Activities

• Earthquake engineering simulations of large scale structures using High Performance Computing Facilities
• Development of structural analysis platform on grid garuda and HPC systems
• Development of HPC facility for researchers, academicians and students for their computations, earthquake engineering and geotechnical simulations.
• Core areas of work are mainly Earthquake Engineering, Composite Materials and Smart Materials.

Computing Tools

OpenSees

The Open System for Earthquake Engineering Simulation (OpenSees) is a software framework for simulating the seismic response of structural and geotechnical systems. It is open source and has been developed as the computational platform for research in performance-based earthquake engineering at the Pacific Earthquake Engineering Research Center. OpenSees has advanced capabilities for modeling and analyzing the nonlinear response of systems using a wide range of material models, elements, and solution algorithms. The software is designed for parallel computing to allow scalable simulations on high-end computers or for parameter studies.

Partial List of completed projects

Optimum Design of FRP Composite Laminates Using Parallel Genetic Algorithms
(In Collaboration with Indian Institute of Technology (IIT) Guwahati)

• To carrying out a transient dynamic finite element analysis for studying the responses and predicting impact damage of structural composites and effect of various important parameters on the impact.
• Genetic algorithm was used to optimize the stacking sequence of the laminated component based on the appropriate failure criteria for delamination and matrix cracking .Since the staking sequence optimization problem of laminated composites are ideally discrete in nature, GA was advantageously used for design optimization

Schematic Island Model Parallel GA (IMPGA)

Optimum Design and Active Vibration Control of Smart FRP Structures on Parallel Platform
(In Collaboration with Indian Institute of Technology (IIT) Guwahati)

• FE Code development for analysis of Smart FRP structures
• Development of different control strategies for active vibration control
• Development of GA based optimal control strategies for active vibration control and comparative performance analysis
• Development of GA based optimization methodologies for optimal locations of sensors and actuator patches.
• Development of parallel GA based optimization methodologies for optimal locations of sensors and actuator patches.
• Comparative study of different control methodologies and optimization methodologies
  

Ongoing Projects

Objectives:

Large scale simulations using OpenSees

• Seismic Response of Reinforced Concrete Karad Bridge in OpenSees using High Performance Computing: A two-dimensional nonlinear model of the Karad Bridge, including the superstructure, piers, and supporting piles was developed using Gid. Tcl model script has been generated and given as input to OpenSees.
• This bridge is situated on Guhagar-Karad-Jat-Vijapur, S.H. 78 at 141/200 across Krishna River near Karad and prepared as high level bridge by keeping pier positions in line with the piers of existing bridge. Hence, proposed span arrangement is 39.5m, 38.0m, 40.0m, 40.0m, 40.0m, 40.0m, 39.0 and 39.0m. The total length of the bridge is 315.50m.
• The bridge is having two lanes with 7.5 m clear road width between the kerbs and footpath 1.5m width on D/S. 8-span composite structures with pre-stressed concrete box and RCC piers to provide continuity. Piers are supported on pile groups, each of which is RCC piles. The foundation data is composed of mainly medium to dense clayey sand. In addition, fractured amagdoidal basalt layers are present. The hard rock is located at 23 to 25 meter depth

2D Modeling using Gid of existing Karad Bridge

Deformations for the spans

• Seismic Response of RC Building in OpenSees using High Performance Computing :
  A three dimensional model of three bay 6 storied rectangular structure has been created in GID and analysis is in progress for earthquake engineering simulations.

In Collaboration with ILTP Russia

• Nonlinear Earthquake Risk Analysis of Structures
• Seismic Behavior of Reinforced Concrete Shell and Roof Structures

Products

INTCOMP
This is Finite Element Based Application for stress analysis of fibre reinforced Composites and sandwich panels, for 2- dimensional plates/shells structures

Applications of INTCOM Marine Transportation Civil Construction Aerospace Failure Mechanisms Highly Localized - Delamination

Partnerships and Collaborations

• SGSITS Indore
• ICAD Moscow
• Indian Institute of Technology Mumbai
• Indian Institute of Technology -Guwahati
• College of Engineering, Pune (COEP)

