Simulation of agglutinates formation

Chotipong Somrit, Masami Nakagawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Micrometeorites that continuously impact on the lunar surface are responsible for creating agglutinates which are uniquely irregular, jagged and high porosity. Due to process of agglutinates formation, the amount of agglutinates in lunar soil can be used to estimate the exposure history of the soil by using a lunar soil evolution model. Using commercially available simulation software called the PFC2D™, we can simulate the mechanical behavior of a system of particles in general. In the companion paper, the lunar agglutinates are simulated using the parallel-bond model which allows us to incorporate the resistance to moment, and the same approach is taken here. In this paper, we study the formation of agglutinates by simulating the initial lunar surface soils with no agglutinates, and then generating small particles (<20 μm for example) with very high velocities (>5 km/sec for example) impacting the surface lunar soil particles. The kinetic energy associated with an impacting micrometeorite is high enough to fragment/pulverize the coarse particles and the agglutinates and also produce the crater ejecta. In this analysis the equation developed by O'Keefe and Ahrens is used to estimate the volume of melt. Copyright ASCE 2006.

Original languageEnglish
Title of host publicationEarth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments
Number of pages1
DOIs
Publication statusPublished - Dec 28 2006
Externally publishedYes
EventEarth and Space 2006 - 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments - League City/Houston, TX, United States
Duration: Mar 5 2006Mar 8 2006

Publication series

NameEarth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments
Volume2006

Other

OtherEarth and Space 2006 - 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments
CountryUnited States
CityLeague City/Houston, TX
Period3/5/063/8/06

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Somrit, C., & Nakagawa, M. (2006). Simulation of agglutinates formation. In Earth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments (Earth and Space 2006 - Proceedings of the 10th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments; Vol. 2006). https://doi.org/10.1061/40830(188)35