| 1 | PERSPECTIVES IN MECHANICS OF HETEROGENEOUS SOLIDS显示文摘The Microand Nano-mechanics Working Group of the Chinese Society of Theoretical and Applied Mechanics organized a forum to discuss the perspectives,trends,and directions in mechanics of heterogeneous materials in January 2010.The international journal,Acta Mechanica Solida Sinica,is devoted to all fields of solid mechanics and relevant disciplines in science,technology,and engineering,with a balanced coverage on analytical,experimental,numerical and applied investigations.On the occasion of the 30 th anniversary of Acta Mechanica Solida Sinica,its editor-in-chief,Professor Q.S.Zheng invited some of the forum participants to review the state-of-the-art of mechanics of heterogeneous solids,with a particular emphasis on the recent research development results of Chinese scientists.Their reviews are organized into five research areas as reported in different sections of this paper.§I firstly brings in focus on microand nano-mechanics,with regards to several selective topics,including multiscale coupled models and computational methods,nanocrystal superlattices,surface effects,micromechanical damage mechanics,and microstructural evolution of metals and shape memory alloys.§II shows discussions on multifield coupled mechanical phenomena,e.g.,multi-fields actuations of liquid crystal polymer networks,mechanical behavior of materials under radiations,and micromechanics of heterogeneous materials.In §III,we mainly address the multiscale mechanics of biological nanocomposites,biological adhesive surface mechanics,wetting and dewetting phenomena on microstructured solid surfaces.The phononic crystals and manipulation of elastic waves were elaborated in §IV.Finally,we conclude with a series of perspectives on solid mechanics.This review will set a primary goal of future science research and engineering application on solid mechanics with the effort of social and economic development. | C.Q. Chen J.Z. Cui H.L. Duan X.Q. Feng L.H. He G.K. Hu M.J. Huang Y.Z. Huo B.H. Ji B. Liu X.H. Peng H.J. Shi Q.P. Sun J.X. Wang Y.S. Wang H.P. Zhao Y.P. Zhao Q.S. Zheng W.N. Zou | 2011 | Acta Mechanica Solida Sinica2011，24，1： | 18 |
| 2 | 三轴压缩下岩石类材料的细观损伤–渗流耦合本构模型显示文摘岩石类材料的微缺陷主要有微裂纹和微孔洞,当压力水渗透到微裂纹中时,可在微裂纹上产生附加张开应力。利用叠加原理,对计及微裂纹内水压力的岩石类材料在三轴压缩应力下的响应特性进行分解。考虑无限大体深埋椭圆形裂纹在远场三维压缩应力下的变形、扩展和偏折,得到代表性单元中任意空间取向的单个闭合椭圆形微裂纹及其偏折微裂纹引起的附加柔度张量。假设三轴压缩下,代表性单元渗透特性变化主要取决于偏折微裂纹扩展所引起的法向开度变化,结合达西定律和立方定理,推导出单个偏折微裂纹的附加渗透张量表达式。采用Taylor方法考虑微裂纹系统对代表性单元变形和渗透性影响,利用概率密度函数得到三轴压缩下岩石类材料的三维细观损伤–渗流耦合本构模型。数值计算表明采用本模型的计算结果与试验结果吻合较好。 | 曹林卫 彭向和 杨春和 任中俊 | 2009 | 岩石力学与工程学报2009，28，11： | 6 |
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