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| 1 | Artificial Neural Network Methods for the Solution of Second Order Boundary Value Problems显示文摘We present a method for solving partial differential equations using artificial neural networks and an adaptive collocation strategy.In this procedure,a coarse grid of training points is used at the initial training stages,while more points are added at later stages based on the value of the residual at a larger set of evaluation points.This method increases the robustness of the neural network approximation and can result in significant computational savings,particularly when the solution is non-smooth.Numerical results are presented for benchmark problems for scalar-valued PDEs,namely Poisson and Helmholtz equations,as well as for an inverse acoustics problem. | Cosmin Anitescu Elena Atroshchenko Naif Alajlan Timon Rabczuk | 2019 | Computers, Materials & Continua2019，，4： | 72 |
| 2 | Optimizing the neural network hyperparameters utilizing genetic algorithm显示文摘Neural networks(NNs),as one of the most robust and efficient machine learning methods,have been commonly used in solving several problems.However,choosing proper hyperparameters(e.g.the numbers of layers and neurons in each layer)has a significant influence on the accuracy of these methods.Therefore,a considerable number of studies have been carried out to optimize the NN hyperpaxameters.In this study,the genetic algorithm is applied to NN to find the optimal hyperpaxameters.Thus,the deep energy method,which contains a deep neural network,is applied first on a Timoshenko beam and a plate with a hole.Subsequently,the numbers of hidden layers,integration points,and neurons in each layer are optimized to reach the highest accuracy to predict the stress distribution through these structures.Thus,applying the proper optimization method on NN leads to significant increase in the NN prediction accuracy after conducting the optimization in various examples. | Saeid NIKBAKHT Cosmin ANITESCU Timon RABCZUK | 2021 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2021，22，6： | 5 |
| 3 | High velocity impact of metal sphere on thin metallic plate using smooth particle hydrodynamics(SPH)method显示文摘The modeling of high velocity impact is an important topic in impact engineering.Due to various constraints,experimental data are extremely limited.Therefore,detailed numerical simulation can be considered as a desirable alternative.However,the physical processes involved in the impact are very sophisticated;hence a practical and complete reproduction of the phenomena involves complicated numerical models.In this paper,we present a smoothed particle hydrodynamics(SPH)method to model two-dimensional impact of metal sphere on thin metallic plate.The simulations are applied to different materials(Aluminum,Lead and Steel);however the target and projectile are formed of similar metals.A wide range of velocities(300,1000,2000,and 3100 m/s)are considered in this study.The goal is to study the most sensitive input parameters(impact velocity and plate thickness)on the longitudinal extension of the projectile,penetration depth and damage crater. | Hossein ASADI KALAMEH Arash KARAMALI Cosmin ANITESCU Timon RABCZUK | 2012 | Frontiers of Structural and Civil Engineering2012，6，2： | 4 |
| 4 | Co-oxidation effects of methanol and benzene on the decomposition of 4-chlorobiphenyl in supercritical water显示文摘 | Anitescu G Munteanu V Tavlarides L L | 2005 | J Supercrit Fluids2005，33，： | 1 |
