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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2005, Vol. 6 Issue (10): 15-    DOI: 10.1631/jzus.2005.A1095
    
Porous structures of natural materials and bionic design
ZHANG Jian-zhong, WANG Jiu-gen, MA Jia-ju
Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract  This investigation and morphology analysis of porous structure of some kinds of natural materials such as chicken eggshell, partridge eggshell, pig bone, and seeds of mung bean, soja, ginkgo, lotus seed, as well as the epidermis of apples, with SEM (Scanning Electronic Microscope) showed that natural structures’ pores can be classified into uniform pores, gradient pores and multi pores from the viewpoint of the distribution variation of pore density, size and geometry. Furthermore, an optimal design of porous bearings was for the first time developed based on the gradient configuration of natural materials. The bionic design of porous structures is predicted to be widely developed and applied in the fields of materials and mechanical engineering in the future.

Key words： Natural materials      Porous structure      Bionic design      SEM     
Received: 22 March 2005     
CLC:  TH11  
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ZHANG Jian-zhong
WANG Jiu-gen
MA Jia-ju
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ZHANG Jian-zhong, WANG Jiu-gen, MA Jia-ju. Porous structures of natural materials and bionic design. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2005, 6(10): 15-.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2005.A1095     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2005/V6/I10/15

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