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1.      Oza, K. and Gea, H. C., 2004, Two-Level Approximation Method for Reliability Based Design Optimization, International Journal of Vehicle Design, (accepted for publication)

2.      Jung, D. and Gea, H. C., 2004, Compliant Mechanism Design with Non-linear Materials Using Topology Optimization, International Journal of Mechanics and Materials in Design, (in print).

3.      Jung, D. and Gea, H. C., 2004, Topology Optimization of Nonlinear Structures, Finite Elements in Analysis and Design, Vol. 40, 11, pp. 1417-1427. (PDF)

4.      Gea, H. C., 2004, Application of Regional Strain Energy in Compliant Structure Design for Energy Absorption, Structural and Multidisciplinary Optimization, Vol. 26, 3-4, pp. 224-228. (PDF)

5.      Gea, H. C. and Luo, J., 2004, On Stress Based and Strain Based Method for Prediction of Optimal Orientation of Orthotropic Materials, Structural and Multidisciplinary Optimization, Vol. 26, 3-4, pp. 229-234. (PDF)

6.      Luo, J. and Gea, H. C., 2003, Optimal Stiffener Design for Interior Sound Reduction Using a Topology Optimization Based Approach, ASME Journal of Vibration and Acoustics, Vol. 125, pp. 267-273. (PDF)

7.      Gea, H. C. and Luo, J., 2001, Topology optimization of structures with geometrical nonlinearities, Computers and Structures, Vol. 79/20-21, No. 5, pp. 1977-1985. (PDF)

8.      Chickermane, H., Gea, H. C., Yang R. J. and Chuang C. H., 1999, Optimal Fastener Pattern Design Considering Bearing Loads, Journal of Structural Optimization, Vol. 17, No. 2/3, pp. 140-146. (PDF)

9.      Gea, H. C. and Luo, J., 1999, Automated Optimal Stiffener Pattern Design, International Journal of Mechanics of Structures and Machines, Vol. 27, No. 3, pp.275-292. (PDF)

10.  Luo, J. and Gea, H. C., 1998, A Systematic Topology Optimization Approach for Bead Pattern Design, Journal of Structural Optimization, 16, pp. 280-288. (PDF)

11.  Luo, J. and Gea, H. C., 1998, Optimal Bead Orientation in 3D Shell/Plate Structures, Finite Elements in Analysis and Design, 31, 1, pp. 51-71. (PDF)

12.  Jain, S. and Gea, H. C., 1998, Two-Dimensional Packing Problems Using Genetic Algorithm, Engineering with Computers, 14, pp. 206-213. (PDF)

13. Gea, H. C. and Ramamurthy, R., 1998, Blank Design Optimization on Deep Drawing of Square Shells, IIE Transactions, Design and Manufacturing, 30, pp. 913-921. (PDF)

14. Dong, Y. and Gea, H. C., 1998, A Non-Hypersingular Boundary Integral Formulation for Displacement Gradients in Linear Elasticity, Acta Mechanica, 129, pp. 187-205. (PDF)

15. Luo, J. and Gea, H. C. 1998, Optimal Orientation of Orthotropic Materials Using an Energy Based Method, Journal of Structural Optimization, Vol. 15, pp. 230-235.  (PDF)

16. Luo J.H. and Gea H.C. 1997, Optimal Stiffener Design for Interior Sound Reduction, 1997, SAE Transactions, Journal of Passenger Cars, No. 971542. (PDF)

17. Chickermane, H. and Gea, H. C., 1997, Design of Multi-Component Structural Systems for Optimal Layout Topology and Joint Locations, Engineering with Computers, 13, pp. 235-243. (PDF)

18. Luo, J. and Gea, H. C., 1997, Modal Sensitivity Analysis of Coupled Acoustic-Structural Systems, ASME Journal of Vibration and Acoustics, Vol. 119, No. 4, pp. 545-550 (PDF)

19. Gea, H. C. and Fu, Y., 1997, Optimal 3-D Stiffener Design with Frequency Considerations, Advances in Engineering Software, Vol. 28, No. 8, pp. 525-531. (PDF)

20. Chickermane, H. and Gea, H. C., 1996, Structural Optimization Using a New Local Approximation Method, International Journal for Numerical Methods in Engineering, Vol. 39, No. 5, pp. 829 – 846. (PDF)

21. Gea, H. C., 1996, Topology Optimization: A New Micro-Structural Based Design Domain Method, Computers and Structures, Vol. 61, No. 5, pp. 781 – 788. (PDF)

22. Chickermane, H. and Gea, H. C., 1996, A Systematic Design Methodology for Generating the Optimal Repairs of Aging Aircraft, Finite Elements in Analysis and Design, Vol. 23, pp. 365 – 379. (PDF)

