NDLI: Impact of solids on composite materials

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Impact of solids on composite materials

Content Provider	NASA Technical Reports Server (NTRS)
Author	Chern, Tzong Martinez, Francisco Maldonado, Jerry Roschke, Paul N. McCord-Medrano, Johnnie Bronson, Arturo
Copyright Year	1987
Description	The failure modes of composite materials as a result of low velocity impact were investigated by simulating the impact with a finite element analysis. An important facet of the project is the modeling of the impact of a solid onto cylindrical shells composed of composite materials. The model under development will simulate the delamination sustained when a composite material encounters impact from another rigid body. The computer equipment was installed, the computer network tested, and a finite element method model was developed to compare results with known experimental data. The model simulated the impact of a steel rod onto a rotating shaft. Pre-processing programs (GMESH and TANVEL) were developed to generate node and element data for the input into the three dimensional, dynamic finite element analysis code (DYNA3D). The finite element mesh was configured with a fine mesh near the impact zone and a coarser mesh for the impacting rod and the regions surrounding the impacting zone. For the computer simulation, five impacting loads were used to determine the time history of the stresses, the scribed surface areas, and the amount of ridging. The processing time of the computer codes amounted from 1 to 4 days. The calculated surface area were within 6-12 percent, relative error when compated to the actual scratch area.
File Size	2413325
Page Count	83
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19880005633
Archival Resource Key	ark:/13960/t9091590v
Language	English
Publisher Date	1987-12-20
Access Restriction	Open
Subject Keyword	Composite Materials Cylindrical Shells Finite Element Method Failure Analysis Delaminating Failure Modes Solids Computerized Simulation Composite Structures Impact Loads Impact Damage Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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