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Dr. Gary A. Gabriele spent 4 years as a Captain in the U.S. Army Institute for Research in Management Information and Computer Science working in the area of software engineering. While in the Army, he completed his Ph.D. at Purdue in the area of design optimization. Following the Army, Dr. Gabriele worked for the Lockheed-Georgia company as an Associate Scientist in the Systems Design Department. His areas of responsibility were the development of optimization tools, and conceptual design tools for the design of large military transports. He came to Rensselaer in 1984 and has taught courses in design and design optimization. He was an associate editor for the ASME Transactions Journal of Mechanical Design, has been Conference Chairman of the ASME Design Automation conference and the ASME Computers in Engineering Conference, and is Chairman of the ComputersinEngineering Division of ASME.
Research Interests and Activities:
Major Interest: Design, Design Optimization, Design for Manufacture
Current research interests fall within two areas of engineering design, multidisciplinary design optimization of electronic packages and design of integral fasteners. Multidisciplinary Design Optimization (MDO) is a new approach to managing tradeoffs in complex design situations where conflicting design objectives drive the design in opposing directions. MDO tools provide quantitative characterization of the natural coupling that exists among contributing disciplines. Electronic package design involves many engineering disciplines and is an excellent example of a highly complex, multi-disciplinary design problem with complex interactions between the different elements of the design. This inevitably leads to tradeoffs and compromises for disciplines that need to optimize performance and producibility. This research will result in an approach for achieving design improvements by quantifying the interactions between the different disciplines involved in the design of an electronic package and incorporating them into an optimization procedure.
Integral or snap fasteners are features that provide attachment between parts through their deflection and elastic recovery. Snap joints typically use the deflection of a protrusion on one part to interlock into an undercut on the mating part. A key advantage of integral fasteners is that they are incorporated into existing parts thereby eliminating the need for separate fasteners. Because of this they have taken on a greater importance in modern product development when meeting design for assembly and manufacture goals. Currently the use of integral fasteners is considered a risk by many designers. To use integral fasteners in a design the designer must engineer each fastener which is not the case when using screws. The correction of a poor snap design usually requires costly, time consuming mold rework which can adversely affect a product's time to market. The specific goals of the research program are to develop an analytical approach for determining the optimal attachment strategy between two parts which will employ integral fastening, and to develop experimental and analytical methods for assessing the performance of an integral fastener.
Journal Articles:
Schuldt, S., Ragsdell, K.M., Gabriele, G.A., Sandgren, E.,
and Root, R.R., "Application of a New Penalty Function Method
to Design Optimization," ASME J. of Eng. Ind., 99, 31-36,
(1977). Beltracchi, T.J., and Gabriele, G.A., "An Investigation
of Pshenichnyi's Recursive Quadratic Programming Method for Engineering
Design," ASME J. of Mechanisms, Transmissions, and Automation
in Design, 109, No. 2, 248-256 (1987).
Gabriele, G.A., and Beltracchi, T.J., "Resolving Degeneracy
in the Generalized Reduce Gradient Method," ASME J. of Mechanisms,
Transmissions, and Automation in Design, 109, No. 2, 263-267
(1987).
Robertson, W.D., and Gabriele, G.A., "The Optimization
of a Disk Drive Actuator by Constrained Minimization Using the
Method of Multipliers", ASME J. of Mechanisms, Transmissions,
and Automation in Design, 110, No. 4, 452-458 (1988).
Beltracchi, T.J., and Gabriele, G.A., "A Hybrid Variable
Metric Update for the Recursive Quadratic Programming Method",
ASME Journal of Mechanical Design, 113, No. 3, 280- 285, Sept.
(1991).
Beltracchi, T.J., and Gabriele, G.A., "A Recursive Quadratic
Programming Based Method for Estimating Parameter Sensitivity
Derivatives," ASME Journal of Mechanical Design, 113, No.
4, 487-494, December (1991).
Renaud, J.E., and Gabriele, G.A., "Improved Coordination
in Nonhierarchic System Optimization," AIAA Journal, 31,
No. 12, 2367-2373 (1993).
Renaud, J.E., and Gabriele, G.A., "Approximation in Nonhierarchic
System Optimization," AIAA Journal, 32, No. 1, 198-205 (1994).
Gabriele, G.A., "Tolerances in Engineering Design Education",
Manufacturing Review, 7, No. 1, 63-71 (1994).
