Dynamics of shallow impact cratering

被引：75

作者：

Ambroso, MA ^{[1
]}

Kamien, RD

Durian, DJ

机构：

[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[2] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

来源：

PHYSICAL REVIEW E | 2005年 / 72卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevE.72.041305

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We present data for the time dependence of wooden spheres penetrating into a loose noncohesive packing of glass beads. The stopping time is a factor of 3 longer than the time d/v(0) needed to travel the total penetration distance d at the impact speed v(0). The acceleration decreases monotonically throughout the impact. These kinematics are modeled by a position- and velocity-dependent stopping force that is constrained to reproduce prior observations for the scaling of the penetration depth with the total drop distance.

引用

页数：4

共 22 条

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