Tip cross-sectional geometry predicts the penetration depth of stone-tipped projectiles
Tip cross-sectional geometry predicts the penetration depth of stone-tipped projectiles
复制标题
尖端横截面几何形状预测石头射弹的穿透深度
DOI:
10.1038/s41598-020-70264-y
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发表时间:
2020
影响因子:
4.6
通讯作者:
Eren, Metin I.
中科院分区:
文献类型:
--
作者:
Sitton, Jase;Story, Brett;Buchanan, Briggs;Eren, Metin I.
Understanding prehistoric projectile weaponry performance is fundamental to unraveling past humans’ survival and the evolution of technology. One important debate involves how deeply stone-tipped projectiles penetrate a target. Theoretically, all things being equal, projectiles with smaller tip cross-sectional geometries should penetrate deeper into a target than projectiles with larger tip cross-sectional geometries. Yet, previous experiments have both supported and questioned this theoretical premise. Here, under controlled conditions, we experimentally examine fourteen types of stone-tipped projectile each possessing a different cross-sectional geometry. Our results show that both tip cross-sectional area (TCSA) and tip cross-sectional perimeter (TCSP) exhibit a strong, significant inverse relationship with target penetration depth, although TCSP’s relationship is stronger. We discuss why our experimental results support what is mathematically predicted while previous experiments have not. Our results are consistent with the hypothesis that when stone tip cross-sectional geometries become smaller over time in particular contexts, this evolution may be due to the selection of these attributes for increased penetration.
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DOI:
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发表时间:
2017
期刊:
影响因子:
--
作者:
Michelle R. Bebber;S. Lycett;M. Eren
通讯作者:
M. Eren
DOI:
--
发表时间:
2019
期刊:
Journal of Archaeological Science: Reports
影响因子:
--
作者:
Corey Lowe;Andrew Kramer;Michael Wilson;R. Meindl;Linda B. Spurlock;M. Eren
通讯作者:
M. Eren
影响因子:
2.8
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W. Engelbrecht
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W. Engelbrecht
DOI:
--
发表时间:
2016
期刊:
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作者:
A. Milks;R. Dinnis;M. Pope
通讯作者:
M. Pope
DOI:
--
发表时间:
2017
期刊:
影响因子:
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作者:
J. Whittaker;Devin B. Pettigrew;Ryan J. Grohsmeyer
通讯作者:
Ryan J. Grohsmeyer