Jetting during oblique impacts of spherical impactors
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Wakita, Shigeru
[1
,4
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Johnson, Brandon C.
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Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USAPurdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
Johnson, Brandon C.
[1
,2
]
Denton, C. Adeene
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Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USAPurdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
Denton, C. Adeene
[1
]
Davison, Thomas M.
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Imperial Coll London, Dept Earth Sci & Engn, London, EnglandPurdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
Davison, Thomas M.
[3
]
机构:
[1] Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA
[2] Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA
During the early stages of an impact a small amount material may be jetted and ejected at speeds exceeding the impact velocity. Jetting is an important process for producing melt during relatively low velocity impacts. How impact angle affects the jetting process has yet to be fully understood. Here, we simulate jetting during oblique impacts using the iSALE shock physics code. Assuming both the target and impactor have the same composition (dunite), we examine the jetted material which exceeds the impact velocity. Our results show that oblique impacts always produce more jetted ejecta than vertical impacts, except for grazing impacts with impact angles <15 degrees. A 45 degrees impact with an impact velocity of 3 km/s produces jetted material equal to similar to 7% of the impactor mass. This is 6 times the jetted mass produced by a vertical impact with similar impact conditions. We also find that the origin of jetted ejecta depends on impact angle; for impact angles less than 45 degrees, most of the jet is composed of impactor material, while at higher impact angles the jet is dominated by target material. Our findings are consistent with previous experimental work. In all cases, jetted materials are preferentially distributed downrange of the impactor.
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Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R ChinaSouthwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
Liu, Xin
Deng, Yongjun
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Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
Key Lab Sichuan Prov, Shock & Vibrat Engn Mat & Struct, Mianyang 621010, Peoples R ChinaSouthwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
Deng, Yongjun
Wen, Ken
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China Aerodynam Res & Dev Ctr, Hyperveloc Aerodynam Inst, Mianyang, Sichuan, Peoples R ChinaSouthwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
Wen, Ken
Yao, Yong
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Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
Key Lab Sichuan Prov, Shock & Vibrat Engn Mat & Struct, Mianyang 621010, Peoples R ChinaSouthwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
机构:
Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R ChinaSouthwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
Liu, Xin
Deng, Yongjun
论文数: 0引用数: 0
h-index: 0
机构:
Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
Shock & Vibrat Engn Mat & Struct Key Lab Sichuan P, Mianyang, Peoples R ChinaSouthwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
Deng, Yongjun
Wen, Ken
论文数: 0引用数: 0
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China Aerodynam Res & Dev Ctr, Hyperveloc Aerodynam Inst, Mianyang, Sichuan, Peoples R ChinaSouthwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
Wen, Ken
Yao, Yong
论文数: 0引用数: 0
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Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China
Shock & Vibrat Engn Mat & Struct Key Lab Sichuan P, Mianyang, Peoples R ChinaSouthwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang, Peoples R China