Investigation of Effective Material Properties of Stony MeteoritesTo assess the threat posed by an asteroid entering Earths atmosphere, one must predict if, when, and how it fragments during entry. A comprehensive understanding of the Asteroid material properties is needed to achieve this objective. At present, the meteorite material found on earth are the only objects from an entering asteroid that can be used as representative material and be tested inside a laboratory setting. Therefore, unit cell models are developed to determine the effective material properties of stony meteorites and in turn deduce the properties of asteroids. The unit cell is representative volume that accounts for diverse minerals porosity, and matrix composition inside a meteorite. The various classes under investigation includes H-class, L-class, and LL-class chondrites. The effective mechanical properties such as Young's Modulus and Poisson's Ratio of the unit cell are calculated by performing several hundreds of Monte-Carlo simulations. Terrestrial analogs such as Basalt and Gabbro are being used to validate the unit cell methodology.
Document ID
20190025896
Acquisition Source
Ames Research Center
Document Type
Presentation
Authors
Agrawal, Parul (Analytical Mechanics Associates, Inc. Moffett Field, CA, United States)
Carlozzi, Alex (Analytical Mechanics Associates, Inc. Moffett Field, CA, United States)
Bryson, Kathryn Lynn (Bay Area Environmental Research Inst. Moffett Field, CA, United States)
Date Acquired
June 12, 2019
Publication Date
October 23, 2016
Subject Category
Lunar And Planetary Science And ExplorationComputer Programming And Software