangular Plates ◽  
Element Analysis ◽  
Content Type ◽  
Response Surface Methods ◽  
Strain Concentration ◽  
Factor Data

PurposeThe purpose of this paper is to investigate the strain concentration factor in a central countersunk hole riveted in rectangular plates under uniaxial tension using finite element and response surface methods.Design/methodology/approachIn this work, ANSYS software was elected to create the finite element model of the present structure, execute the analysis and generate strain concentration factor (,) data. Response surface method was implemented to formulate a second order equation to precisely compute (,) based on the geometric and material parameters of the present problem.FindingsThe computations of this formula are accurate and in a great agreement with finite element analysis (FEA) data. This equation was further used for obtaining optimum hole and plate designs.Originality/valueAn optimum design of the countersunk hole and the plate that minimizes the (,) value was achieved and hence validated with FEA findings.

scholarly journals Optimum Shape Design of Metal-Enclosed 550 kV Disconnectors Based on Response Surface Method and Finite Element Analysis

2015 ◽  
Vol 5 (4) ◽  
pp. 818-824
Author(s):  
R. Gong ◽  
S. Wang ◽  
X. Luo ◽  
M. Danikas
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Response Surface ◽  
Optimum Shape ◽  
Shape Design ◽  
Optimal Result ◽  
Surface Method

In this paper, the optimum shape design of 550 kV disconnectors in Gas Insulated Switchgears (GIS) are firstly presented employing the Finite Element Method (FEM) for electric field analysis coupled with an optimal design method. For effective analysis, the FEM is conducted in transient quasistatic electric field, using a finite element FORTRAN code. The structure parameters of disconnectors that provide the required electric field strength are obtained by the Response Surface Method (RSM) and the optimal values are presented by the variation in maximal electric field strength. The RSM and optimal design methods are also conducted by FORTRAN codes. The optimal result reveals that a uniform electric field distribution is achieved in 550 kV disconnectors. Additionally, the optimal result of disconnectors is verified by the proposed disconnector undertaken power frequency withstanding voltage of 740 kV for 1 minute, lightening impulse of 1675 kV, and operating impulse of 1300 kV, respectively.

Optimal Design of Drug-Eluting Stent with Micro Holes Based on Finite Element Method

2018 ◽  
Vol 9 (2) ◽  
pp. 121-126
Author(s):  
Yanfei Zhang ◽  
Jinliang Gong ◽  
Bin Liu ◽  
Xiangkuan Cao ◽  
Zhiwen Wang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Optimal Design ◽  
Drug Eluting Stent ◽  
Micro Holes ◽  
Drug Eluting ◽  
Element Method

Evaluation of CO2 sequestration and circulation in fault-bounded thin geothermal reservoirs in North Oman using response surface methods

2021 ◽  
pp. 126411
Author(s):  
Mingjie Chen ◽  
Ali Al-Maktoumi ◽  
Mohammad Mahdi Rajabi ◽  
Azizallah Izady ◽  
Hilal Al-Mamari ◽  
...  
Keyword(s):  
Response Surface ◽  
Co2 Sequestration ◽  
Response Surface Methods ◽  
Geothermal Reservoirs

scholarly journals An Optimum Fatigue Design of Polymer Composite Compressed Natural Gas Tank Using Hybrid Finite Element-Response Surface Methods

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 483
Author(s):  
Kazem Reza Kashyzadeh ◽  
Seyed Saeid Rahimian Koloor ◽  
Mostafa Omidi Bidgoli ◽  
Michal Petrů ◽  
Alireza Amiri Asfarjani
Keyword(s):  
Finite Element ◽  
Fatigue Life ◽  
Natural Gas ◽  
Response Surface ◽  
Polymer Composite ◽  
Wall Thickness ◽  
Composite Shell ◽  
Compressed Natural Gas ◽  
Fiber Angle ◽  
Composite Tank

The main purpose of this research is to design a high-fatigue performance hoop wrapped compressed natural gas (CNG) composite cylinder. To this end, an optimization algorithm was presented as a combination of finite element simulation (FES) and response surface analysis (RSA). The geometrical model was prepared as a variable wall-thickness following the experimental measurements. Next, transient dynamic analysis was performed subjected to the refueling process, including the minimum and maximum internal pressures of 20 and 200 bar, respectively. The time histories of stress tensor components were extracted in the critical region. Furthermore, RSA was utilized to investigate the interaction effects of various polymer composite shell manufacturing process parameters (thickness and fiber angle) on the fatigue life of polymer composite CNG pressure tank (type-4). In the optimization procedure, four parameters including wall-thickness of the composite shell in three different sections of the CNG tank and fiber angle were considered as input variables. In addition, the maximum principal stress of the component was considered as the objective function. Eventually, the fatigue life of the polymer composite tank was calculated using stress-based failure criterion. The results indicated that the proposed new design (applying optimal parameters) leads to improve the fatigue life of the polymer composite tank with polyethylene liner about 2.4 times in comparison with the initial design.

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