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专家信息 科学研究 论文专著 荣誉奖励

专家信息:


魏宇杰,男,博士,现任中国科学院力学研究所非线性力学国家重点实验室研究员。

教育及工作经历:

1992年9月至1997年7月北京大学,学士。

1997年9月至2000年7月中科院力学研究所,硕士。

2000年7月至2001年8月中科院力学研究所,研究助理。

2001年9月至2006年2月麻省理工学院,博士。

2006年3月至2008年12月布朗大学,博士后。

2009年1月至2010年1月阿拉巴马大学,助理教授。

2010年2月至今中科院力学研究所,研究员。

2011年9月至2012年3月科罗拉多伯德分校,访问教授。

社会任职:

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科学研究:


研究方向:

1. 微结构计算力学;

2. 晶体材料的变形机理研究及本构模型;

3. 非晶材料中的蠕变;

4. 生物结构中的相关力学问题。

承担科研项目情况:

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科研成果:

1. 贝壳类生物材料微结构特征及其强韧化机制的研究 宋凡; 汪海英; 魏宇杰; 邓雅莉 【科技成果】中国科学院力学研究所 2004-03-01

2. 地震孕育过程的数值模拟及物理前兆研究 王裕仓; 李晖凌; 宋治平; 彭克银; 魏宇杰 【科技成果】中国科学院力学研究所 2004-03-01

发明专利:

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论文专著:


发表学术论文60余篇。

出版专著:

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发表论文:

1. Yujie Wei, Jiangtao Wu, Hanqing Yin, Xinghua Shi, Ronggui Yang, Mildred S. Dresselhaus, The nature of strength enhancement and weakening by pentagon-heptagon defects in graphene, Nature Materials ,in press.

2. Yao Liu, Wenjing Wang, Jijia Xie, Shouguang Sun, Liang Wang, Ye Qian, Yuan Meng, Yujie Wei, Microstructure and mechanical properties of aluminum 5083 weldments by gas tungsten arc and gas metal arc welding. Materials Science and Engineering A, accepted, 2012.

3. Miao Tian, Wei Wang, Yujie Wei, Ronggui Yang, Stable High-Areal-Capacity Lithium-Ion Battery Anodes Based on Three-Dimensional Ni-Sn Nanowire Networks, Journal of Power Source, 2012.

4. Xinghua Shi, Qifang Yin, Yujie Wei, A theoretical analysis of the surface dependent binding, peeling and folding of graphene on single crystal copper, Carbon, 2012. http://dx.doi.org/10.1016//j.carbon.2012.02.092.

5. Yujie, Wei, An extended strain energy density failure criterion by differentiating volumetric and distortional deformation. Int. J. Solids & Structures, vol 49, 1117-1126 (2012). http://dx.doi.org/10.1016/j.ijsolstr.2012.01.015.

6. Junjie Zhang, Yujie Wei, Tao Sun, Alexander Hartmaier, Yongda Yan, Xiaodong Li, Twin boundary spacing-dependent friction in nanotwinned copper, Physical Review B, 85, 054109 (2012).

7. Y. Chen, M. Jiang, Y Wei, L. Dai. Failure criterion for metallic glasses, Philosophical Magazine, 91, 4536–4554 (2011). http://dx.doi.org/10.1080/14786435.2011.613859.

8. Yujie Wei, Anisotropic size effect in strength in coherent nanowires with tilted

9. Fernandez A., Prado T.P., Wei, Y.J., Jerusalem A. Continuum modeling of AZ31 Magnesium alloy, a microstructural evolution study. International Journal of Plasticity, http://dx.doi.org/10.1016/j.ijplas.2011.05.002

10. Yujie Wei, Scaling of maximum strength with grain size in nanotwinned f.c.c.

11. Yi Liu, Chao Wang, Yujie Wei, Leyi Zhu, Dongguo Li, J. Samuel Jiang, Nenad M. Markovic, Vojislav R. Stamenkovic, and Shouheng Sun, Surfactant-Induced Postsynthetic Modulation of Pd Nanoparticle Crystallinity,http://pubs.acs.org/doi/abs/10.1021/nl104548g Nano Letters, 11, 1614-1617 (2011)

12. Yujie Wei, The kinetics and energetics of dislocation mediated de-twinning in nano-twinned face-centered cubic metals, Materials Science and Engineering A 528 (2011) 1558–1566.

