Ahsan Kareem

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Ahsan Kareem
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Website engineering.nd.edu/faculty/ahsan-kareem/

Ahsan Kareem is the Robert M. Moran Professor of Engineering in the Department of Civil & Environmental Engineering and Earth Sciences (CEEES) at the University of Notre Dame. He is Director of the Nathaz Modeling Laboratory and served as the past Chair at the Department of CEEES at the University of Notre Dame. [1] [2]

Contents

The focus of his work is on quantifying load effects caused by various natural hazards on structures and to develop innovative strategies to manage and mitigate their effects. The characterization and formulation of dynamic load effects due to wind, waves and earthquakes on tall buildings, long-span bridges, offshore structures and other structures is carried out via fundamental analytical computational methods, and experiments at  laboratory, and full-scale. He directs NatHaz Group (NatHaz Modeling Laboratory) which focuses on developments in cyberspace virtual collaborative research platforms, e.g.,  virtual organizations, crowdsourcing, computational intelligence, living laboratories, sensing and actuation, citizen sensing, web-enabled analysis and design, scientific machine learning (SciML) and cloud-based computing.

His fundamental contributions to aerodynamics and aeroelasticity has led to advances in the analysis, design and performance assessment of tall buildings and long span bridges, [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] high speed train aerodynamics, [13] [14] and land based and floating wind turbines. [15] [16] He has conducted from wind tunnel modeling [17] to stochastic and CFD (Computational Fluid Dynamics) [18] [19] based simulations and finally to the full-scale monitoring of some of the signature buildings [20] [21] around the world including more recently Burj Khalifa. [22] It utilizes a novel “SmartSync” system featuring “Internet-of-Things” (IoT) concept with built in layers of intelligence for data management and analysis. [23] [24] [25] He has advanced models for damping in tall buildings and motion mitigation devices like tuned liquid dampers from design, prototype testing to post installation monitoring in buildings in the US and in the Pacific-rim. [26] [27] [28] [29] [30] His contributions towards database assisted design through a web-portal recommended in ASCE 7 is used worldwide for designing tall buildings. [31] More recently, his group has embarked on shape optimization [32] [33] of tall buildings based on CFD with embedded topology optimization [34] [35] to configure efficient and optimal structural systems, super tall buildings and long span bridges. [36] He has developed prediction methods for quantifying hydrodynamic load effects and the attendant response of offshore structures under extreme environments and service loads. He has also contributed to a wide range of topics in the areas of offshore dynamics. [37]

He introduced the use of the Wavelet [38] [39] [40] and Shapelet [41] transforms to signal processing and feature extractions and advanced the use of Volterra systems, POD, ICA, PCA and DMD [42] [43] for data analysis and modeling.  He developed efficient simulation schemes for random vector processes: stationary/non-stationary; Gaussian/Non-Gaussian; Conditional/Un-Conditional utilizing spectral and time-series methods in conjunction with a novel scheme named “Stochastic Decomposition. [44] [45] He developed wind load models for non-synoptic winds like thunderstorms and downbursts and introduced the concept of Gust Front Factor [46] [47] and also developed models for hurricane wind field kinematics and dynamics. [48] [49] He developed safety and risk assessment schemes, [50] performance-based design approach for wind effects and impact of climate change. [51] In the area of Data Analytics and Machine Learning, he has contributed to data analytics, supervised, unsupervised and reinforcement learning; Bayesian Deep Convolution Neural Networks for random fields; Bayesian Deep learning; Dynamic Mode Decomposition; Surrogate Modeling with applications to structural engineering and dynamic loading; Digital Virtual Twins;  Fusion of CFD, Stochastics, Machine Learning and beyond; Autonomous morphing of structures through sensing, computations and actuation. [52] [53] [54] [55] [56] [57] [58]

In 2009, Kareem was elected a member of the National Academy of Engineering for contributions to analyses and designs to account for wind effects on tall buildings, long-span bridges, and other structures. He currently serves as the President of the International Association for Wind Engineering. He was also the former President of the American Association for Wind Engineering. [59] [60]

