Design of microstructures and structures with negative linear compressibility in certain directions

C. N. Weng, K. T. Wang, T. Chen

研究成果: Conference contribution

15 引文 斯高帕斯(Scopus)

摘要

The linear compressibility of a solid is defined as the relative decrease in length of a line when the solid is subjected to unit hydrostatic pressure. Materials with a negative linear or area compressibility could have interesting technological applications. However, in the case of homogeneous materials only rare crystal phases exhibit this effect. In particular, for isotropic or cubic solids the linear compressibility is known to be isotropic and positive, namely a sphere of a cubic or isotropic crystal under hydrostatic pressure remains a sphere. For less symmetric solids, it generally varies with the direction n. Here we derive explicit expressions of the stationary values (maximum and minimum) of linear compressibility for single phase solids with monoclinic, orthotropic, tetragonal, trigonal, and hexagonal symmetry. A list of crystals that may exhibit negative linear compressibility in certain directions is outlined. Next, by assembling a two-component material, we propose microstructure networks to achieve such a property. Numerical simulations, based on a refined finite element method, are provided.

原文English
主出版物標題Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
發行者Trans Tech Publications
頁面807-814
頁數8
ISBN(列印)0878493999, 9780878493999
DOIs
出版狀態Published - 2008
事件7th International Conference on Fracture and Strength of Solids, FEOFS 2007 - Urumqi, China
持續時間: 2007 八月 272007 八月 29

出版系列

名字Advanced Materials Research
33-37 PART 2
ISSN(列印)1022-6680

Other

Other7th International Conference on Fracture and Strength of Solids, FEOFS 2007
國家China
城市Urumqi
期間07-08-2707-08-29

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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