I am a 25 years of experienced Postgraduate Structural Engineer worked mainly 18 years in the area of Advanced Structural analysis. I worked in India and in many overseas locations like USA, UK, Germany, Libya etc. Currently I am working as a Domain Expert in Geometric Limited based at Bangalore, India. TECHNICAL SKILL Structural Analysis for the design of spacecraft structural subsystems based on stiffness based design and evolvement of the overall spacecraft structure 9 years at ISRO Satellite Centre Bangalore, India. Also involved in making low order spacecraft dynamic models with Craig Bamptom method for integrated analysis with launch vehicle. Worked as consultant for 5 years at Engineering Research CentreTripoli in the field of Structural Analysis, Mathematics and Computer programming Design computations to substantiate the load bearing capability and durability of aircraft structural components 9 years at Tata Consultancy Services, CADES Digitech Pvt Ltd and Geometric Ltd Bangalore and its various client locations like Boeing USA, Goodrich IDC India, Pratt Whitney USA, Alenia Aeronotica Italy etc.. Very good conceptual understanding in Structural Analysis Static, Durability Vibration Analysis and Physical sciences. Structural analysis using Finite Element Analysis and classical methods Static analysis for stress and performance computations using FEA and Hand Computations Modal Analysis Dynamic characterization of the structural system Dynamic response computations computation of glevel at various locations in the structure due to dynamic loads and subsequent static analysis for strength computations Creation of computer programs CFORTRAN and Microsoft excel sheets for efficient postprocessing of Finite element analysis results to generate MS against static and durability. Creation of software for engineering computation using CVisual C Technical report generation SOFTWARE SKILLS Structural Analysis Software NASTRAN both in UNIX and WINDOWS environment ASKA Exposure to ABAQUS, ANSYS, COSMOSM Pre Post processors PATRAN Exposure to ABAQUS CAE, FEMAP Programming languages CCVisual C and FORTRAN Others Microsoft Excel with Visual Basic, MATLAB etc. Boeing tools like IAS, IDTAS etc., Airbus tool ASSACOS, Alenia tool, LEANARDO ACADEMIC QUALIFICATIONS M.Tech Structural Engg. from National Institute of Technology Calicut 1987 73.4 marks B.Tech Civil Engg. from National Institute of Technology Calicut 1984 73.8 marks PROFESSIONAL EXPERIENCE I have 18 years of experience in the area of Aerospace Structural Analysis as given below 9 years in ISRO Satellite Centre and 9 years in Tata Consultancy Services Ltd, CADES Digitech Pvt Ltd and Geometric Ltd for its various clients Boeing USA, Bombardier UK, Goodrich IDC India, Pratt Whitney USA, KAL Korea, Alenia Aeronotica Italy etc. Currently working as Domain Expert in the field of Structural Analysis at Geometric Ltd Nature of work Helping various Structural Analysis projects in converting Physics of the model to Mathematical one. Hand computations for preliminary designs. Low order mathematical model through Static Condensation. Handling large quantum of results through simple computer programs. Position Domain Consultant Period March 2013 onwards Software Used PATRAN, NASTRAN, C, and Microsoft Excel I worked 9 years in Structures Group of ISRO Satellite Centre Bangalore From December 1988 November 1997 and involved in the structural analysis of Satellites and its subsystems and coupled analysis with launch vehicle as detailed below. Title Structural analysis of Spacecrafts. Position Senior Engineer Project Manager Description Involved in the finite element modeling and integrating the FE substructure models to make the main model for doing various types of analyses Static, Free and Forced Vibration etc. of whole spacecraft made up with Aluminum, Titanium, Composites etc.. Small order dynamic models Craig Bamptom approaches representing the whole structures were also generated to simulate the model in the integrated analysis with launch vehicles. Integrated analyses with launch vehicles were also done. Software Used ASKA, NASTRAN, COSMOSM, PATRAN, FEMVIEW, GEOSTAR, MSCXL Title Static and Vibration analysis of various Structural components of Spacecrafts. Position ScientistEngineer Team member Description Involved in the finite element modeling and structural analysis of spacecraft components to find out the adequacy of the design against various environmental loadings. Analysis includes multilevel substructure Both static and dynamic modeling to handle the huge Finite Element data. Software Used ASKA, FEMVIEW Title Configuration studies of components to meet the specification requirements and improved performance Position ScientistEngineerTeam leader Description Involved in the structural analysis of spacecraft components for optimizing the structural mass or for better functional performance, through repeated analysis of substructures with various properties and at different configuration. Substructure techniques were used to reduce the time of analysis by avoiding repetition of analysis at locations, were there is no change. Software Used ASKA, NASTRAN,FEMVIEW, MSCXL Title Performance studiescorrections. Position ScientistEngineer Team leader Description Involved in developing software for predicting the responses of spacecraft structural components in the post launch period. This involved in multilevel substructuring analysis with unit loading conditions which will be used to predict the performancecorrections at later with onboard data instantaneously with prewritten computer program. Software Used ASKA, NASTRAN,FEMVIEW, MSCXL Title Spacecraft