Awards and honors

Membership to Academies of Engineering

Medals

Other prizes, awards and honors

Honorary and guest professorships

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References

  1. ↑ "Ahsan Kareem – College of Engineering". engineering.nd.edu.
  2. ↑ "Ahsan Kareem". University of Notre Dame.
  3. ↑ Kareem, Ahsan (May 1983). "Mitigation of wind induced motion of tall buildings". Journal of Wind Engineering and Industrial Aerodynamics. 11 (1–3): 273–284. doi:10.1016/0167-6105(83)90106-x. ISSN   0167-6105.
  4. ↑ Kareem, Ahsan (November 1985). "Lateral‐Torsional Motion of Tall Buildings to Wind Loads". Journal of Structural Engineering. 111 (11): 2479–2496. doi:10.1061/(asce)0733-9445(1985)111:11(2479). ISSN   0733-9445.
  5. ↑ Kareem, Ahsan (October 1992). "Dynamic response of high-rise buildings to stochastic wind loads". Journal of Wind Engineering and Industrial Aerodynamics. 42 (1–3): 1101–1112. doi:10.1016/0167-6105(92)90117-s. ISSN   0167-6105. S2CID   10842866.
  6. ↑ Kareem, Ahsan; Kijewski, Tracy; Tamura, Yukio (1999-09-25). "Mitigation of motions of tall buildings with specific examples of recent applications". Wind and Structures. 2 (3): 201–251. doi:10.12989/was.1999.2.3.201. ISSN   1226-6116. S2CID   17107302.
  7. ↑ Chen, Xinzhong; Kareem, Ahsan (December 2001). "Nonlinear response analysis of long-span bridges under turbulent winds". Journal of Wind Engineering and Industrial Aerodynamics. 89 (14–15): 1335–1350. doi:10.1016/s0167-6105(01)00147-7. ISSN   0167-6105.
  8. ↑ Chen, Xinzhong; Kareem, Ahsan; Matsumoto, Masaru (June 2001). "Multimode coupled flutter and buffeting analysis of long span bridges". Journal of Wind Engineering and Industrial Aerodynamics. 89 (7–8): 649–664. doi:10.1016/s0167-6105(01)00064-2. ISSN   0167-6105.
  9. ↑ Chen, Xinzhong; Kareem, Ahsan (December 2003). "New frontiers in aerodynamic tailoring of long span bridges: an advanced analysis framework". Journal of Wind Engineering and Industrial Aerodynamics. 91 (12–15): 1511–1528. doi:10.1016/j.jweia.2003.09.005. ISSN   0167-6105.
  10. ↑ Xu, You-Lin; Hu, Liang; Kareem, Ahsan (January 2014). "Conditional Simulation of Nonstationary Fluctuating Wind Speeds for Long-Span Bridges". Journal of Engineering Mechanics. 140 (1): 61–73. doi:10.1061/(asce)em.1943-7889.0000589. ISSN   0733-9399.
  11. ↑ Cid Montoya, M.; Nieto, F.; Hernández, S.; Fontán, A.; Jurado, J. Á.; Kareem, A. (June 2021). "Aero-structural Optimization of Streamlined Twin-Box Deck Bridges with Short Gap Considering Flutter". Journal of Bridge Engineering. 26 (6). doi:10.1061/(asce)be.1943-5592.0001705. ISSN   1084-0702. S2CID   233548613.
  12. ↑ Wu, Teng; Kareem, Ahsan (November 2015). "A low-dimensional model for nonlinear bluff-body aerodynamics: A peeling-an-onion analogy". Journal of Wind Engineering and Industrial Aerodynamics. 146: 128–138. doi:10.1016/j.jweia.2015.08.009. ISSN   0167-6105.
  13. ↑ He, Xuhui; Li, Huan; Hu, Liang; Wang, Hanfeng; Kareem, Ahsan (May 2020). "Crosswind aerodynamic characteristics of a stationary interior railway carriage through a long-span truss-girder bridge". Engineering Structures. 210: 110350. doi:10.1016/j.engstruct.2020.110350. ISSN   0141-0296. S2CID   216173435.
