CEIT

Computational Optimization Laboratory

Research

The focus of the Computational Optimization Laboratory, led by Dr. Xuchun Ren, is to develop rational design methodologies based on novel simulation methods and statistical methods for use in complex engineering problems. Our mission is to study, discover, and demonstrate new ways in which engineers can explore new design concept for complex engineering systems. The complexity considered stems from many aspects, such as the large-scale and computationally expensive simulations, the various sources of uncertainties, and the multidisciplinary requirement with conflicting goals. Current research in our group involves topics such as robust or reliability-based topology optimization, advanced methods for uncertainty quantification, robust or reliability-based shape optimization, deterministic design optimization, and advanced modeling/simulation techniques for complex engineering system.

Please use the expandable menus below for more information on the various research areas of interest in the Computational Optimization Laboratory:

Reliability-Based Shape Optimization of a Jet Engine Bracket

A reliability-based shape optimization of a jet engine bracket with 79 design variables resulted in a 87 percent reduction in the mass of the bracket.

Reliability Based Shape Optimization of a Leverarm

A reliability-based shape optimization of a leverarm with 22 design variables resulted in a 79 percent reduction in the mass of the leverarm.

Facilities

 

Publications

Journal Publications

  1. X.C. Ren, V. Yadav and S. Rahman, 2015, “Reliability-Based Design Optimization by Adaptive-Sparse Polynomial Dimensional Decomposition,” Structural and Multidisciplinary Optimization, 53(3), pp. 425-452.
  2. S. Rahman and X.C. Ren, 2014, “Novel Computational Methods for High-Dimensional Stochastic Sensitivity Analysis.” International Journal for Numerical Methods in Engineering, 98(12) pp. 881-916.
  3. X.C. Ren and S. Rahman, 2013, “Robust Design Optimization by Polynomial Dimensional Decomposition,” Structural and Multidisciplinary Optimization, 48(1), pp. 127-148.
  4. J. Bi, H.B. Fang, Q. Wang, and X.C. Ren, 2010, “Modeling and Optimization of Foam-Filled Thin-Walled Columns for Crashworthiness Designs,” Finite Elements in Analysis and Design, 46(4), pp. 698-709.
  5. M. Horstemeyer, X.C. Ren, et al., 2009, “A Comparative Study of Design Optimization Methodologies for Side-Impact Crashworthiness Using Injury-Based Versus Energy-Based Criterion.” International Journal of Crashworthiness, 14(2), pp. 125-138.

Conference Publications

  1. X.C. Ren and S. Rahman, 2016, “Reliability-Based Design Optimization by Adaptive-Sparse Polynomial Dimensional Decomposition,” ASME International Design Engineering Technical Conferences (IDETC) & Computers & Information in Engineering (CIE) Conference, Charlotte, NC.
  2. X.C. Ren, Vaibhav Yadav, and S. Rahman, 2014, “Reliability-Based Design Optimization by Adaptive-Sparse Polynomial Dimensional Decomposition,” Engineering Mechanics Institute Conference, Hamilton, Ontario, Canada.
  3. X.C. Ren and S. Rahman, 2013, “Stochastic Design Sensitivity Analysis and Optimization of Complex Systems,” 11th International Conference on Structural Safety & Reliability, New York, NY.
  4. S. Rahman and X.C. Ren, 2013, “Stochastic Design Optimization of Complex Systems,” 4th International Symposium on Inverse Problems, Design And Optimization, Albi, France.
  5. C. Ren and S. Rahman, 2012, “Robust Design Optimization by Polynomial Dimensional Decomposition,” Proceedings of 14th AIAA/ISSMO Multidisciplinary Analysis Optimization Conference, Indianapolis, IN.
  6. X.C. Ren and S. Rahman, 2012, “Reliability-Based Design Optimization by Polynomial Dimensional Decomposition,” Proceedings of 11th ASCE Joint Specialty Conference on Probabilistic Mechanics and Structural Reliability, South Bend, IN.
  7. X.C. Ren, X.W. Tangpong, et al., 2009, “Numerical Investigations of Mechanical Responses, Friction and the Formation of Debris of UHMWPE in Total Joint Replacement,” Proceedings of the ASME  International Design Engineering Technical Conferences (IDETC) & Computers and Information in Engineering (CIE) Conference , San Diego, CA.
  8. J. Bi, H. Fang, Q. Wang, and X. Ren, 2009, “Crashworthiness Optimization of Foam-Filled Thin-Walled Structures.” 10th US National Congress of Computational Mechanics, Columbus, OH.
  9. X.C. Ren, Z.Y. Hong, and G.Z. Wu, 2004, “Finite Element Analysis and the Screening of Young’s Module of Radial Truck Tire.” International Rubber Conference, Beijing, China.
  10. X.C. Ren, P. Li, 2004, “Measure Constitutive Parameters of Carbon-filled Rubber using Digital Speckle Correlation Method.” International Rubber Conference, Beijing, China.
Awards

External Funding

Ren, X. (PI), 2017 – 2019,  “Novel Decomposition Methods for Reliability-Based Topology Optimization,” National Science Foundation (NSF), Civil, Mechanical and Manufacturing Innovation (CMMI) Program, $261,067

Members

Faculty

Dr. Xuchun Ren

Assistant Professor
Department of Mechanical Engineering
E-mail: xren@georgiasouthern.edu

Graduate Students (Current)

Graduate Students (Prior)

Contact

Computational Optimization Laboratory
Engineering Building, Room 1102
Department of Mechanical Engineering
Georgia Southern University
Statesboro, GA 30460

Dr. Xuchun Ren
Assistant Professor
Department of Mechanical Engineering
Georgia Southern University
P.O. Box 8046
Statesboro, GA 30458
E-mail: xren@georgiasouthern.edu
Contact: (912) 478-7063 (Office) | (912) 478-1455 (Fax)

Last updated: 3/7/2017

Department of Mechanical Engineering • P.O. Box 8046 • Statesboro, Georgia 30460 • (912) 478-5761