testingmodel updating Position EngineerProject Manager Description Involved in Spacecraft testing static, vibration etc. as a member of testing team from analysis side. Test results were also predicted through analysis with test boundary loading conditions. These data are very much required for the preparation and execution of testing program. Mathematical models are also updated based on the test results. Software Used ASKA, NASTRAN,FEMVIEW, MSCXL Work done atthrough Cades Digitech Pvt. Limited Title Static and durability computation of an elevator structure Position Analysis Engineer at CADES Bangalore and at Alenia Aeronotica, PomiglianoItaly Period February 2011 onwards Description Involved in Static and Durability computations and optimization studies on an elevator structure of a Bombardier Aircraft which was made up with composite skin, spar and ribs with metallic fittings. Software Used PATRAN, NASTRAN, analysis tool LEANARDO and Microsoft Excel Title Static and durability computation of Actuator fitting and gusset joints Position Analysis Engineer at Korean Air Limited at BusanSouth Korea Period August 2010 January 2011 Description Involved in Static and Durability computations of structural components composite gusset joints and metallic actuator fitting of an aircraft door Airbus project. Computer programs were made to extract critical forces from FEA results for checking against buckling, bearing etc. for several joints from hundreds of load cases. For computing MS, calculation sheets are made with Airbus approved methods. Software Used NASTRAN, PATRAN, C programs and Microsoft Excel Calculation sheets Title Analytical support for Repair solution for Airbus fuselage skin Position Analysis Engineer at CADESBangalore and at AIRBUS HamburgGermany. Period January 2010 July 2010 Description Involved in guiding stress engineers in using internal forces and creation of calculation sheets for MS. Undergone training in ASSACOS software at Airbus plant in Hamburg. Software Used Microsoft Excel Calculation sheets Work done atthrough TATA Consultancy Services Title Static and Dynamic analysis of valve and actuator system Position Analysis Engineer at TCS Bangalore for Liebherr Aerospace Period February 2009 March 2009 Description Static analysis is done on the structure and MS is computed against normal and ultimate loads. Dynamic analysis is also done with sine excitation and shock. Software Used NASTRAN PATRAN Title Post processing and MS computation of Nacelle structures Position Analysis Engineer at client site Goodrich Aerospace IDC Bangalore Period August 2008 January 2009 Description Internal loads in Beam and Shell elements are extracted through PATRAN and MS is computed against normal loads, ultimate loads. Durability and damage tolerance studies are also conducted on skin and joints. Excel sheets are made to consider the effect of temperature on material properties. Software Used PATRAN, Excel Title Post processing and MS computation of Nacelle structures Position Analysis Engineer at TCS Bangalore Period May 2008 July 2008 Description Internal loads in Beam elements latch and hinge stiffener beamsare extracted through PATRAN and MS is computed against normal ultimate load conditions Software Used PATRAN, Excel Title Stress analysis of fuselage structure of a freighter aircraft Position Analysis Engineer at client site Boeing, Seattle USA Period January 2007 April 2008 Description The internal loads given by Loads group are used for computing the margin of safety at various joints and fuselage skin. Durability against fatigue loads is also checked. Stress computations are made for different load cycles which were released at different phases of design process. Software Used Client Tools IAS, IDTAS, FEADOMS etc. Title Design computation for nacelle structure Position Analysis Engineer at TCS Bangalore Period April 2006 December 2006 Description Design computation on Engine nacelle structure. Work involves identification of critical locations at various components Latch and Hinge beam, bumper joints etc. Internal loads obtained in the components for various load cases are supplied by the client. Maximum loads are extracted and margin of safety is computed and suggestions for design modifications are made Software Used PATRAN NASTRAN Title Static and Vibration Analysis of an unmanned aerial vehicle Structure. Position Analysis Engineer at TCS Bangalore Period January 2006 March 2006 Description Static and Vibration Analysis of an unmanned aerial vehicle Structure is done for a domestic client. The analysis work is done for both preliminary and intermediate configuration design. Structure is partly made up of composites. Software Used PATRAN NASTRAN Title Stress Analysis on FLAP Track structure of an aircraft wing Position As an Analysis Engineer in the design team Period September 2005 October 2005 at client site Bombardier Aerospace Belfast UK. November 2005 to December 2005 at TCS Bangalore Description Finite Element modeling and analyses were done for fixing the optimum location of flap track beams on the wing. Several configurations were studied with various loads Aerodynamic pressure and acceleration loads before reaching the optimum location. Studies were done for both retracted and extended positions of FLAPS. The work is done along with design team. Software Used PATRAN NASTRAN Title Transient response analysis of Acoustic panel of an aircraft engine Position Analysis Engineer at client site Pratt Whitney USA Period February 2004 December 2004 Description Transient response analyses were done to compute the responses in the acoustic panel composite of an aircraft engine. Panel is