Head shape recognition of debris cloud producedby normal impact of spherical projectile

An Kai

doi:10.11883/1001-1455(2014)04-0404-05

Volume 34 Issue 4

Sep. 2014

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An Kai. Head shape recognition of debris cloud producedby normal impact of spherical projectile[J]. Explosion And Shock Waves, 2014, 34(4): 404-408. doi: 10.11883/1001-1455(2014)04-0404-05

Citation:

An Kai. Head shape recognition of debris cloud producedby normal impact of spherical projectile[J]. Explosion And Shock Waves, 2014, 34(4): 404-408. doi: 10.11883/1001-1455(2014)04-0404-05

An Kai. Head shape recognition of debris cloud producedby normal impact of spherical projectile[J]. Explosion And Shock Waves, 2014, 34(4): 404-408. doi: 10.11883/1001-1455(2014)04-0404-05

Citation:

An Kai. Head shape recognition of debris cloud producedby normal impact of spherical projectile[J]. Explosion And Shock Waves, 2014, 34(4): 404-408. doi: 10.11883/1001-1455(2014)04-0404-05

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Head shape recognition of debris cloud producedby normal impact of spherical projectile

doi: 10.11883/1001-1455(2014)04-0404-05

An Kai^,

Shandong Aerospace Electro-technology Institute, Yantai 264003, Shandong, China

More Information

Corresponding author: An Kai, ankai2007@163.com
Received Date: 2012-12-26
Rev Recd Date: 2013-03-08
Publish Date: 2014-07-25

Abstract

Abstract

There are various models of the debris cloud produced by normal impact of spherical projectile, but a common ground of the models is that the head shape of the debris cloud is ellipsoidal. In order to identify the head shape of the debris cloud, a new method was presented, which extracts the edge of the debris cloud image, searches for the optimal quadratic function fitting of the edge, and then adjudge the head shape according to fitting results. The optimal fitting algorithm of quadratic function was given as well. Based on four of debris cloud images of references, the recognition was carried out after extraction of their head shape and the optimal quadratic function fitting, and the results show that there are three images with parabolic head shape, one image with elliptic head shape. Thus, the head shape of debris clouds includes not only the rotation ellipsoid, but also the rotation paraboloid.
- solid mechanics,
- recognition,
- edge,
- head shape,
- image,
- fitting

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References(13)

References

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