13. Chao Wang, Yujie Wei, Hongyuan Jiang, Shouheng Sun. Bending Nanowire Growth in Solution by Mechanical Disturbance, Nano Letters 10, 2289-2295 (2010).

14. Xiaoyan Li, Yujie Wei, Ke Lu, Lei Lu, Huajian Gao. Dislocation nucleation governed softening and maximum strength in nano-twinned metals, Nature, 464, 877-880. Doi: 10.1038/nature08929, 4/8/2010.

15. Chao Wang, Yujie Wei, Hongyuan Jiang, Shouheng Sun. Tug-of-War in Nanoparticles: Competitive Growth of Au on Au-Fe3O4 Nanoparticles. Nano Letters, 9, 4544-4547(2009).

16. Yujie Wei, Allan F. Bower, Huajian Gao, Analytical model and molecular dynamics simulations of the size dependence of flow stress in amorphous intermetallic nanowires at temperatures near the glass transition, Phys. Rev. B, 81, 125402, 2010.

17. Xiaoyan Li, Yujie Wei, Wei Yang, Huajian Gao, Competing grain-boundary- and dislocation-mediated mechanisms in plastic strain recovery in nanocrystalline aluminum, Proc. Nat. Acad. Sci. USA. 106, 16108, 2009. http://www.pnas.org/lookup/doi/10.1073/pnas.0901765106.

18. Han, Z., Wu, W.F., Li, Y., Wei, Y.J., Gao, H.J. An instability index of shear band for plasticity in metallic glasses, Acta Materialia, doi:10.1016/j.actamat.2008.11.018.

19. Yujie Wei, Huajian Gao, Allan F. Bower. Numerical simulations of crack deflection at a twist misoriented grain boundary between two ideally brittle crystals, Journal of the Mechanics and Physics of Solids, 57, 1865-1879 (2009).

20. Bhandakkar T, Wei Y, Gao H. Transient stress concentration in the diffusional creep of a thin foil with heterogeneous grain-boundary diffusivity, Mathematics and Mechanics of Solids, 14, 179-191 (2009).

21. Yujie Wei. Entropic-elasticity-controlled dissociation and energetic-elasticity-controlled rupture induce catch-to-slip bonds in cell-adhesion molecules, Physical Review E,77, 031910 (2008), (details and download). doi:10.1103/PhysRevE.77.031910. Also selected to appear in the Virtual Journal of Biological Physics Research, March 15, 2008, Volume 15, Issue 6 (Intermolecular Interactions) (vjbio.org).

22. Yujie Wei. Physical interpretation of the maximum receptor-ligand bond spacing to ensure cell adhesion in ligand-coated substrates, Langmuir, Volume 24, No. 11, June 3, Page 5644 - 5646 (2008), (details and download) http://dx.doi.org/10.1021/la800048e

23. Yujie Wei and Lallit Anand. On brittle-to-ductile transition and dilatancy in rocks: a micromechanical modeling, International Journal of solids and structures,volume 45, Issue 10, 15 May 2008, Pages 2785-2798, doi:10.1016/j.ijsolstr.2007.11.028, doi:10.1016/j.ijsolstr.2007.11.028 (download).

24. Yujie Wei, Allan F. Bower, Huajian Gao. Enhanced strain-rate sensitivity in f.c.c. nanocrystals due to grain-boundary diffusion and sliding, Acta Materialia, Volume 56, Issue 8, May 2008, Pages 1741-1752. (details and download) doi: 10.1016/j.actamat.2007.12.028.

