当今的计算科学与工程在模拟复杂材料行为时面临着巨大的挑战，需要发展新的数学模型和计算方法。这些挑战包括表征和材料响应与微观结构之间关联关系，模拟材料的损伤和破坏，以及描述结构及其材料的多尺度多物理耦合行为。近场动力学是近年来国际上兴起的基于非局部作用思想建立的一套固体力学理论体系。该理论假设相隔有限距离的非接触物质点之间仍然存在力的相互作用，并通过求解空间非局部力的积分方程来描述材料的力学行为，避免了基于连续性假设建模和求解空间微分方程的传统宏观力学方法在面临不连续问题时的奇异性。因此，近场动力学模型适合于模拟裂纹自发地初始和扩展过程，并且不需要复杂的裂纹扩展准则。然而，实现近场动力学模拟通常会导致巨大的计算成本，并且与经典的面力边界条件不兼容。针对上述挑战，本人与学生们共同建立起了“近场动力学理论与多尺度方法”课题组，基于非均质和复合材料建模与模拟方面的研究经验，逐步深入到耦合近场动力学与经典连续介质力学的新型多尺度模型，并将该耦合模型应用于材料从弹性变形、损伤到断裂的整个服役周期的模拟，为研究材料的破坏行为打开了新局面。课题组的研究领域涵盖：工程力学、固体力学、计算力学、计算数学以及大数据和软件研发等，研究方向包括：近场动力学理论与软件开发，材料变形破坏的建模与模拟，多尺度与多物理场耦合计算以及机器学习与数据驱动计算。

       正如上述内容所说，近场动力学理论是国际上新兴的一整套非局部连续力学理论体系，特别适用于模拟材料自发地断裂过程。然而，因为近场动力学的数学理论内容丰富且与传统理论差别较大，目前的相关文献又以英文表述为主，所以很多朋友在一开始学习时会遇到一些困难。因此，我于2016年9月建立了微信公众号“近场动力学讨论班”，希望通过我们课题组的学习加上文献翻译和整理，降低新手学习近场动力学理论的入门门槛，分享国际上近场动力学的研究进展，从而聚集对近场动力学理论感兴趣的华人朋友，为推动近场动力学理论的发展做一点儿贡献！感兴趣的朋友们可以扫描关注此公众号：

近十五年发表文献列表：

1.        Fei Han, Zhibin Li, Jianyu Zhang, Zhiying Liu, Chen Yao, Wenping Han, ABAQUS and ANSYS Implementations of the Peridynamics-Based Finite Element Method (PeriFEM) for Brittle Fractures, Computer Modeling in Engineering & Sciences, 2023, (online) https://doi.org/10.32604/cmes.2023.026922.

2.        Jieqiong Zhang, Fei Han, Zihao Yang, Junzhi Cui, Coupling of an atomistic model and bond-based peridynamic model using an extended Arlequin framework, Computer Methods in Applied Mechanics and Engineering, Computer Methods in Applied Mechanics and Engineering, 2023, 403: 115663.

3.        Xiang Ou, Xiaohu Yao, Fei Han, An adaptive coupling modeling between peridynamics and classical continuum mechanics for dynamic crack propagation and crack branching, Engineering Fracture Mechanics, 2023, 281:109096.

4.        Zhibin Li, Fei Han, The peridynamics-based finite element method (PeriFEM) with adaptive continuous/discrete element implementation for fracture simulation, Engineering Analysis with Boundary Elements, 2023, 146: 56-65.

5.        Fei Han, Zhibin Li, A Peridynamics-Based Finite Element Method (PeriFEM) for Quasi-Static Fracture Analysis, Acta Mechanica Solida Sinica, 2022, 35: 446-460.

6.        Yuan Liu, Fei Han, Ling Zhang, An extended fictitious node method for surface effect correction of bond-based peridynamics, Engineering Analysis with Boundary Elements, 2022, 143: 78-94.

7.        Zhiying Liu, Shankun Liu, Fei Han, Liusheng Chu, The Morphing method to couple local and non-local thermomechanics, Computational Mechanics, 2022, 70: 367-384.

8.        Runze Song, Fei Han, Yong Mei, Yunhou Sun, Ao Zhang, A Hybrid Local/Nonlocal Continuum Mechanics Modeling of Damage and Fracture in Concrete Structure at High Temperatures, Computer Modeling in Engineering & Sciences, 2022, 133(2): 389-412.

9.        Bowen Sun, Fei Han, Chun Feng, Yong Mei, Yunhou Sun, Jun Shen, Ao Zhang, Modeling of projectile penetrating fiber-reinforced concrete via the continuum discontinuum element method, Engineering Fracture Mechanics, 2022, 276:108887.

10.     Zihao Yang, Shaoqi Zheng, Fei Han, Shangkun Shen, Xiaofei Guan, An Improved Peridynamic Model with Energy-Based Micromodulus Correction Method for Fracture in Particle Reinforced Composites, Communications in Computational Physics, 2022, 32(2): 424-449.

11.     Guojun Zheng, Lili Li, Fei Han, Yang Xia, Guozhe Shen, Ping Hu, Coupled peridynamic model for geometrically nonlinear deformation and fracture analysis of slender beam structures, International Journal for Numerical Methods in Engineering, 2022, 123(16): 3658-3580.

12.     张建宇，韩非，江柏红，林晔，基于显微CT图像的近场动力学建模与复合材料微结构破坏模拟，固体力学学报，2022，43(2): 143-157.