  14. ↑ Li, Huan; He, Xuhui; Wang, Hanfeng; Kareem, Ahsan (November 2019). "Aerodynamics of a scale model of a high-speed train on a streamlined deck in cross winds". Journal of Fluids and Structures. 91: 102717. Bibcode:2019JFS....91j2717L. doi:10.1016/j.jfluidstructs.2019.102717. ISSN   0889-9746. S2CID   203129627.
  15. ↑ Xin Chen; Ahsan Kareem; Guoji Xu; Hao Wang; Yong Sun; Liang Hu (2021-01-05). "Author response for "Optimal tuned mass dampers for wind turbines using a Sigmoid satisfaction function‐based multiobjective optimization during earthquakes"". doi: 10.1002/we.2623/v3/response1 . S2CID   241790041.{{cite journal}}: Cite journal requires |journal= (help)
  16. ↑ Rendon, Erica A.; Manuel, Lance (2012-12-13). "Long-term loads for a monopile-supported offshore wind turbine". Wind Energy. 17 (2): 209–223. doi:10.1002/we.1569. ISSN   1095-4244.
  17. ↑ Hwang, Jae-Seung; Kareem, Ahsan; Kim, Hongjin (January 2011). "Wind load identification using wind tunnel test data by inverse analysis". Journal of Wind Engineering and Industrial Aerodynamics. 99 (1): 18–26. doi:10.1016/j.jweia.2010.10.004. ISSN   0167-6105.
  18. ↑ Kareem, Ahsan (November 2020). "Emerging frontiers in wind engineering: Computing, stochastics, machine learning and beyond". Journal of Wind Engineering and Industrial Aerodynamics. 206: 104320. doi: 10.1016/j.jweia.2020.104320 . ISSN   0167-6105. S2CID   225105378.
  19. ↑ Ding, Fei; Kareem, Ahsan; Wan, Jiawei (2019-01-02). "Aerodynamic Tailoring of Structures Using Computational Fluid Dynamics". Structural Engineering International. 29 (1): 26–39. doi:10.1080/10168664.2018.1522936. ISSN   1016-8664. S2CID   116001284.
  20. ↑ Kijewski-Correa, Tracy; Kilpatrick, John; Kareem, Ahsan; Kwon, Dae-Kun; Bashor, Rachel; Kochly, Michael; Young, Bradley S.; Abdelrazaq, Ahmad; Galsworthy, Jon (October 2006). "Validating Wind-Induced Response of Tall Buildings: Synopsis of the Chicago Full-Scale Monitoring Program". Journal of Structural Engineering. 132 (10): 1509–1523. doi:10.1061/(asce)0733-9445(2006)132:10(1509). ISSN   0733-9445.
  21. ↑ Bashor, Rachel; Bobby, Sarah; Kijewski-Correa, Tracy; Kareem, Ahsan (May 2012). "Full-scale performance evaluation of tall buildings under wind". Journal of Wind Engineering and Industrial Aerodynamics. 104–106: 88–97. doi:10.1016/j.jweia.2012.04.007. ISSN   0167-6105.
  22. ↑ Kijewski-Correa Tracy; Kwon Dae Kun; Kareem Ahsan; Bentz Audrey; Guo Yanlin; Bobby Sarah; Abdelrazaq Ahmad (2013-10-01). "SmartSync: An Integrated Real-Time Structural Health Monitoring and Structural Identification System for Tall Buildings". Journal of Structural Engineering. 139 (10): 1675–1687. doi:10.1061/(ASCE)ST.1943-541X.0000560.
  23. ↑ Kijewski-Correa, Tracy; Kwon, Dae Kun; Kareem, Ahsan; Bentz, Audrey; Guo, Yanlin; Bobby, Sarah; Abdelrazaq, Ahmad (October 2013). "SmartSync: An Integrated Real-Time Structural Health Monitoring and Structural Identification System for Tall Buildings". Journal of Structural Engineering. 139 (10): 1675–1687. doi:10.1061/(asce)st.1943-541x.0000560. ISSN   0733-9445.
  24. ↑ Guo Yanlin; Kwon Dae Kun; Kareem Ahsan (2016-02-01). "Near-Real-Time Hybrid System Identification Framework for Civil Structures with Application to Burj Khalifa". Journal of Structural Engineering. 142 (2): 04015132. doi:10.1061/(ASCE)ST.1943-541X.0001402.
