Crater shape as a possible record of the impact environment of metallic bodies: Effects of temperature, impact velocity and impactor density

Ogawa, Ryo; Nakamura, Akiko; Suzuki, Ayako; Hasegawa, Susumu

doi:10.1016/j.icarus.2021.114410

Cited by 9 publications

(8 citation statements)

References 46 publications

(78 reference statements)

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“…The JC strength model and the constants used for I‐90, I‐94 and Gibeon as illustrated here were used both in CTH and iSALE. The various colors indicate different target materials from our experiments as well as Armco Iron, which has been used in previous studies as an analog for Psyche (Ogawa et al., 2021; Raducan et al., 2020). Filled points are cooled targets while open points represent room temperature targets.…”

Section: Discussionmentioning

confidence: 99%

“…This work made use of experimentally‐determined and derived JC strength model parameters. Similar studies into Fe‐Ni and Psyche‐analogous materials have used room‐temperature JC input parameters for Armco Iron (e.g., Raducan et al., 2020) or cooled JC data for dissimilar meteorites (e.g., Henbury JC constants for Gibeon as in Ogawa et al., 2021). Given that Marchi et al.…”

Section: Discussionmentioning

confidence: 99%

“…This work made use of experimentally-determined and derived JC strength model parameters. Similar studies into Fe-Ni and Psyche-analogous materials have used room-temperature JC input parameters for Armco Iron (e.g., Raducan et al, 2020) or cooled JC data for dissimilar meteorites (e.g., Henbury JC constants for Gibeon as in Ogawa et al, 2021). Given that Marchi et al (2020) reported that target temperature has measurable effects on strength, where cooled targets are up to 20% stronger than room temperature targets, we emphasize that measuring the strength and finding the JC parameters at a cold temperature (77 K) is necessary to include the temperature dependence portion of the JC strength model (e.g., Equation 1) for cases where the target reference temperature is greater than the target surface temperature.…”

Section: Jc Strength Constantsmentioning

confidence: 99%

“…As such, the selection of the Psyche mission triggered an increased interest in the scientific community to better understand cratering into metallic materials relevant to asteroids. These impact experiments have provided preliminary insight as to crater dimensions, depth, and overall morphology for iron meteorites and their lab made proxy Fe‐Ni alloys, showing that cratering into Fe‐Ni targets is remarkably different from rocky targets (e.g., Libourel et al., 2019; Marchi et al., 2020; Ogawa et al., 2021; Raducan et al., 2020). Additional metallic targets, such as aluminum and copper, have been investigated (e.g., Burchell & Mackay, 1998; Daly & Schultz, 2018; Hernandez et al., 2006; Horz et al., 1995), but their non‐asteroidal compositions requires further consideration for their applicability to Psyche.…”

Section: Introductionmentioning

confidence: 99%

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Benchmarking iSALE and CTH Shock Physics Codes to In Situ High‐Velocity Impact Experiments Into Fe‐Ni Targets

Alexander

Marchi

Chocron

et al. 2022

Earth and Space Science

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Cratering is a prominent evolutionary process on asteroids. Crater morphologies, regolith generation, bulk fracturing and projectile implantation are all examples of asteroidal surface evolution resulting from impact processes. The characterization of these processes on metal‐rich bodies has become a priority due to the upcoming NASA Psyche mission, poised to study the likely metal‐rich 225‐km main belt asteroid, (16) Psyche. Small‐scale impact experiments into metals (e.g., iron, aluminum, copper, steel) have shown that crater morphologies into these materials are different than rocky targets—exhibiting notable distinctive features such as raised, sharp rims, and deeper cavities. In this work, we determine strength constants for different metals used in prior impact experiments, namely manufactured Fe‐Ni materials and the Gibeon iron meteorite at 77 K. These parameters have been used as inputs for the Johnson and Cook (1983) strength model in a suite of numerical simulations reproducing impact experiments. Using the Johnson and Cook strength model and our laboratory‐derived material constants, we find that it is possible to closely match small‐scale experimental crater diameters and depths using iSALE and CTH shock physics codes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Jc Strength Constantsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Benchmarking iSALE and CTH Shock Physics Codes to In Situ High‐Velocity Impact Experiments Into Fe‐Ni Targets

Alexander

Marchi

Chocron

et al. 2022

Earth and Space Science

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“…Following endeavors on describing, understanding, and modeling the surface evolution of iron-rich asteroids subject to impacts at typical asteroid impact speeds (Libourel et al 2019;Marchi et al 2020;Maurel et al 2020;Ogawa et al 2021;Raducan et al 2020), we present here new results obtained from hypervelocity impact experiments on mesosiderites. Mesosiderites are one of the most enigmatic groups of differentiated meteorites (Mittlefehldt 1990(Mittlefehldt , 1994.…”

Section: Introductionmentioning

confidence: 99%

V-type Asteroids as the Origin of Mesosiderites

et al. 2023

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We present the results of a campaign of hypervelocity impact experiments on natural mesosiderite targets, using representative main asteroid belt impact speeds. The objective is to document further the surface evolution of iron-rich asteroids. In contrast with iron meteorites, we demonstrate the fragile behavior of mesosiderite at impact since experiments result in both cratering and catastrophic disruption. The behavior of metal-rich asteroids at impact is thus highly influenced by the original ratio of metal/silicate. A visible to near-infrared spectral analysis shows that the pyroxene silicate signature of impacted mesosiderites, or their ejecta, is fully preserved. Our results thus rule out a mesosiderite hypothesis for the very nature of M/X-type asteroids including (16) Psyche, despite a small fraction of its surface possibly being covered by mesosiderite-like materials. Finally, we address the question of whether mesosiderites and howardite–eucrite–diogenite (HED) meteorites are genetically linked to (4) Vesta or other differentiated asteroids in the main belt based on their spectral similarity.

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Benchmarking iSALE and CTH shock physics codes to in situ high-velocity impact experiments into Fe-Ni targets

Alexander¹,

Marchi²,

Chocron³

et al. 2021

Preprint

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Crater shape as a possible record of the impact environment of metallic bodies: Effects of temperature, impact velocity and impactor density

Cited by 9 publications

References 46 publications

Benchmarking iSALE and CTH Shock Physics Codes to In Situ High‐Velocity Impact Experiments Into Fe‐Ni Targets

Benchmarking iSALE and CTH Shock Physics Codes to In Situ High‐Velocity Impact Experiments Into Fe‐Ni Targets

V-type Asteroids as the Origin of Mesosiderites

Benchmarking iSALE and CTH shock physics codes to in situ high-velocity impact experiments into Fe-Ni targets

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