Peer Reviewed Conference Articles:
Martino, P., and Gabriele, G.A., "A Review of Tolerance Design Techniques for Computer Integrated Manufacturing", ASME Computers In Engineering 1987, 2, 343-350, 1987.
Robertson, W.D., and Gabriele, G.A., "The Optimization of a Disk Drive Actuator by Constrained Minimization Using the Method of Multipliers", Advances in Design Automation, ASME DE 10-1, 107-114, 1987.
Beltracchi, T.J., and Gabriele, G.A., "A RQP Based Method for Estimating Parameter Sensitivity Derivatives," Advances in Design Automation, ASME DE 14, 155-164, 1988.
Beltracchi, T.J., and Gabriele, G.A., "Observations on Extrapolations Using Parameter Sensitivity Derivatives," Advances in Design Automation, ASME DE 14, 165-174, 1988.
Beltracchi, T.J., and Gabriele, G.A., "RQSEN: A Pre/Post Processor for an RQP Based Optimization Package", Proceedings of ASME International Computers In Engineering Conference, 1, 503-510, 1989.
Scott, R.T., and Gabriele, G.A., "Computer Aided Tolerance Analysis of Parts and Assemblies", Advances in Design Automation, ASME DE 19-1, 29-36, 1989.
Martino, P., and Gabriele, G.A., "Application of Variational Geometry to the Analysis of Mechanical Tolerances", Advances in Design Automation, ASME DE 19-1, 19-28, 1989.
Martino, P., and Gabriele, G.A., "Estimating Jacobian and Constraint Matrices in Variational Geometry Systems", Advances in Design Automation, ASME DE 19-1, 79-86, 1989.
Beltracchi, T.J., and Gabriele, G.A., "A Hybrid Variable Metric Update for the Recursive Quadratic Programming Method", Advances in Design Automation, ASME DE 19-2, 45-52, 1989.
Renaud, J., and Gabriele, G.A., "Using the Generalized Reduced Gradient Method to Handle Equality Constraints Directly in a Multilevel Optimization", Advances in Design Automation, ASME DE 19-2, 7-14, 1989.
Gabriele, G.A., "The Application of Design for Assembly Principles to the Design of Aerospace Structures," Computers In Engineering, 1, Proceedings of the American Society of Mechanical Engineers International Computers in Engineering Conference, Boston, MA, 1990, pp. 225-232.
Gabriele, G.A., "Robotic Grip Determination from Solid Models", Computers In Engineering, 1 American Society of Mechanical Engineers, New York, NY, 1991, pp. 195- 200.
Gabriele G.A., and Serrano, A.M., "HyperGear: An Object Oriented Design Program for Single Stage Gear Box Design," Computers In Engineering, 1, American Society of Mechanical Engineers, New York, NY, 1991, pp. 421-432.
Renaud, J.E., and Gabriele, G.A., "Sequential Global Approximation in Non-Hierarchic System Decomposition and Optimization" Advances in Design Automation, 1, American Society of Mechanical Engineers, New York, NY, 1991, pp. 191-200.
Renaud, J.E., and Gabriele, G.A., "Improved Coordination in Non-Hierarchic System Optimization," AIAA-92-2497-CP, 33rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, A Collection of Technical Papers, Part 5, Design Engineering, Design Optimization, Materials, Works-in-Progress, Published by AIAA, Washington, DC, Dallas, Texas, April 13-15, 1992, pp. 2730-2739.
Renaud, J.E., and Gabriele, G.A., "Approximation in Non-Hierarchic System Optimization," AIAA-92-4826-CP, Fourth AIAA/Air Force/NASA/OAI Symposium on Multidisciplinary Analysis and Optimization, A Collection of Technical Papers, Part 2, Published by AIAA, Washington, DC, Cleveland/Independence Ohio, September 21-23, 1992, pp. 1030-1039.
Korngold, J., Gabriele, G.A., Renaud, J.E., and Kott, G., "Application of MDO to Electronic Packaging," AIAA-92-4704-CP, 4th AIAA/Air Force/NASA/OAI Symposium on Multidis- ciplinary Analysis and Optimization, A Collection of Technical Papers, Part 2, Published by AIAA, Washington, DC, Cleveland/Independence OH, Sept. 21-23, 1992, pp. 1030-1039.