13.     Zhibin Li, Yongxing Shen, Fei Han, Zihao Yang, A phase field method for plane-stress fracture problems with tension-compression asymmetry, Engineering Fracture Mechanics, 2021, 257:107995.

14.     Yongwei Wang, Fei Han, Gilles Lubineau, Strength-induced peridynamic modeling and simulation of fractures in brittle materials, Computer Methods in Applied Mechanics and Engineering, 2021, 374: 113558.

15.     Jiaming Zhan, Xiaohu Yao, Fei Han, Xiaoqing Zhang, A rate-dependent peridynamic model for predicting the dynamic response of particle reinforced metal matrix composites, Composite Structures, 2021, 263: 113673.

16.     Shangkun Shen, Zihao Yang, Fei Han, Junzhi Cui, Jieqiong Zhang, Peridynamic modeling with energy-based surface correction for fracture simulation of random porous materials, Theoretical and Applied Fracture Mechanics, 2021, 114: 102987.

17.     Fei Han, Shankun Liu, Gilles Lubineau, A dynamic hybrid local/nonlocal continuum model for wave propagation, Computational Mechanics, 2021, 67(1): 385-407.

18.     Jiaming Zhan, Xiaohu Yao, Fei Han, An approach of peridynamic modeling associated with molecular dynamics for fracture simulation of particle reinforced metal matrix composites, Composite Structures, 2020, 250: 112613.

19.     Yongwei Wang, Fei Han, Gilles Lubineau, A Hybrid Local/Nonlocal Continuum Mechanics Modeling and Simulation of Fracture in Brittle Materials, CMES-Computer Modeling in Engineering & Sciences, 2019, 121(2): 399-423.

20.     Fei Han, Thirupathi Maloth, Gilles Lubineau, Recep Yaldiz, Amit Tevtia, Computational Investigation of the Morphology, Efficiency, and Properties of Silver Nano Wires Networks in Transparent Conductive Film. Scientific Reports, 2018, 8: 17494.

21.     Angel Mora, Fei Han Gilles Lubineau, Estimating and understanding the efficiency of nanoparticles in enhancing the conductivity of carbon nanotube/polymer composites. Results in Physics, 2018, 10: 81-90.

22.     Angel Mora, Fei Han Gilles Lubineau, Computational modeling of electrically conductive networks formed by graphene nanoplatelet–carbon nanotube hybrid particles. Modelling and Simulation in Materials Science and Engineering, 2018, 26(3): 035010.

23.     Gilles Lubineau, Angel Mora, Fei Han, Ihab Odeh, Recep Yaldiz, A morphological investigation of conductive networks in polymers loaded with carbon nanotubes. Computational Materials Science, 2017, 130, 21-38.

24.     Jian Zhou, Hu Yu, Xuezhu Xu, Fei Han, Gilles Lubineau, Ultrasensitive, Stretchable Strain Sensors Based on Fragmented Carbon Nanotube Papers. ACS Applied Materials & Interfaces, 2017. 9(5), 4835-4842.

25.     Fei Han, Gilles Lubineau, Yan Azdoud, Adaptive coupling between damage mechanics and peridynamics: a route for objective simulation of material degradation up to complete failure, Journal of the Mechanics and Physics of Solids, 2016, 94, 453-472.

26.     Fei Han, Gilles Lubineau, Yan Azdoud, Abe Askari, A morphing approach to couple state-based peridynamics with classical continuum mechanics, Computer Methods in Applied Mechanics and Engineering, 2016, 301, 336-358.

27.     Jian Zhou, Matthieu Mulle, Yaobin Zhang, Xuezhu Xu, Er Qiang Li, Fei Han, Sigurdur T Thoroddsen, Gilles Lubineau. High-ampacity conductive polymer microfibers as fast response wearable heaters and electromechanical actuators, Journal of Materials Chemistry C, 2016, 4, 1238-1249.

28.     Yan Azdoud, Fei Han, Gilles Lubineau. The morphing method as a flexible tool for adaptive local/non-local simulation of static fracture, Computational Mechanics, 2014, 54(3), 711-722.

29.     Fei Han, Yan Azdoud, Gilles Lubineau. Computational modeling of elastic properties of carbon nanotube/polymer composites with interphase regions. Part I: Micro-structural characterization and geometric modeling, Computational Materials Science, 2014, 81, 641-651.

30.     Fei Han, Yan Azdoud, Gilles Lubineau. Computational modeling of elastic properties of carbon nanotube/polymer composites with interphase regions. Part II: Mechanical modeling, Computational Materials Science, 2014, 81, 652-661.

31.     Yan Azdoud, Fei Han, Gilles Lubineau. A morphing framework to couple non-local and local anisotropic continua, International Journal of Solids and Structures, 2013, 50, 1332-1341.

32.     Gilles Lubineau, Yan Azdoud, Fei Han, Christian Rey, Abe Askari. A morphing strategy to couple non-local to local continuum mechanics, Journal of the Mechanics and Physics of Solids, 2012, 60, 1088-1102.

33.     Fei Han, Gilles Lubineau. Coupling of non-local and local continuum models by the Arlequin approach, International Journal for Numerical Methods in Engineering, 2012, 89, 671-685.

34.     Fei Han, Junzhi Cui, Yan Yu, The statistical second-order two-scale method for mechanical properties of statistically inhomogeneous materials, International Journal for Numerical Methods in Engineering, 2010, 84, 972–988.

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