modeled as a component and the dynamic loads induced from the engine were put as an input force at its interface with fan case. Software Used NASTRAN PATRAN Title Generation of condensed StiffnessMass matrices of aircraft engine casings for creating analytical rotor dynamic models Position Analysis Engineer at client site Pratt Whitney USA Period February 2004 December 2004 Description Finite element models were generated from parametric UG models. The stiffness and mass matrices of casings with its engine interfaces were generated. In house programs were used in converting for transferring data between different software Software Used UG, ANSYS, NASTRAN and PATRAN Title Static and dynamic analysis on turbine blades of air craft engine Position Analysis Engineer at client site Pratt Whitney USA Period February 2004 December 2004 Description Static and free vibration analyses were done on several design configurations of engine blades to compute the frequencies. The effect of stress stiffening due to spinning is considered in the free vibration analysis. Campbell diagrams were generated to check the critical speed. In static analysis, the loads due to aerodynamic pressure were considered along with the loads due to spinning. Software Used ANSYS UG I also worked in the following projects involving aircraft components at TATA Consultancy Services Ltd Bangalore Title Stress analysis on Bleed valveManifold interface Position Analyst Team leader Description Non linear static analysis has been done to compute the stresses due to thermal and preloading on a Manifold assembly of an aircraft. Necessary suggestions were made where designs are not meeting the requirements. Software Used NASTRAN FEMAP Title Static and Dynamic response analysis of Air generator unit Position Analyst Team leader Description Static analysis and dynamic stress analysis has been done on an air generator unit of an aircraft for the loads specified by the client. Natural frequencies and areas for weight optimizations were identified. Software Used NASTRAN PATRAN Title Stress analysis on Heat Exchange Core Position Analyst Team leader Description Non linear static analysis has been done to compute the stresses due to thermal and preloading on a Heat exchanger system. Software Used ABAQUS, HYPERMESH and ABAQUS CAE I worked at Engineering Research Center at TripoliLibya for 5 years as a Consultant Engineer Structural Analysis Period November 1997 January 2003 Title Static and Vibration analysis of Industrial structural components Position Consultant Description Helped a team of engineers in doing Static and Vibrations analysis of various industrial structural components. Software Used ALGOR Title Software development for vibration analysis of beams in MATLAB environment Position Consultant Description Developed a program to do vibration analysis of beams with Finite Element philosophy using MATLAB routines. Software Used MATLAB Title Development of software for a Library Position Consultant Description Developed a computer program windows environment to do transaction in a library. Software Used Visual C Title Development of software for discrete Fourier Transformation Position Consultant Description Developed a computer program for DOS environment to do discrete Fourier transformation and to plot the results. Software Used Borland C I also involved in the structural analysis of various other structural systems nonaerospace and making computer programs for solving technical problems. Some of the projects I involved are Title Analysis of a Battery rack for earthquake loading Position Analysis Engineer Description Analyses were done on a battery rack to compute stresses due to earthquake loading. The load spectrum is taken from Indian standard code and the Spectrum method available in NASTRAN is used for computing the responses in the structure. Hand computations were also done with the extracted mode shape, participation factor etc. using Microsoft Excel and results were compared. As the structure is found unsafe against the specified loading, necessary suggestions to improve the earthquake resistance of the structure were given to the client. Software Used NASTRAN PATRAN Title Design of bourdon tube pressure measuring instrument Position Analysis Engineer Description Static analyses were carried out on bourdon tube for different section properties to assess its capability to measure the required pressure. Analysis results were compared with test results. Analysis model is updated using experimental results to include the local plastic behavior in the tube. This updated model is used to make new designs for different requirements. Software Used NASTRAN PATRAN Title Stress analysis of a Pump Case Position Analyst Team leader Description Static analysis has been done to compute the stresses due to pressure loading and piping loads and the stress and displacement plots were presented. Software Used NASTRAN PATRAN Title Conversion of data from different analysis software Position ScientistEngineer Description Involved in converting COSMOSM data to ASKA format using simple computer program. Software Used FORTRAN 77 Title Structural Design and Analysis of water supply system Position Assistant Engineer Design Description Involved in the design and analysis of structures like Clariflocculator, aerators, Water tanks etc. as per IS code. Software Used Title Design and Analysis water distribution network Position Assistant Engineer Design Description Developed software for evolving the diameter and also to make it to standard size of the pipes in the water distribution networks to keep the specified head at all locations. Software Used FORTRAN 77