Korngold, J., and Gabriele, G.A., "Computer Aided Design of Cable for Large Computer Systems: A Case Study in Quick Prototyping", Computer in Engineering, 1, G.A. Gabriele, editor, ASME, New York, NY, 1992, pp. 311-318.
Gabriele, G., and Urban, C., "Optimal Heat Sink Design and Component Placement Using the Ellipsoid Method", ASME DE-Vol. 65-2, Advances in Design Automation, 2, Albuquerque, NM, 1993, pp. 605-614.
Kott, G., Gabriele, G.A., and Korngold, J., "Application of Multidisciplinary Design Optimization to the Power Stage Design of a Power Converter", ASME DE-Vol. 65-2, Advances in Design Automation, 2, Albuquerque, NM, 1993, pp. 359-366.
Kott, G., Gabriele, G., and Korngold, J., "Power Converter Design with Coupled Thermal Analysis using Multidisciplinary Design Optimization", ASME DE 69-2, ASME, New York, NY, 1994, pp. 179-186.
Korngold, J., and Gabriele, G., "A Survey of Electronic Package Manufacturing Analysis Methods Suitable for Integration With Multidisciplinary Optimization", ASME DE 69-2, ASME, New York, NY, 1994, pp. 205-212.
Gabriele, G.A. "Employing Reverse Engineering Projects in a Capstone Design Course," Advances in Capstone Education, Brigham Young University, Provo, UT, 1994, pp. 171- 176.
Gabriele, G.A., McCloskey, L.T., and Watson, J.A., "Guidelines for Forming and Building Student Design Teams," Advances in Capstone Education, Brigham Young University, Provo, UT, 1994, pp. 121-125.
Knapp, K.N., Lee, D., Messler, R.W., Luscher, A.F., Aksit, M.F., and Gabriele, G.A., "A Combined Analytic-Experimental Approach to the In-Plane Cantilever Hook Fastener Performance", ANTEC 95 Conference Proceedings, Society of Plastics Engineers, May 1995, pp. 1978-1983.
Luscher, A.F., Gabriele, G.A., and Bonenberger, P.R., "Attachment Strategy Guidelines for Integral Attachment Features", ANTEC 95 Conference Proceedings, Society of Plastics Engineers, May 1995, pp. 3771-3782.
Luscher, A.F., Gabriele, G.A., and Messler, R.W., "A Classification Scheme for Integral Attachment Features", ANTEC 95 Conference Proceedings, Society of Plastics Engineers, May 1995, pp. 3783-3787.
Mayer, R.R., and Gabriele, G.A., "A Design Tool Based on Integral Attachment Strategy Case Studies", ANTEC 95 Conference Proceedings, Society of Plastics Engineers, May 1995, pp. 3793-3798.
Wang, L., and Gabriele, G.A., "Failure Analysis of a Bayonet-Finger Snap Fit", ANTEC 95 Conference Proceedings, Society of Plastics Engineers, May 1995, pp. 3799-3804.
Conference Proceedings:
Wallace, D.M., and Gabriele, G.A., "Cam-Follower Programming with the Aid of Laplace Transformations," Proc. ASME Design Engineering Technical Conference, 1974.
Ragsdell, K.M., Gabriele, G.A., and Root, R.R., "Newton's Method: A Classical Technique of Contemporary Value," ASME Design Technology Transfer Conf. Proc., New York, October 1974.
Gabriele, G.A., "Implementation of the Generalized Reduced Gradient Method for Nonlinear Programming Problems," Proc. U.S. Army Numerical Analysis and Computer Conference, 1978.
Gabriele, G.A., "Application of the Generalized Reduced Gradient Method for Conceptual Aircraft Design," Proc. NASA Symposium on Recent Experiences in Multidisciplinary Analysis and Optimization, NASA CP-2327 Part I, 1984, pp. 65-85.
Beltracchi, T.J., and Gabriele, G.A., "A Comparison of Pshenichnyi's Recursive Quadratic Programming and the Generalized Reduced Gradient Method," ASME Codes: Recent Advances in PVP and Valve Technology-Operations Research Methods in Engineering, ASME PVP 109, 1986, pp. 159-165.
Darlow, M., Gabriele, G.A., and Steiner, M., "A Design for Assembly Case Study: Redesign of a Coffeemaker", Proceedings of the Ninth International Conference on Production Research, Cincinnati, pp. 2514-2521, Aug 1987.