| 5 | Dieseline for Supercritical Injection and Combustion in Compression-Ignition Engines: Volatility, Phase Transitions, Spray/Jet Structure, and Thermal Stability 显示文摘 | GEORGE ANITESCU THOMAS J BRUNO LAWRENCE LTAVLARIDES | 2012 | Energy & Fuels2012，26，： | 1 |
| 6 | An iterative approach for cone complementarity problems for nonsmooth dynamics 显示文摘 | Anitescu M Tasora A | 2010 | Computational Optimization and Applications (S 10589-008-9223-4)2010，47，2： | 1 |
| 7 | Dieseline for supercritical injection and combustion in compression- ignition engines : Volatility, phase transitions, spray/jet structure, and thermal stability显示文摘 | Anitescu G Bruno T J Tavlarides L L | 2012 | Energy & Fuels2012，26，10： | 1 |
| 8 | Formulating Dynamic multi-rigid- body contact problems with friction as solvable linear complementarity problems 显示文摘 | Anitescu M Potra F A | 1997 | Nonlinear Dynamics1997，14，： | 1 |
| 9 | Formulating Dynamic Multi-Rigid-Body Contact Problems with Friction as Solvable Linear Complementarity Problems 显示文摘 | Anitescu M F A Potra | 1997 | Nonlinear Dynamics ($231-247)1997，14，3： | 1 |
| 10 | A linearly implicit trapezoidal method for integrating stiff multibody dynamics with contact, joints, and friction 显示文摘 | Potra F A Anitescu Mihai Gavrea Bogdan | 2006 | International Journal for Numerical Methods in Engineering (S1097-0207)2006，66，7： | 1 |
| 11 | Integrated technology for supercritical biodiesel production and power cogeneration显示文摘 | Anitescu G Deshpande A Tavlarides L | 2008 | Energy Fuels2008，22，： | 1 |
| 12 | Isolation of Coriander oil:comparison between steam distillation and supercritical CO2 extraction 显示文摘 | Anitescu G Doneanu C Radulescu V | 1997 | Flav0ur and Fragrance Journal1997，12，3： | 1 |
| 13 | Time-stepping for Three-Dimansional Rigid Body Dynamics显示文摘 | Mihai Anitescu Florian A Potra David E Stewart | 1999 | Computer Methods in Applied Mechanics and Engineering1999，177，34： | 1 |
| 14 | 基于PHT-样条加强等几何分析配置方法显示文摘结合传统等几何分析配置法和传统等几何分析伽辽金法,提出一种基于PHT-样条函数的加强等几何分析配置方法.对于一个偏微分方程问题,基于具有局部细分特性的PHT-样条基础函数,应用传统等几何分析配置法在问题域内配置点定义线性方程组,并应用传统等几何分析伽辽金法施加边界条件,以保证多片结构连接的稳定;再将2组线性方程组及施加的边界条件合成一个整体系统.实例计算结果表明,该方法既具有配置法固有的计算效率高的优点,又改善了边界计算出现的不稳定问题,可有效地用于局部细分和多片结构的计算. | 贾悦 Cosmin Anitescu Yongjie Jessica Zhang 徐岗 李春 Timon Rabczuk | 2018 | 计算机辅助设计与图形学学报2018，30，4： | 1 |
| 15 | Opioid-free perioperative analgesia for hemicolectomy in a patient with opioid-induced delirium:a case report and review of the analgesic efficacy of the alpha-2agonist agents显示文摘 | Patil SK Anitescu M | 2012 | Pain Pract2012，12，8： | 1 |
| 16 | Opioid-free perioperative analgesia for hemicolectomy in a patient with opioid-induced deliri- um: a case report and review of the analgesic efficacy of the alpha-2 agonist agents显示文摘 | Patil SK Anitescu M | 2012 | Pain Pract2012，12，8： | 1 |
| 17 | Opioid-free perioperative analgesia for hemicolectomy in a patient with opioid-induced delirium:a case report and review of the analgesic efficacy of the alpha-2 agonist agents显示文摘 | Patil SK Anitescu M | 2012 | Pain Pract2012，12，8： | 1 |
| 18 | Supercritical extraction of contaminants from soils and sediments显示文摘 | Anitescu G Tavlarides L L | 2006 | J of Supercritical Fluids2006，38，： | 1 |
| 19 | On using the elastic mode in nonlinear programming approaches to mathematical programs with complementarity constraints显示文摘 | Anitescu M | 2005 | SIAM Journal on Optimization2005，15，4： | 1 |
| 20 | A preconditioning technique for Schur complement systems arising in stochastic optimization显示文摘 | PETRA C G ANITESCU M | 2012 | Computational Optimization and Applications2012，52，2： | 1 |
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