25. Yujie Wei, Allan F. Bower, Huajian Gao. 2007, Recoverable creep deformation and transient local stress concentration due to heterogeneous grain-boundary diffusion and sliding in polycrystalline solids, Journal of the Mechanics and Physics of Solids, Volume 56, Issue 4, April 2008, Pages 1460-1483. doi:10.1016/j.jmps.2007.08.007

26. Yujie Wei, Allan F. Bower, Huajian Gao. 2007, Recoverable creep deformation due to heterogeneous grain-boundary diffusion and sliding, Scripta Materialia, 57, 933-936, doi: 10.1016/j.scriptamat.2007.07.031

27. Yujie Wei and Huajian Gao, An elastic-viscoplastic model of deformation in nanocrystalline metals based on coupled mechanisms in grain boundaries and grain interiors, Mat. Sci. Engng A, 478, Issues 1-2, 16-25(2008), doi: 10.1016/j.msea.2007.05.054

28. Yujie Wei and Lallit Anand, A constitutive model for powder-processed nanocrystalline metals, Acta Materialia, 2007, 55, 921-931. doi:10.1016/j.actamat.2006.09.014

29. Yujie Wei, Cheng Su, and Lallit Anand. A computational study of the mechanical behavior of nanocrystalline fcc metals, Acta Materialia, 54, 3177-3190(2006), doi: 10.1016/j.actamat.2006.03.007

30. Yujie Wei and Lallit Anand. Grain-boundary sliding and separation in polycrystalline metals: application to nanocrystalline f.c.c. metals, Journal of Mechanics and Physics of Solids, 52, 2587-2616 (2004), doi: 10.1016/j.jmps.2004.04.006

31. C. Su, Y.J. Wei and L. Anand. An elastic-plastic interface constitutive model: application to adhesive joints, International Journal of Plasticity, 20, 2063-2081 (2004), doi:10.1016/j.ijplas.2003.12.008 .

32. Mengfen Xia, Yujie Wei, Fujiu Ke, and Yilong Bai, Critical Sensitivity and Trans-scale Fluctuations in Catastrophe Rupture, Pure and Applied Geophysics, 159, 2491-2509 (2002), doi: 10.1007/s00024-002-8744-5.

33. Yujie Wei, Mengfen Xia, Fujiu Ke, Xiangchu Yin and Yilong Bai, Evolution Induced Catastrophe and its Predictability, Pure and Applied Geophysics, 157, 1945-1957 (2000), doi: 10.1007/PL00001069.

34. Y.L. Bai, Y.J. Wei, M.F. Xia and F.J. Ke, Weibull Modulus of Diverse Strength due to Sample-Specificity, Theoretical and Applied Fracture Mechanics, 34, 211-216 (2000), doi: 10.1016/S0167-8442(00)00037-9 .

35. Mengfen Xia, Fujiu Ke, Yujie Wei, Jie Bai and Yilong Bai, Evolution Induced Catastrophe in a Nonlinear Dynamics Model of Material Failure, Nonlinear Dynamics, 22, 205-224 (2000), doi: 10.1023/A:1008324329908.

36. Fujiu Ke, Yujie Wei, Mengfen Xia, Statistical mechanical properties in inhomogeneous brittle material, Chinese Science Abstracts, 7, 924-925 (2001).

37. Yujie Wei, An Extended Strain Energy Density Failure Criterion by Differentiating Volumetric and Distortional Effects. ASME 2011 International Mechanical Engineering (IMECE2011),Nov. 7-11, Denver, Colorado, USA.

38. Yujie Wei, Size Effect in Nano-Twinned F.C.C. Metals and Theoretical Modelling. ASME 2011 International Mechanical Engineering (IMECE2011),Nov. 7-11, Denver, Colorado, USA.

39. Yujie Wei, Anisotropic size effect on strength in coherent nanowires with tilted twins International Conference on Mechanical Properties of Materials, Hangzhou, China (June 12-15, 2011)

40. Yujie Wei, Mechanics of deformation twinning at nanoscale, Hunan University, Changsha, China (May 2010)

41. Yujie Wei, Diffusion at small scale. Institute of Solid Mechanics, Tsinghua University, Beijing (May 2010)

42. Yujie Wei, Size effect in polycrystalline metlas with embedded twins. Mechanics Department, Peking University, Beijing (April. 2010)

43. Yujie Wei, Allan Bower, Huajian Gao, Size dependence of flow stress in amorphous nano-wiresduring straining at temperatures near the glass transition. MRS Fall meeting (Boston, Massachusetts. Nov.30-Dec. 4, 2009)

44. Yujie Wei, Allan Bower, Huajian Gao, Mechanics of crack deflection at a twist grain boundary. ASME congress IMECE2009 (Lake Buena Vista, Florida. Nov. 13-24, 2009), Invited talk.