  25. ↑ Guo, Yanlin; Kareem, Ahsan (May 2016). "Non-stationary frequency domain system identification using time–frequency representations". Mechanical Systems and Signal Processing. 72–73: 712–726. Bibcode:2016MSSP...72..712G. doi: 10.1016/j.ymssp.2015.10.031 . ISSN   0888-3270.
  26. ↑ Kareem, Ahsan; Kline, Samuel (February 1995). "Performance of Multiple Mass Dampers under Random Loading". Journal of Structural Engineering. 121 (2): 348–361. doi:10.1061/(asce)0733-9445(1995)121:2(348). ISSN   0733-9445.
  27. ↑ Spence, Seymour M. J.; Kareem, Ahsan (May 2014). "Tall Buildings and Damping: A Concept-Based Data-Driven Model". Journal of Structural Engineering. 140 (5): 04014005. doi:10.1061/(asce)st.1943-541x.0000890. ISSN   0733-9445.
  28. ↑ "ASCE specialty conference on probabilistic mechanics and structural & geotechnical reliability". Structural Safety. 11 (1): 79. November 1991. doi:10.1016/0167-4730(91)90031-4. ISSN   0167-4730.
  29. ↑ Yalla, Swaroop K.; Kareem, Ahsan; Kantor, Jeffrey C. (November 2001). "Semi-active tuned liquid column dampers for vibration control of structures". Engineering Structures. 23 (11): 1469–1479. doi:10.1016/s0141-0296(01)00047-5. ISSN   0141-0296.
  30. ↑ Kwon, Dae Kun; Kareem, Ahsan (2020-07-14). "Hybrid simulation of a tall building with a double‐decker tuned sloshing damper system under wind loads". The Structural Design of Tall and Special Buildings. doi:10.1002/tal.1790. ISSN   1541-7794. S2CID   225642396.
  31. ↑ Kareem, Ahsan; Kwon, Dae Kun (2017-08-21). "A Cyber-Based Data-Enabled Virtual Organization for Wind Load Effects on Civil Infrastructures: VORTEX-Winds". Frontiers in Built Environment. 3. doi: 10.3389/fbuil.2017.00048 . ISSN   2297-3362.
  32. ↑ Bernardini, Enrica; Spence, Seymour M.J.; Wei, Daniel; Kareem, Ahsan (September 2015). "Aerodynamic shape optimization of civil structures: A CFD-enabled Kriging-based approach". Journal of Wind Engineering and Industrial Aerodynamics. 144: 154–164. doi: 10.1016/j.jweia.2015.03.011 . ISSN   0167-6105.
  33. ↑ Ding, Fei; Kareem, Ahsan (July 2018). "A multi-fidelity shape optimization via surrogate modeling for civil structures". Journal of Wind Engineering and Industrial Aerodynamics. 178: 49–56. doi:10.1016/j.jweia.2018.04.022. ISSN   0167-6105. S2CID   115669682.
  34. ↑ Bobby, Sarah; Spence, Seymour M.J.; Bernardini, Enrica; Kareem, Ahsan (September 2014). "Performance-based topology optimization for wind-excited tall buildings: A framework". Engineering Structures. 74: 242–255. doi:10.1016/j.engstruct.2014.05.043. ISSN   0141-0296.
  35. ↑ Bobby, Sarah; Spence, Seymour M. J.; Kareem, Ahsan (2016-05-11). "Data-driven performance-based topology optimization of uncertain wind-excited tall buildings". Structural and Multidisciplinary Optimization. 54 (6): 1379–1402. doi:10.1007/s00158-016-1474-6. ISSN   1615-147X. S2CID   124768906.
  36. ↑ Ding, Fei; Kareem, Ahsan; Wan, Jiawei (2019-01-02). "Aerodynamic Tailoring of Structures Using Computational Fluid Dynamics". Structural Engineering International. 29 (1): 26–39. doi:10.1080/10168664.2018.1522936. ISSN   1016-8664. S2CID   116001284.
