TAILIEUCHUNG - Simulating fatigue crack growth in spiral bevel gears

This research project was motivated by the possibility of using fracture mechanics to assist in optimizing gear design. The primary goal is to develop a state-of-the-art capability for modeling three-dimensional crack propagation in gears using boundary element method, finite element method, and fracture mechanics. It is being conducted by a grant between Cornell University and the NASA-Glenn Research Center (formerly known as Lewis Research Center). | NASA CR 2000-210062 ARL-CR-451 Simulating Fatigue Crack Growth in Spiral Bevel Gears Lisa E. Spievak Paul A. Wawrzynek and Anthony R. Ingraffea Cornell University Ithaca New York May 2000 The NASA STI Program Office . in Profile Since its founding NASA has been dedicated to the advancement of aeronautics and space science. The NASA Scientific and Technical Information STI Program Office plays a key part in helping NASA maintain this important role. The NASA STI Program Office is operated by Langley Research Center the Lead Center for NASA s scientific and technical information. The NASA STI Program Office provides access to the NASA STI Database the largest collection of aeronautical and space science STI in the world. The Program Office is also NASA s institutional mechanism for disseminating the results of its research and development activities. These results are published by NASA in the NASA STI Report Series which includes the following report types TECHNICAL PUBLICATION. Reports of completed research or a major significant phase of research that present the results of NASA programs and include extensive data or theoretical analysis. Includes compilations of significant scientific and technical data and information deemed to be of continuing reference value. NASA s counterpart of peer-reviewed formal professional papers but has less stringent limitations on manuscript length and extent of graphic presentations. TECHNICAL MEMORANDUM. Scientific and technical findings that are preliminary or of specialized interest . quick release reports working papers and bibliographies that contain minimal annotation. Does not contain extensive analysis. CONTRACTOR REPORT. Scientific and technical findings by NASA-sponsored contractors and grantees. CONFERENCE PUBLICATION. Collected papers from scientific and technical conferences symposia seminars or other meetings sponsored or cosponsored by NASA. SPECIAL PUBLICATION. Scientific technical or historical information from .

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