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| 1 | Combining artificial neural network and multi-objective optimization to reduce a heavy-duty diesel engine emissions and fuel consumption显示文摘Nondominated sorting genetic algorithm Ⅱ(NSGA-Ⅱ) is well known for engine optimization problem. Artificial neural networks(ANNs) followed by multi-objective optimization including a NSGA-Ⅱ and strength pareto evolutionary algorithm(SPEA2) were used to optimize the operating parameters of a compression ignition(CI) heavy-duty diesel engine. First, a multi-layer perception(MLP) network was used for the ANN modeling and the back propagation algorithm was utilized as training algorithm. Then, two different multi-objective evolutionary algorithms were implemented to determine the optimal engine parameters. The objective of the present study is to decide which algorithm is preferable in terms of performance in engine emission and fuel consumption optimization problem. | Amir-Hasan Kakaee Pourya Rahnama Amin Paykani Behrooz Mashadi | 2015 | Journal of Central South University2015，22，11： | 3 |
| 2 | Dynamic rupture and crushing of an extruded tube using artificial neural network(ANN)approximation method显示文摘A numerical study of the crushing of thin-walled circular aluminum tubes has been carried out to investigate the crashworthiness behaviors under axial impact loading. These kinds of tubes are usually used in automobile and train structures to absorb the impact energy. Previous researches show that thin-walled circular tube has the highest energy absorption under axial impact amongst different structures. In this work, the crushing between two rigid flat plates and the tube rupture by 4 and 6 blades cutting tools is modeled with the help of ductile failure criterion using the numerical method. The tube material is aluminum EN AW-7108 T6 and its length and diameter are 300 mm and 50 mm, respectively. Using the artificial neural network(ANN), the most important surfaces of energy absorption parameters, including the maximum displacement of the striker, the maximum axial force, the specific energy absorption and the crushing force efficiency in terms of impact velocity and tube thickness are obtained and compared to each other. The analyses show that the tube rupture by the 6 blades cutting tool has more energy absorption in comparison with others. Furthermore, the results demonstrate that tube cutting with the help of multi-blades cutting tools is more stable, controllable and predictable than tube folding. | Javad Marzbanrad Behrooz Mashadi Amir Afkar Mostafa Pahlavani | 2016 | Journal of Central South University2016，23，4： | 2 |
| 3 | Semi-empirical modeling of volumetric efficiency in engines equipped with variable valve timing system显示文摘Volumetric efficiency and air charge estimation is one of the most demanding tasks in control of today's internal combustion engines.Specifically,using three-way catalytic converter involves strict control of the air/fuel ratio around the stoichiometric point and hence requires an accurate model for air charge estimation.However,high degrees of complexity and nonlinearity of the gas flow in the internal combustion engine make air charge estimation a challenging task.This is more obvious in engines with variable valve timing systems in which gas flow is more complex and depends on more functional variables.This results in models that are either quite empirical(such as look-up tables),not having interpretability and extrapolation capability,or physically based models which are not appropriate for onboard applications.Solving these problems,a novel semi-empirical model was proposed in this work which only needed engine speed,load,and valves timings for volumetric efficiency prediction.The accuracy and generalizability of the model is shown by its test on numerical and experimental data from three distinct engines.Normalized test errors are 0.0316,0.0152 and 0.24 for the three engines,respectively.Also the performance and complexity of the model were compared with neural networks as typical black box models.While the complexity of the model is less than half of the complexity of neural networks,and its computational cost is approximately 0.12 of that of neural networks and its prediction capability in the considered case studies is usually more.These results show the superiority of the proposed model over conventional black box models such as neural networks in terms of accuracy,generalizability and computational cost. | Mostafa Ghajar Amir Hasan Ka Kaee Behrooz Mashadi | 2016 | Journal of Central South University2016，23，12： | 1 |
| 4 | Influence of ride motions on the handling behaviour of a passenger vehicle显示文摘 | Mashadi B Crolla A | 2005 | Auto mobile Engineering2005，219，9： | 1 |
| 5 | gear-shifting strategy for manual transmissions 显示文摘 | Mashadi B Kazemkhani A Baghaei Lakeh R | 2007 | Journal of Systems and Control Engineering2007，221，5： | 1 |
| 6 | An automatic gear-shifting strategy for manual transmissions显示文摘 | MASHADI B KAZEMKHANI A BAGHAEI LAKEH R | 2007 | Proceedings of the Institution of Mechanical Engineers Part I: Journal of Systems and Control Engineering2007，221，5： | 1 |
| 7 | Modular femoral stems for revision total hip arthroplasty显示文摘 | Restrepo C Mashadi M Parvizi J | | 0，，： | 1 |
| 8 | Optimal vehicle dynamics controller design using a four-degrees-of-freedom model 显示文摘 | MASHADI B MAJ1DI M POURABDOLLAH H | 2010 | Journal of Automobile Engineering2010，224，5： | 1 |
| 9 | Integrated AFS/DYC sliding mode controller for a hybrid electric vehicle 显示文摘 | Mashadi B Majidi M | 2011 | International Journal of Vehicle Design2011，56，14： | 1 |
| 10 | 显示文摘 | Parinaz Pouresmaeil Davood Habibi Masoud Mashadi Akbar Bo- ojar | 2013 | European Journal of Experimental Biology2013，3，3： | 1 |
| 11 | Influence of ride motions on the handling behaviour of a passenger vehicle显示文摘 | B Mashadi D A Crolla | | 0，，： | 1 |
| 12 | Modular femoral stems for revision total hip arthroplasty显示文摘 | Restrepo C Mashadi M Parvizi J+ | 2011 | Clin Orthop Reiat Res2011，469，2： | 1 |
| 13 | Central venous catheterization in neonates:Comparison of complications with percutaneous and open surgical methods显示文摘 | Hosseinpour M Mashadi MR Behdad S | | 0，，03： | 1 |
| 14 | Modular femoral stems for revision total hip arthroplasty 显示文摘 | Restrepo C Mashadi M Parvizi J | 2011 | Clin Orthop Relat Res2011，469，2： | 1 |
| 15 | The effect of locking loops on the repair strength of tendon repair显示文摘 | Mashadi ZB Amis AA | 1991 | J Hand Surg1991，16，： | 1 |
| 16 | Dual-mode power-split transmission for hybrid electric vehicles 显示文摘 | Mashadi B Emadi S A | 2010 | IEEE Transactions on Vehicular Technology2010，59，7： | 1 |
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