  37. ↑ Kareem, Ahsan; Zhao, Jun; Tognarelli, Michael A. (January 1995). "Surge response statistics of tension leg platforms under wind and wave loads: a statistical quadratization approach". Probabilistic Engineering Mechanics. 10 (4): 225–240. doi: 10.1016/0266-8920(95)00018-6 . ISSN   0266-8920.
  38. ↑ Gurley, Kareem; Ahsan, Kurt (1999). "ns of wavelet transforms in earthquake, wind and ocean engineering". Engineering Structures. 21 (2): 149–167.
  39. ↑ Wang, Lijuan; McCullough, Megan; Kareem, Ahsan (February 2014). "Modeling and Simulation of Nonstationary Processes Utilizing Wavelet and Hilbert Transforms". Journal of Engineering Mechanics. 140 (2): 345–360. doi:10.1061/(asce)em.1943-7889.0000666. ISSN   0733-9399.
  40. ↑ Kijewski-Correa, T.; Kareem, A. (July 2007). "Performance of Wavelet Transform and Empirical Mode Decomposition in Extracting Signals Embedded in Noise". Journal of Engineering Mechanics. 133 (7): 849–852. doi:10.1061/(asce)0733-9399(2007)133:7(849). ISSN   0733-9399.
  41. ↑ Arul, Monica; Kareem, Ahsan (February 2021). "Applications of shapelet transform to time series classification of earthquake, wind and wave data". Engineering Structures. 228: 111564. arXiv: 2004.11243 . doi:10.1016/j.engstruct.2020.111564. ISSN   0141-0296. S2CID   216080731.
  42. ↑ Luo, Xihaier; Kareem, Ahsan (April 2021). "Dynamic Mode Decomposition of Random Pressure Fields over Bluff Bodies". Journal of Engineering Mechanics. 147 (4): 04021007. arXiv: 1904.02245 . doi:10.1061/(asce)em.1943-7889.0001904. ISSN   0733-9399. S2CID   233591742.
  43. ↑ Chen, Xinzhong; Kareem, Ahsan (April 2005). "Proper Orthogonal Decomposition-Based Modeling, Analysis, and Simulation of Dynamic Wind Load Effects on Structures". Journal of Engineering Mechanics. 131 (4): 325–339. doi:10.1061/(asce)0733-9399(2005)131:4(325). ISSN   0733-9399.
  44. ↑ Zhao, Ning; Huang, Guoqing; Kareem, Ahsan; Li, Yongle; Peng, Liuliu (December 2021). "Simulation of ergodic multivariate stochastic processes: An enhanced spectral representation method". Mechanical Systems and Signal Processing. 161: 107949. Bibcode:2021MSSP..16107949Z. doi:10.1016/j.ymssp.2021.107949. ISSN   0888-3270.
  45. ↑ Li, Yousun; Kareem, Ahsan (December 1997). "Simulation of Multivariate Nonstationary Random Processes: Hybrid DFT and Digital Filtering Approach". Journal of Engineering Mechanics. 123 (12): 1302–1310. doi:10.1061/(asce)0733-9399(1997)123:12(1302). ISSN   0733-9399.
  46. ↑ Hangan, Horia; Kareem, Ahsan (2021-02-10), Hangan, Horia; Kareem, Ahsan (eds.), "Introduction", The Oxford Handbook of Non-Synoptic Wind Storms, Oxford University Press, pp. 1–8, doi:10.1093/oxfordhb/9780190670252.013.18, ISBN   978-0-19-067025-2 , retrieved 2021-08-18
  47. ↑ Kareem, Ahsan; Hu, Liang; Guo, Yanlin; Kwon, Dae-Kun (October 2019). "Generalized Wind Loading Chain: Time-Frequency Modeling Framework for Nonstationary Wind Effects on Structures". Journal of Structural Engineering. 145 (10): 04019092. doi:10.1061/(asce)st.1943-541x.0002376. ISSN   0733-9445. S2CID   199085291.
  48. ↑ Li, Lixiao; Kareem, Ahsan; Hunt, Julian; Xing, Feng; Chan, Pakwai; Xiao, Yiqing; Li, Chao (July 2019). "Observed sub-hectometer-scale low level jets in surface-layer velocity profiles of landfalling typhoons". Journal of Wind Engineering and Industrial Aerodynamics. 190: 151–165. doi: 10.1016/j.jweia.2019.04.016 . ISSN   0167-6105. S2CID   164474748.
