Past Academic Research

Reliability of Marine Structures

Stanford University (10/95-03/99)

• • Carried out research in the area of probabilistic seismic-demand analysis (PSDA) of nonlinear structures under the guidance of Prof. Allin Cornell. A number of  research reports and  my PhD thesis are published based on the research.

  • Developed methodology for an efficient and accurate seismic risk assessment of structures from the results of structure-specific nonlinear analysis for a relatively small set of records and from probabilistic seismic hazard results. The procedure has been used in the SAC research project and in a number of FEMA guidelines (e.g., FEMA-351). The research paper on the methodology of seismic risk-assessment procedure is published in Earthquake Spectra and has been awarded as an Outstanding Research Paper by EERI.

  • In addition the results on ground-motion scaling are published in 7USNCEE, results of building collapse probabilities in 8ASCE Specialty Conference and results on vector-based seismic demand analysis in 2006 USNCEE.

Dept. of Civil Engineering and Engineering Mechanics

University of Arizona, Tucson (08/94-09/95)

• • Carried out research under the guidance of Prof. Achintya Haldar in the area of reliability analysis of nonlinear steel-frame structures with partially restrained connections by stochastic finite element method (SFEM). The methodology considered material and geometric nonlinearity, and also the nonlinearity of partially restrained (PR) connections to estimate the structural reliability. The reliability index of structures was estimated for the strength and serviceability performance functions.The research results are published in IUTAM-95.

Dept. of Civil and Environmental Engineering

Jadavpur University, Kolkata, India (08/88-07/90)

• • Master’s Project: Finite Element in Nonlinear Transient Analysis: Implementation and Numerical Examples.

  • Developed 2-D nonlinear finite elements for transient response analysis of nonlinear structures for plane-stress, plane-strain, and axi-symmetric problems.