Research Publications and Conference Presentations

• M.S.Shah and K.S.Ramesh, "Fracture Analysis on Parallel Supercomputers", Proc. of Indian Transputer Users' Group Conference, Pune, India, Dec 1993.
• V.L.Yakushev (ICAD, Moscow), K.S. Ramesh and M.S.Shah, "Use of Transputer Systems to Solve Nonlinear Problems of Shell Stability", Proc. of Indian Transputer Users' Group Conference, Pune, India, Dec 1993.
• K.S.ramesh and M.S.Shah, "Impelmentation of Parallel Preconditioned Conjugate Gradient Solver for FEA on PARAM", Proc. of IMACS Conference, Bangalore, India, 1993.
• M.S. Shah, "Finite Element Analysis on PARAM", Proc. of one day seminar on, "Parallel Processing Techniques and Software for Finite Element Analysis", IISc-Bangalore, India, February 1993.
• Tarun Kant (IIT, Bombay), M.S.Shah and K.S.Ramesh, "Composite Materials Analysis on Parallel Supercomputer", Proc. of Indian Transputer Users' Group Conf., Hyderabad, India, Dec 1994.
• V.C.V.Rao and M.S.Shah, "An Adaptive Finite Element Method Applied to Plate Problems, Proc. of Int. Conf. on Mechanics of Solids and Materials Engineering (MSME-95), Singapore, 5-7 June 1995.
• Tarun Kant and M.S. Shah, "Finite Element Analysis of Structures of Composite Materials on Parallel Supercomputer", Proc. of Int. Conf. on High Performance Computing held (HiPC), New Delhi, India, Dec 27 - Dec 30, 1995.
• M.S. Shah, 'Information Technology Trends and Software Export Scenario' , J. of The Institution of Engineers (India), Pune, India, p3-11,1998.
• M.S. Shah and T. Kant, "Finite Element Analysis of Fibre-Reinforced Polymer Shells Using Higher-Order Shear Deformation Theories on Parallel Distributed Memory Machines", Int. J. of Comp. Applications in Technology. Vol 12, Nos. 5, 1999, p206.
• M.S. Shah and T. Kant, 'Higher-Order Shear Deformation Theories for the Stress Analysis of Composite Shell Structures on Parallel Machines', Proc. of Second Structural Engineering Convention (SEC-2000) - 'Advances in Structural Engineering', IIT-Bombay, Mumbai, 5-8 January 2000, p159.
• Yakushev V.L., Shah M.S. and Sathe S.P., 'Non_linear Stability Analysis in Thin-Walled Structures on Parallel Computer', Proc. of HPC Asia 2002, Bangalore, India, 16-19 Dec 2002.
• T.Kant, M.S.Shah and B.B.Mahanta. 'Thermomechanical Analysis of Fibre Reinforced Composite Plates and Shells on Supercomputers', Proc. of Structural Engineering Convention (SEC 2003), IIT-Kharagpur, Dec 12-14, 2003, pp501-510
• A.P.Kumbhar, M.S.Shah and B.Dattaguru, 'Fracture Parameters Calculation in Bonded Joints Using Iterative Solver on Parallel Computer', Proc. of 12th Int. Conf. On Advanced Computing and Communication (ADCOM 2003), Coimbatore, Dec 17-20, 2003.
• A.P.Kumbhar, M.S.Shah and B.Dattaguru, 'Fracture Analysi Using Parallel Algorithm ', Proc of Int. Conf. On Advances in Structural Integrity (ICASI 2004), Bangalore, July 17-20, 2004.
• Yogesh Agarwal, Yogindra Abhyankar, Shailesh Ghotgoalkar, Mahesh Shah, A.P. Kumbhar and B. Dattaguru, 'Solving Fracture Mechanics Problems Using Reconfigurable Computing', Proc. of Int. Conf. On Reconfigurable Computing and FPGA (ReconFig04), Colima, Mexico, September 20-24, 2004.
• M.S. Shah, S.Chakraborty and R. Rastogi, 'Earthquake Engineering Grid in India - A Concept', Proc. of 41st Annual Convention and Meeting on 'Inter and Intraplate Seismicity in India - Present Knowledge and Future Strategy' , NGRI - Hyderabad, Dec 29-31 2004.
• B.B.Mahanta, M.S.Shah, T. Kant, 'Stress Analysis of FRP Composites Using Multigrid and Domain Decomposition Techniques', Proc. of Int. Conf. on Theoretical, Applied, Computational and Experimental Mechanics (ICTACEM), IIT-Kharagpur, Dec 28-30, 2004.
• M.S. Shah, A.P. Kumbhar and B.B. Mahanta. 'Parallel Finite Element Stress Analysis of FRP Composites under Low Velocity Impact using Higher-Order Flat Facet Elements'. Proc. of 3rd Specialty Conference on 'Conceptual Approach To Structural Design', Singapore, August 24-26, 2005, pp175-181