23. Jain, S. and Gea, H. C., 1996, PCB Layout Design Using a Genetic Algorithm, ASME Journal of Electronic Packaging, Vol. 118, pp. 11 – 15. (PDF)

24. Gea, H. C. and Fu, Y., 1995, 3-D Shell Topology Optimization Using a Design Domain Method, SAE Transactions, Journal of Passenger Car, No. 951105, Vol. 104-2, pp. 1983 – 1989. (PDF)

25. Chirehdast, M., Gea, H. C., Kikuchi, N. and Papalambros, P., 1994, Structural Configuration Examples of an Integrated Optimal Design Process, ASME Journal of Mechanical Design, Vol. 116, pp. 997 – 1012. (PDF)

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1.    Jung, D. and Gea, H. C., 2006, Design of Energy Absorbing Structure using Topology Optimization with a Multi-material Model, Structural and Multidisciplinary Optimization, 32, 3, pp. 251-257.

2.   Gea, H. C. and Oza, K., 2006, Two-Level Approximation Method for Reliability Based Design Optimization, International Journal of Materials and Product Technology, 25, 1-3, pp. 99-111

3.   Gea, H. C. and Oza, K., 2006, Prediction of Probabilistic Design Models for Uncertainty Propagation, The 2006 SAE World Congress,06M-462

4.   Zheng, B. and Gea, H. C., 2006, Topology Optimization Considering Gravitational and Centrifugal Forces, ASME Design Engineering Technical Conferences, DETC 2006-99749

5.   George, P., Gea, H. C. and Jaluria, Y., 2006, Optimization of Chemical Vapor Deposition Process, ASME Design Engineering Technical Conferences, DETC 2006-99748

6.   Chang, C.-J. and Gea, H. C., 2006, An Efficient Method for Detecting Packaging Supporting Space, ASME Design Engineering Technical Conferences, DETC 2006-99747

7.   Chang, C.-J. and Gea, H. C., 2006, Automated Design of Thin-walled Packaging Structures, The 7th World Congress on Computational Mechanics

8.   Zheng, B. and Gea, H. C., 2006, Topology Optimization with Design Dependent Body Forces, The 7th World Congress on Computational Mechanics

9.   Gea, H. C. and Kwon, J., 2005, Topology Synthesis for Linkage Mechanism Design Using the Minimum Potential Energy Principle, ASME Design Engineering Technical Conferences, DETC 2005-85587

10. Zheng, B. and Gea, H. C., 2005, Structural Topology Optimization under Design Dependent Loads, ASME Design Engineering Technical Conferences, DETC 2005-85605

11.  Oza, K. and Gea, H. C., 2005, An Efficient Method for Reliability-Based Design Optimization, SAE Transactions: Journal of Materials & Manufacturing, 113, 5, pp. 493-499.

12.  Jung, D. and Gea, H. C., 2004, Compliant Mechanism Design with Non-linear Materials Using Topology Optimization, International Journal of Mechanics and Materials in Design, 1: pp. 157-171.

13.   Jung, D. and Gea, H. C., 2004, Topology Optimization Based Design on Negative Poisson's Ratio Materials, The Third International Conference on Advances in Structural Engineering and Mechanics.

14.   Gea, H. C., and Wang, B. P., 2004, A Quasi-Second Order Method for Reliability Based Design Optimization Using Complex Method for Sensitivity Analysis, The sixth World Congress on Computational Mechanics, (WCCM VI)

15.     Oza, K, and Gea, H. C., 2004, Two-Level Approximation Method For Reliability Based Design Optimization, ASME Design Engineering Technical Conference, DETC 2004-57463

16.    Oza, K. and Gea, H. C., 2004, An Efficient Method for Reliability Based Design Optimization, The 2004 SAE World Congress, Reliability and Robust Design in Automotive Engineering, 2004-01-1125, pp. 227- 234.

17.   Jung, D., Gea, H. C. and Yang, R.J., 2004, Design of Negative Poisson’s Ratio Materials Using Topology Optimization, The 45^th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference, AIAA-2004-1969.

18.     Chen, W., Liu, H., Gea, H. C., and Oza K., 2004, Reliability Assessments Using Two-Level Approximation with Higher Order Derivatives, 2004 NSF Design and Manufacturing Grantees & Research Conference.

19.      Jung, D. and Gea, H. C., 2003, Design of Energy Absorbing Structure Using Topology Optimization with a Multi-Material Model, ASME Design Engineering Technical Conference, DETC 2003, DAC-48774.