45. Yujie Wei, Entropic-elasticity-controlled dissociation and energetic-elasticity-controlled rupture induce catch-to-slip bonds in cell-adhesion molecules. MRS Fall Meeting 2008 Boston, USA, Nov. 27-Dec. 2, 2008.

46. Yujie Wei, Allan Bower, Huajian Gao, Mechanical deformation associated heterogeneous grain-boundary diffusion and grain-boundary sliding in nanocrystals. ASME International Mechanical Engineering Congress. Track 12 Mechanics of Solids, Structures and Fluids, Symposium Hornoring John W. Hutchinson, Boston, USA, Oct. 31-Nov. 6, 2008.

47. Yujie Wei, Entropic-elasticity-controlled dissociation and energetic-elasticity-controlled rupture induce catch-to-slip bonds in cell-adhesion molecules. International Union of Theoretical and Applied Mechanics (IUTAM) Symposium on Cellular, Molecular and Tissue Mechanics, Jonsson Conference Center of the US National Academy of Sciences, Woods Hole, Massachusetts, USA, June 18 - 21, 2008.

48. Yujie Wei, Entropic-elasticity-controlled dissociation and energetic-elasticity-controlled rupture induce catch-to-slip bonds in cell-adhesion molecules. Gordon Research Conference, Biopolymers, Newport, RI. USA. June 8-13, 2008.

49. Yujie Wei, Entropic-elasticity-controlled dissociation and energetic-elasticity-controlled rupture induce catch-to-slip bonds in cell-adhesion molecules. 34th Northeast bioengineering conference, Providence, RI. USA. April 4-6, 2008.

50. Yujie Wei, Allan Bower, Huajian Gao, Mechanical deformation associated heterogeneous grain-boundary diffusion and grain-boundary sliding in nanocrystals. Materials Research Society (MRS) spring conference, San Francisco, USA, March 25 - 27, 2008.

51. Yujie Wei, Tanmay, Bhandakkar, Huajian Gao, Modeling on grain boundary diffusion in thin films and nanostructured materials, Gordon conference on Thin Film & Small Scale Mechanical Behavior, Colby College, Waterville ME 7/30-8/4, 2006.

52. Yujie Wei and Lallit Anand, A finite element study of the mechanical behavior of nanocrystalline fcc metals, 15th U.S. National Congress on Theoretical and Applied Mechanics, University of Colorado at Boulder, 6/26-6/30/2006.

53. L. Anand and Y.J. Wei, IUTAM Symposium on Mechanical Behavior and Micro-mechanics of Nanostructured Materials, 2005, Beijing, China.

54. Y.J. Wei, L. Anand and S. Suresh, Grain-Boundary Sliding and Separation in Nanocrystalline materials: a Continuum Model, Material Research Society Fall Meeting, 2003, Boston, U.S.A.

55. Y.L. Bai, H.L. Li, Y.J. Wei, Z.K. Jia, Key role of microdamage growth in time-dependent spall strength, in Shock compression of condensed matter, 2001: proceedings of the conference of the American Physical Society, 2001, Atlanta Georgia, U.S.A.

56. M.F. Xia, Y.J. Wei, F.J. Ke, X.C. Yin and Y.L. Bai, Statistical Characteristics and Precursors of Evolution Induced Catastrophe, Int. Workshop on Solid Earth Simulation and ACES WG Meeting, Tokyo, Japan. Jan. 17-21, 2000.

57. Y.L. Bai, Y.J. Wei, M.F. Xia and F.J. Ke, Sample-Specificity due to Mesoscopic Heterogeneity, Mesomechanics 2000, Xi'an Jiaotong University, June, 13-16, 2000, Xi'an China. In Proceedings of the third international conference for mesomechanics, 2000 (Editor, G.C. Sih), 153-160, Tsinghua Univ. Press, Beijing China.

58. M.F. Xia, Y.J. Wei, F.J. Ke, Y.L. Bai, Critical sensitivity and fluctuations in catastrophic rupture, The 2nd ACES Workshop, Oct. 15-20, 2000, Tokyo, 43-45.

荣誉奖励:


1. 2009年入选中国科学院百人计划。

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