Date of Award

Summer 1997

Document Type

Thesis

Degree Name

Master of Science (MS)

Department

Mechanical & Aerospace Engineering

Program/Concentration

Engineering Mechanics

Committee Director

Norman F. Knight, Jr.

Committee Member

Donald L. Kunz

Committee Member

Chuh Mei

Call Number for Print

Special Collections; LD4331.E57 B368

Abstract

Low-speed impact response of laminated composite panels is simulated without material damage using the DYNA3D finite element analysis code. The DYNA3D code is a nonlinear transient dynamics simulation tool with a contact algorithm for impact. By gaining a more comprehensive understanding of this dynamic impact event, this work is meant to contribute to improving designs for damage tolerance and residual strength by providing modeling and analysis guidelines for the analyst.

Structural modeling of the laminate and the impact event are found to be important factors for the analyst to consider. Since DYNA3D uses an explicit formulation, problem size is constrained only by the available computer memory. Modeling of the laminate is affected by the number of integration points through the thickness. Guidelines for laminate modeling are identified and verified through numerical studies. The results appear to be more sensitive to the contact modeling in terms of predicting the interface force magnitude and "footprint." DYNA3D simulations provide additional local response characteristics and overall good correlation with previously reported results.

Rights

In Copyright. URI: http://rightsstatements.org/vocab/InC/1.0/ This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).

DOI

10.25777/pnyk-9v68

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