Abstract:
:Antlion (Myrmeleon sagax) larvae live in sandy soil and possess the ability to enter soil quickly. In this article, the hierarchical structure of the nonsmooth surface of antlion larvae was obtained using a scanning electron microscope (SEM). Based on the results, a bionic nonsmooth structure model was established to investigate the friction and movement of soil particles above it. Then the relationship between drag reduction characteristics and the antlion larvae's nonsmooth structural surface was discussed, which would be helpful to design soil-engaging components. When the height of each nonsmooth structure is proportional to the square of their interval distance, and is proportional to the velocity of movement, it is shown that a nonsmooth structural surface contributes to improving the bulk coefficient of granular materials, which leads to substantial drag reduction.
journal_name
Microsc Res Techjournal_title
Microscopy research and techniqueauthors
Tong J,Wu B,Song Z,Gao Z,Sun J,Ma Y,Zhuang Jdoi
10.1002/jemt.23419subject
Has Abstractpub_date
2020-04-01 00:00:00pages
338-344issue
4eissn
1059-910Xissn
1097-0029journal_volume
83pub_type
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