  49. ↑ Hu, Liang; Xu, You-Lin; Zhu, Qing; Guo, Anna; Kareem, Ahsan (June 2017). "Tropical Storm–Induced Buffeting Response of Long-Span Bridges: Enhanced Nonstationary Buffeting Force Model". Journal of Structural Engineering. 143 (6): 04017027. doi:10.1061/(asce)st.1943-541x.0001745. ISSN   0733-9445.
  50. ↑ Yin, Chao; Luo, Xihaier; Kareem, Ahsan (March 2021). "Probabilistic evolution of stochastic dynamical systems: A meso-scale perspective". Structural Safety. 89: 102045. arXiv: 2004.06803 . doi:10.1016/j.strusafe.2020.102045. ISSN   0167-4730. S2CID   215769030.
  51. ↑ Kareem, Ahsan (1993). "Preparing for Global Warming". Civil Engineering. 63.
  52. ↑ Arul, Monica; Kareem, Ahsan; Kwon, Dae Kun (November 2020). "Identification of Vortex-Induced Vibration of Tall Building Pinnacle Using Cluster Analysis for Fatigue Evaluation: Application to Burj Khalifa". Journal of Structural Engineering. 146 (11): 04020234. doi:10.1061/(asce)st.1943-541x.0002799. ISSN   0733-9445. S2CID   224894488.
  53. ↑ Xu, Guoji; Kareem, Ahsan; Shen, Lian (July 2020). "Surrogate Modeling with Sequential Updating: Applications to Bridge Deck–Wave and Bridge Deck–Wind Interactions". Journal of Computing in Civil Engineering. 34 (4): 04020023. doi:10.1061/(asce)cp.1943-5487.0000904. ISSN   0887-3801. S2CID   218966932.
  54. ↑ Luo, Xihaier; Kareem, Ahsan (May 2020). "Bayesian deep learning with hierarchical prior: Predictions from limited and noisy data". Structural Safety. 84: 101918. arXiv: 1907.04240 . doi:10.1016/j.strusafe.2019.101918. ISSN   0167-4730. S2CID   195848254.
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  60. ↑ "-- IAWE International Associations for Wind Engineering --". iawe.org.
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  62. ↑ "Professor Kareem Elected as Foreign Member of the Chinese Academy of Engineering". Liu Institute for Asia and Asian Studies. Retrieved 2019-01-16.
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  66. ↑ "Robert H. Scanlan Medal - ASCE - Past Award Winners". Asce.org.
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  68. ↑ "Kareem to Receive Von Karman Medal — College of Engineering". engineering.nd.edu. Retrieved 2019-01-16.
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  84. ↑ "IABSE Awards 2020 - Merit". www.iabse.org. Retrieved 2020-06-17.
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  87. ↑ "Tongi University names Kareem honorary professor". Notre Dame News. Retrieved 2019-01-16.
  88. ↑ "Kareem Appointed Honorary Professor by The Hong Kong Polytechnic University — College of Engineering". engineering.nd.edu. Retrieved 2019-01-16.
  89. ↑ "Beijing Jiaotong University". en.njtu.edu.cn. Retrieved 2019-01-16.
  90. ↑ "Kareem Named Honorary Professor by China's Central South University — College of Engineering". engineering.nd.edu. Retrieved 2019-01-16.
  91. ↑ "Professor Ahsan Kareem Appointed as a Visiting Professor of CQU-Chonqqing University". english.cqu.edu.cn. Retrieved 2019-01-16.
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