• Yakushev, V.L. and Shah, M.S.. 'Simulation of Non-linear Stability Analysis in Thin Walled Structures on Parallel Computers', Int. J. of Computer Applications in Technology, Vol. 24, No.4, 2005, pp218-225.
• A.P. Kumbhar, M.S. Shah, Y. Abhyankar, Y. Agarwal, C. Sajish, S. Ghotgalker, V. Bhardwaj and B. Dattaguru, 'Fracture Analysis Using Reconfigurable Computing Systems', Proc. of 8th Int. Conf. on High Performance Computing in Asia Pacific Region (HPC Asia 2005), Beijing, Nov 30 - Dec 3, 2005, pp98-104.
• Ghosh, M. S. Shah and A. P. Kumbhar, 'Interactive Mesh Generation For Finite Element Analysis', Proc. of Int. Conf. on Computational and Experimental Engineering and Sciences (ICCES05)', IIT-Chennai, Dec 1-6, 2005, pp1554-1559.
• P. Kumbhar and M. S. Shah, 'Finite Element Analysis of Smart Structures Using Parallel Algorithms', Proc. of Int. Conf. on Computational and Experimental Engineering and Sciences (ICCES05)', IIT-Chennai, Dec 1-6, 2005, pp2088-2093.
• Sharad C. Purohit and Mahesh S. Shah, 'Structural Mechanics and High Performance Computing - C-DAC's Perspective', Proc. of Indo-Australian Conf. On 'Information Technology in Civil Engineering (IAC-ITCE)', IIT-Roorkee, Feb 20-21, 2006
• M.S. Shah and V.L. Yakushev, 'Parallel Non-linear Stability Analysis in Thin-Walled Structures'. Invited paper presented and published in Proc. of Indo-Russian Workshop on 'Problems in Nonlinear Mechanics of Solids with Large Deformations', IIT-Delhi, Nov 22-24, 2006, pp175-181.
• M.S. Shah and R.D. Chaudhari, 'High Performance Computing and Structural Mechanics Activities at C-DAC', Proc. of Int. Conf. On Trends in Product Life cycle, Modelling, Simulation and Synthesis (PLMSS06), IISc-Bangalore, December 18-20, 2006, pp203-212.
• M.S. Shah and R.D. Chaudhari, 'Impact Analysis of FRP Composites Using Parallel Computing', published as chapter 'FINITE ELEMENTS', WSEAS Press, June 2007, pp78-85.
• M.S. Shah and P.G.Gawali, 'PERFORMANCE EVALUATION OF STRUCTURAL ENGINEERING OPENSEES SOFTWARE ON HPC AND GRID-COMPUTING SYSTEMS', Proc. of International Workshop on Earthquake Hazards and Mitigations (RJAM07), December 7-8, 2007, IIT Guwahati
• Pallavi Gavali, Mahesh Shah, Rakesh Khare, 'Computer aided design and checking of RC structures with Indian seismic standards', J. of Bridge and Srructural Engineering, Vol. 38, No. 3, September 2008, pp75-85
• M. Shah, R. Khare and T. Kant, 'Transient Analysis of FRP Composite Structures Using Higher-Order Flat Facet Elements on Parallel Computers', Proc. of Indo-Russian Workshop on Topical Problems in Solid Mechanics, BITS-Pilani Goa Campus, November 11-14, 2008.
• Mahesh Shah, Pallavi Gavali & Gouri Kadam, 'Earthquake simulations of large-scale structures using OpenSees on grid and High performance computing in India', paper presented in the Indo-Russian workshop on Scientific and Engineering Applications on high performance computing systems, 24-26 November 2009., Moscow, Russia
• D. Chakraborty, A. Dutta, M. S. Shah and V. Sundararajan, 'Parallel GA for Optimum Design of Laminated FRP Composites', Proc. of 3rd International Congress on Computational Mechanics and Simulation (ICCMS09), 1-3 December 2009. IIT-Bombay, Mumbai
• Gouri Kadam, Pallavi Gavali and Mahesh Shah, 'Earthquake Engineering Activities on High Performance Computing in CDAC', paper presented in 'High Performance Computing in Science and Technology' workshop, Indo-Russian Collaboration Workshop, 17-19 November 2010, Pune, India.
• M Shah, D. Chakraborty, V. Sundararajan, K. Mehar. Optimum Design of FRP Composite Laminates Using Parallel Genetic Algorithms. In Proc of the "National Conference on Emerging Trends in Soft Computing", Pune, 2nd -3rd Feb, 2011, pp120-125.

Contact

CSM
Computational Aided Engineering Group
Centre for Development of Advanced Computing (C-DAC)
Pune University Campus, Ganeshkhind
Pune-411007
Phone:+91-20-25704249/236
Fax:+91-20-25694004

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