Foster, J.A., and Gabriele, G.A., "Assessment of Current Design for Assembly Methods for the Automated Assembly of Aerospace Structures", FASTEC 87 Conference Proceedings, 1987, pp. 3-1 to 3-16.
Beltracchi, T.J., and Gabriele, G.A., "An Investigation of Using an RQP Based Method to Calculate Parameter Sensitivity Derivatives," Recent Experiences in Multidisciplinary Analysis and Optimization, NASA CP 3031 Part 2, 1988, pp. 673-696.
Gerhardt, L., and Gabriele, G.A., "Undergraduate Manufacturing Education - An Interdisciplinary Approach," Proceedings of 1988 Frontiers in Education Conference, Santa Barbara, CA.
Baum, J.P., and Gabriele, G.A., "Design for Assembly of Aerospace Structures: A Qualitative, Interactive Approach," Proceedings of 1989 SME Robots in Aerospace Manufacturing, February 1989, pp. MS89/158/1 - MS89/158/15.
Renaud, J.E., and Gabriele, G.A., "Direct Handling of Equality Constraints in Multilevel Optimization," Proceedings of the Third Air Force/NASA Symposium on Recent Advances in Multidisciplinary Analysis and Optimization, San Francisco, CA, 1990, pp. 36-43.
Gabriele, G.A., "Application of the Recursive Quadratic Programming Method to Engineering Optimization," Proceedings of the Joint NSF/NSC Conference on Recent Developments in Mechanical Design, Tainan, Taiwan, 1990, pp. 99-107.
Korngold, J., Gabriele, G.A., and Dickinson, J.E., "ROSEBUD: A Feature Based Design System Using an Object Oriented Approach", Proceedings of the Design Productivity International Conference, Vol. 1, Design Productivity Center, Univ. of Missouri at Rolla, 1991, pp. 319-324.
Gabriele G.A., and Dionne, P.J., "Automatic Determination of Robotic Gripping Positions Using Parts and Grippers Represented as Solid Models", Proceedings of the Design Productivity International Conference, Vol. 1, Design Productivity Center, Univ. of Missouri at Rolla, 1991, pp. 477-482.
Gabriele, G.A., Angeles, J., Liu, Z., and Faik, S., "Chapter 11: Optimization in Mechanisms", Proceedings of the First Forty Years of Modern Kinematics, University of Minnesota, 1991, pp. 11.1-11.30.
Gabriele, G.A., "A Perspective on Engineering Design Education: Where Do Tolerances Fit In?", Proceedings ASME 1993 International Forum on Dimensional Tolerancing and Metrology, ASME Press, New York, 1993.
Korngold, J., and Gabriele, G., "Integrating Design for Manufacturing of Electronic Packages in a Multidisciplinary Design Analysis and Optimization Framework", Proceedings, 5th AIAA/USAF/NASA/ISSO Symposium of Multidisciplinary Analysis and Optimization, Panama City, Florida, September, 1994, pp. 22-30.
Korngold, J., Gabriele, G., Hajela, P., and Sanderson, S., "Learning Environment for Multidisciplinary Optimization Over a Product Lifecycle", Proceedings, 5th AIAA/USAF/NASA/ISSO Symposium of Multidisciplinary Analysis and Optimization, Panama City, Florida, September, 1994, pp. 1098-1106.
Baxter, D., and Gabriele, G.A., "Application of Multidisciplinary Design Optimization to a Laptop Computer," Proceedings of the Technical Conference, IEPS, Wheaten, IL, 1994, pp. 86-94.
Proceedings Edited:
Gabriele, G.A., Editor, Advances in Design Automation-1991, Volumes 1&2, American Society of Mechanical Engineers, New York, NY, 1991.
Gabriele, G.A., Editor, Computers in Engineering - 1992, Volumes 1&2, American Society of Mechanical Engineers, New York, NY, 1992.
Book Chapters:
Gabriele, G.A., "The Generalized Reduced Gradient Method for Engineering Optimization," Engineering Design, ed. R. R. Levary, Elsevier Science Publishing Co., pp. 126-144, 1988.
Gabriele, G.A., "Optimization in Mechanisms", Modern Kinematics, edited by Arthur Erdman, John Wiley & Sons, New York, 1993.