20.      Gea, H. C., Abramson, S., Knight, D., Kohn, J. and Zhang, D., 2003, Design and Modeling of Effective Material Properties of Bimodal Porous Scaffolds, Society for Biomaterials, 29^th Annual Meeting.

21.      Liu, H, Chen, W., Sheng, J. and Gea, H. C., 2003, Application of The Sequential Optimization and Reliability Assessment Method to Structural Design Problems, ASME Design Engineering Technical Conference, DETC 2003, DAC-48710.

22.  Chen, W. and Gea, H. C., 2003, Exploitation of FEM in Robustness and Reliability Assessments, 2003 NSF Design and Manufacturing Grantees & Research Conference.

23.  Jung, D. and Gea, H. C., 2002, Compliant Mechanism with Non-linear Materials Using Topology Optimization, ASME Design Engineering Technical Conference, DETC 2002, DAC-34097.

24.  Yim, Soonkyu and Gea, H. C., 2002, Local Polygon Reduction for Voxel-Based Modeling, ASME Design Engineering Technical Conference, DETC 2002, CIE-34480.

25.  Gea, H. C., 2002, Application of Regional Strain Energy in Compliant Structure Design, 2002 NSF Design, Service and Manufacturing Grantees & Research Conference.

26.  Luo, J. and Gea, H. C., 2001, On Stress Based and Strain Based Methods for Prediction of Optimal Orientation of Orthotropic Materials, The Sixth U.S. National Congress on Computational Mechanics.

27.  Yim, Soonkyu and Gea, H. C., 2001, Shape Representation Using Voxel-based Modeling with Wavelet Transform, World Multiconference on Systemics, Cybernetics and Informatics, Vol. VII, Computer Science and Engineering: Part I, pp. 275-279.

29.  Gea, H. C. and Luo, J., 2001, Design for Energy Absorption: A Topology Optimization Approach, ASME Design Engineering Technical Conference, DETC2001 / DAC21060.

30.  Yim, Soonkyu and Gea, H. C., 2001, Voxel-Based Modeling with Multi-Resolution Wavelet Transform for Layered Manufacturing, The 12th Annual Solid Freeform Fabrication (SFF) Symposium, August 6-8, 2001

31.  Gea, H. C., 2001, Topology Optimization with Geometrical Nonlinearities, 2001 NSF Design, Service and Manufacturing Grantees & Research Conference.

32.  Gea, H. C. and Yim, Soonkyu, 2000, Development of an Image-based CAD using wavelet transform, ASME Design Engineering Technical Conference, DETC2000 / DAC-14262.

33.  Gea, H. C. and Luo, J., 2000, Topology Optimization of Structures with Geometrical Nonlinarities, ASME Design Engineering Technical Conference, DETC2000 / DAC-14266.

34.  Luo, J., Gea, H. C. and Yang, R.J., 2000, Topology Optimization for Crush Design, the 8^th AIAA/NASA/USAF/ISSMO Symposium on Multidisciplinary Analysis and Optimization, 2000-4770

35.  Gea, H. C., 2000, Compliant Mechanism Design Using Topology Optimization, 2000 NSF Design and Manufacturing Research Conference.

36.  Gea, H. C and Kong, Q., 1999, Non-linear Structural Sensitivity Analysis of Total Strain Energy, The Fourth Asia-Pacific Conference on Computational Mechanics, Vol. 1, pp. 405-510.

37.  Kong, Q. and Gea, H. C., 1999, Sensitivity Analysis for Non-linear Structures, ASME Design Engineering Technical Conference, DETC99 / DAC-8616.

38.  Kong, Q. and Gea H. C., 1999, Sensitivity Analysis of Strain Energy for Non-linear Structures, The 3^rd ISSMO / AIAA World Congress of Structural and Multidisciplinary Optimization, 29-TOM2-4.

39.  Gea, H. C., 1999, A Systematic Topology Optimization Approach for Optimal Stiffener Design, 1999 NSF Design and Manufacturing Grantees Conference.

40.  Gea, H. C., 1999, Topology Optimization Based Compliant Mechanism Design, OptiCON ’99

41.  Luo, J. and Gea, H. C., 1998, Optimal Stiffener Design of 3D Shell/Plate Structures, 1998 ASME Design Engineering Technical Conference, DETC98 / DAC-5611.

42.  Gea, H. C. and Luo, J., 1998, Automated Optimal Stiffener Pattern Design, 7th AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, AIAA-98-4815, Part 2, pp. 861-869.

43.  Chickermane, H., Gea, H. C., Yang, R. and Chuang, C., 1997, Optimal Fastener Pattern Design Considering Bearing Loads, 1997 ASME Design Technical Conferences, DETC97 / DAC3770[1].

