Uri Malamud, Christoph M. Schafer, Irina Luciana San Sebastian, Maximilian Timpe, Karl Alexander Essink, Christopher Kreuzig, Gerwin Meier, Jürgen Blum, Hagai B. Perets, Christoph Burger
{"title":"新的与过去的二氧化硅挤压曲线实验:应用于 Dimorphos 基准冲击模拟","authors":"Uri Malamud, Christoph M. Schafer, Irina Luciana San Sebastian, Maximilian Timpe, Karl Alexander Essink, Christopher Kreuzig, Gerwin Meier, Jürgen Blum, Hagai B. Perets, Christoph Burger","doi":"arxiv-2408.04014","DOIUrl":null,"url":null,"abstract":"Crush curves are of fundamental importance to numerical modeling of small and\nporous astrophysical bodies. The empirical literature often measures them for\nsilica grains, and different studies have used various methods, sizes,\ntextures, and pressure conditions. Here we review past studies and supplement\nfurther experiments in order to develop a full and overarching understanding of\nthe silica crush curve behavior. We suggest a new power-law function that can\nbe used in impact simulations of analog materials similar to micro-granular\nsilica. We perform a benchmarking study to compare this new crush curve to the\nparametric quadratic crush curve often used in other studies, based on the\nstudy case of the DART impact onto the asteroid Dimorphos. We find that the\ntypical quadratic crush curve parameters do not closely follow the silica\ncrushing experiments, and as a consequence they under (over) estimate\ncompression close (far) from the impact site. The new crush curve presented\nhere, applicable to pressures between a few hundred Pa and up to 1.1 GPa, might\ntherefore be more precise. Additionally, it is not calibrated by case-specific\nparameters, and can be used universally for comet- or asteroid-like bodies,\ngiven an assumed composition similar to micro-granular silica.","PeriodicalId":501270,"journal":{"name":"arXiv - PHYS - Geophysics","volume":"30 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"New versus past silica crush curve experiments: application to Dimorphos benchmarking impact simulations\",\"authors\":\"Uri Malamud, Christoph M. Schafer, Irina Luciana San Sebastian, Maximilian Timpe, Karl Alexander Essink, Christopher Kreuzig, Gerwin Meier, Jürgen Blum, Hagai B. Perets, Christoph Burger\",\"doi\":\"arxiv-2408.04014\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Crush curves are of fundamental importance to numerical modeling of small and\\nporous astrophysical bodies. The empirical literature often measures them for\\nsilica grains, and different studies have used various methods, sizes,\\ntextures, and pressure conditions. Here we review past studies and supplement\\nfurther experiments in order to develop a full and overarching understanding of\\nthe silica crush curve behavior. We suggest a new power-law function that can\\nbe used in impact simulations of analog materials similar to micro-granular\\nsilica. We perform a benchmarking study to compare this new crush curve to the\\nparametric quadratic crush curve often used in other studies, based on the\\nstudy case of the DART impact onto the asteroid Dimorphos. We find that the\\ntypical quadratic crush curve parameters do not closely follow the silica\\ncrushing experiments, and as a consequence they under (over) estimate\\ncompression close (far) from the impact site. The new crush curve presented\\nhere, applicable to pressures between a few hundred Pa and up to 1.1 GPa, might\\ntherefore be more precise. Additionally, it is not calibrated by case-specific\\nparameters, and can be used universally for comet- or asteroid-like bodies,\\ngiven an assumed composition similar to micro-granular silica.\",\"PeriodicalId\":501270,\"journal\":{\"name\":\"arXiv - PHYS - Geophysics\",\"volume\":\"30 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-08-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - Geophysics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2408.04014\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Geophysics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2408.04014","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
New versus past silica crush curve experiments: application to Dimorphos benchmarking impact simulations
Crush curves are of fundamental importance to numerical modeling of small and
porous astrophysical bodies. The empirical literature often measures them for
silica grains, and different studies have used various methods, sizes,
textures, and pressure conditions. Here we review past studies and supplement
further experiments in order to develop a full and overarching understanding of
the silica crush curve behavior. We suggest a new power-law function that can
be used in impact simulations of analog materials similar to micro-granular
silica. We perform a benchmarking study to compare this new crush curve to the
parametric quadratic crush curve often used in other studies, based on the
study case of the DART impact onto the asteroid Dimorphos. We find that the
typical quadratic crush curve parameters do not closely follow the silica
crushing experiments, and as a consequence they under (over) estimate
compression close (far) from the impact site. The new crush curve presented
here, applicable to pressures between a few hundred Pa and up to 1.1 GPa, might
therefore be more precise. Additionally, it is not calibrated by case-specific
parameters, and can be used universally for comet- or asteroid-like bodies,
given an assumed composition similar to micro-granular silica.