NDLI: Developing soil models for dynamic impact simulations

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Developing soil models for dynamic impact simulations

Content Provider	NASA Technical Reports Server (NTRS)
Author	Lyle, Karen H. Fasanella, Edwin L. Jackson, Karen E.
Copyright Year	2009
Description	This paper describes fundamental soils characterization work performed at NASA Langley Research Center in support of the Subsonic Rotary Wing (SRW) Aeronautics Program and the Orion Landing System (LS) Advanced Development Program (ADP). LS-DYNA(Registered TradeMark)1 soil impact model development and test-analysis correlation results are presented for: (1) a 38-ft/s vertical drop test of a composite fuselage section, outfitted with four blocks of deployable energy absorbers (DEA), onto sand, and (2) a series of impact tests of a 1/2-scale geometric boilerplate Orion capsule onto soil. In addition, the paper will discuss LS-DYNA contact analysis at the soil/structure interface, methods used to estimate frictional forces, and the sensitivity of the model to density, moisture, and compaction.
File Size	1207893
Page Count	21
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20090022374
Archival Resource Key	ark:/13960/t0vq7xc0j
Language	English
Publisher Date	2009-05-27
Access Restriction	Open
Subject Keyword	Structural Mechanics Landing Sites Aircraft Landing Compression Tests Computerized Simulation Spacecraft Landing Impact Tests Computer Programs Characterization Soils Dynamic Tests Axial Compression Loads Rotary Wing Aircraft Crash Landing Energy Absorption Crashworthiness Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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