44.  Luo, J. and Gea, H. C., 1997, Optimal Orientation of Orthotropic Materials Using an Energy Based Method, 1997 ASME Design Technical Conferences, DETC97 / DAC3976.

45.  Gea, H. C., 1997, Optimal Bead Orientation in Topology Optimization,  ASME Summer Meeting, McNU ’97, AMD-Vol. 227, Design Optimization with Applications in Industry, pp. 13-22.

46.  Luo, J. and Gea, H. C., 1997, Optimal Stiffener Design for Interior Sound Reduction, The X International Conference on Vehicle Structural Mechanics and CAE, SAE-P-308, pp. 265 – 270.

47.  Gea, H. C., 1997, Structural Design Using a Topology Optimization Based Approach, Optimization in Industry, Engineering Foundation.

48.  Gea, H. C., 1997, Optimal Bead Orientation of Shells, 1997 NSF Design and Manufacturing Grantees Conference.

49.  Luo, J. and Gea, H. C., 1996, Modal Sensitivity Analysis of Coupled Acoustic-Structural Systems, ASME 1996 Design Engineering Technical Conferences, 96-DETC / CIE-1629.

50.  Jain, S. and Gea, H. C., 1996, Two-Dimensional Packing Problems Using Genetic Algorithms, ASME 1996 Design Engineering Technical Conferences, 96-DETC / DAC-1466.

51.  Chickermane, H. and Gea, H. C., 1996, Design of Multi-Component Structural Systems for Optimal Layout Topology and Joint Locations, ASME 1996 Design Engineering Technical Conferences, 96-DETC / DAC-1467.

52.  Chickermane, H. and Gea, H. C., 1996, Rivet Bearing Load Considerations in the Design of Mechanical Repairs for Aging Aircraft, Proceedings of the FAA-NASA Symposium on the Continued Airworthiness of Aircraft Structures, Vol. II, pp. 577 – 584.

53.  Gea, H. C. and Ramamurthy, R., 1996, An Optimization Study on Deep Drawing of Square Shells, The Fourth International Conference on Automation Technology, Vol. 1, pp. 465 – 471.

54.  Gea, H. C., 1996, Topology Optimization of Shell Stiffeners Using a Multi-Material Design Domain Method, 1996 NSF Design and Manufacturing Grantees Conference.

55.  Jain, S. and Gea, H. C., 1995, PCB Layout Design Using a Genetic Algorithm, ASME Advances in Design Automation, Vol. 1, pp. 529 – 536.

56.  Fu, Y. and Gea, H. C., 1995, Optimal Layout of Shell Stiffeners with Frequency Design Considerations, ASME Advances in Design Automation, Vol. 1, pp. 241 – 248.

57.  Chickermane, H. and Gea, H. C., 1995, Topology Optimization of Mechanical Repairs for Aging Aircraft, Computational Mechanics '95, Vol. 1, pp. 223 – 228.

58.  Nagai, K., Igarashi, M., Gea, H. C. and Kikuchi, N., 1995, Automotive Applications of Integrated Structural Optimization, Computational Mechanics '95, Vol. 2, pp. 2171 – 2176.

59.  Gea, H. C. and Fu, Y., 1995, 3-D Shell Topology Optimization Using a Design Domain Method, The IX International Conference on Vehicle Structural Mechanics and CAE, SAE-P-290, pp. 245 – 252.

60.  Gea, H. C., 1994, Topology Optimization: A New Micro-Structure Based Design Domain Method, ASME Advances in Design Automation, Vol. 2, pp. 283 – 290. 

61.  Chickermane, H. and Gea, H. C., 1994, Structural Optimization Using A Generalized Convex Approximation, ASME Advances in Design Automation, Vol. 2, pp. 253 – 260.

62.  Chickermane, H. and Gea, H. C., 1994, An Efficient Algorithm for Structural Optimization Problems, The 15^th International Symposium on Mathematical Programming.

63.  Chirehdast, M., Gea, H. C., Kikuchi, N. and Papalambros, P., 1994, Structural Configuration Examples of an Integrated Optimal Design Process, ASME Advances in Design Automation, Vol. 2, pp. 283 – 290[2].

64.  Chirehdast, M., Gea, H. C., Kikuchi, N. and Papalambros, P., 1992, Further Advances in the Integrated Structural Optimization, Fourth Symposium on Multidisciplinary Analysis and Optimization.

[1] This paper won the best technical paper at the 1997 ASME Design Engineering Technical Conferences, Design Automation Conference.

[2] This paper won the best technical paper at the 1994 ASME Design Engineering Technical Conferences, Design Automation Conference.

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