Engineer Mechanical
Resume:
P. O. Box: **0162
US Citizen
Plano, TX 75094 *************@*****.***
Stress Engineer and Finite Element Specialist
TECHNICAL SKILLS:
Extensive experience in Linear and Non-Linear Structural Stress and
Vibration Analysis using classical hand calculations and Finite Element
Methods. Extensive experience in FEM Software Development and Testing.
CAE Software MSC/NASTRAN, MSC/PATRAN, ABAQUS, CATIA, Enovia
Languages C, FORTRAN, C++, Pearl, PCL, VBA
Environments UNIX, Microsoft Office, Microsoft Studio
EXPERIENCE:
STRUCTURAL ANALYSIS:
. Performed structural analysis on metallic and composite parts in FLE
(Fixed Leading Edge) and MLE (Movable Leading Edge) of Boeing 787 using
PATRAN, NASTRAN and Hand Calculations. Performed ECAP and GK-Joint
Analysis.
. Performed stress, quasi-static, modal, shock, frequency response, random
vibration, structural/thermal, fatigue and durability analyses on
aircraft wings, slats, fuselage and radar electronic boxes. Obtained
interface bending moments and shear loads using FEM methods (PATRAN &
NASTRAN) and hand calculation for safety margins in frames, shear ties,
stringers and skins. Used Excel spreadsheets and VBA to automate load
calculations for buckling and crippling analyses.
. Performed stress, vibration, crash, and thermal analyses on automotive
structures and components including Shock Towers, A pillar, White Body,
Fuel Tanks, Composite Hoods, Power Trains, Pistons, Connecting Rods,
Crankshafts, etc. at Ford and GM.
. Studied the effects of inherent process variables during the simultaneous
stretching and bending of open and closed section tubes in roll forming
using ABAQUS and PATRAN. Developed a procedure using FORTRAN to automate
analysis that bridged the gap between ABAQUS and PATRAN at GM Research
Center.
STRUCTURAL ANALYSIS SOFTWARE:
. Architected, designed, developed and implemented a complete pre and post
processor in MSC/PATRAN for ABAQUS that included the entire development
cycle of coding, testing and creation of regression tests. Led a team of
10 engineers in designing and developing a generic infrastructure in
MSC/PATRAN for 3D contact which was used for ABAQUS, NASTRAN, ANSYS and
MARC Interfaces. Spearheaded a project to add Parametric Study and
Optimization into NASTRAN Interface of PATRAN. Collaborated with the
NASTRAN development team to add new nonlinear stress analysis
capabilities into NASTRAN Interface.
. Dealt with Super Elements including persistent database entity, database
API, GUI design and QA requrements with a core design generic enough to
be used with all finite element solvers.
WORK HISTORY:
l-3Com, Greenville, TX Jan, 2013 - Present
Contract Stress Engineer
Checking structural integrity of Bombardier's Q400 aircraft modification
for special missions using FEM tools and classical hand calculations.
Developed tools using VBA, PCL and C++ to automate the structural analysis
process.
Boeing, Everett, WA May, 2011 - Jan,
2013
Contract Stress Engineer
Worked on 787-9 structural loads generation from the aero loads for input
into the FEM models of the Fixed Leading Edge (FLE) and the Moveable
Leading Edge (MLE). Generated Interface Loads from the FEM Analysis to be
used as input to the other structures of the airplane. Generated Internal
Loads from the FEM Analysis to assess the structural integrity of metallic
and composite parts using Boeing Design Methods and hand calculations.
Spirit Aero, Tulsa, OK May, 2006 - May, 2011
Contract Stress Engineer
Worked on 787-8 and 787-9 structural integrity for FLE(Fixed Leading Edge)
and MLE (Movable Leading Edge) Skins(Carbon Fiber Laminates),
Ribs(Aluminum) and Fasteners(Titanium) using PATRAN and NASTRAN. Used Catia
and Enovia to access parts and components and data. Used ECAP, GK-Joint,
CSW tools and Boeing Design Methods to do strength checks.
L3-Communications, Greenville, TX April, 2005 - March,
2006
Contract Stress Engineer
Performed margins checks on the modified structure of a DC-10. Used PATRAN
to create FEM model of the structure and NASTRAN to extract the interface
loads at the critical locations. Used classical Hand calculations for
buckling and crippling of frames, shear ties, stringers and skins using
bending moments and shear loads at the interfaces. Developed a procedure in
Excel using Macros and VBA subroutines to automate the calculations of
loads, stresses, buckling/crippling allowables and safety margins.
Lockheed Martin, Ft Worth, TX February, 2004 -
March, 2005
Contract Stress Engineer
Worked on the JSF program with designers to validate structural integrity
of aircraft components in Wing, Wing Carry Through and Forward Fuselage
bays. Performed stress and vibration analysis using Classical Hand
Calculations and FEM tools like NASTRAN, ABAQUS, and PATRAN. Used CATIA to
access the components drawings and VAS to visualize the assembly. Used PDM
to store and retrieve data files. Used Excel Spreadsheets to present
analysis data and write reports.
Raytheon, El Segundo, CA March, 2003 -
January, 2004
Contract Structural Analyst
Worked as stress and dynamics engineer at Raytheon Space and Airborne
Systems in El Segundo, CA. Performed stress, quasi-static, random, shock,
thermal, nonlinear, fatigue analysis using PATRAN, NASTRAN, ABAQUS and
classical hand calculations to verify structural intergrity and durability
of Electronic Boxes and Solder Ball Grid Arrays of micro chips. Wrote
programs using PCL (PATRAN) language to customize and automate pre and post
processing of Solder Ball Grid Arrays. Interpreted and evalutated stress
and vibration loads and provided design modifications to customers.
Documented and presented analysis results using Microsoft Office.
CRM Engineering, Kilgore, TX January, 2002 - January,
2003
Contract Structural Analyst
Worked as stress consultant on nonlinear stress analysis of oil exploration
drill pipes using ABAQUS and PATRAN. Streamlined the modeling and
postprocessing by automating the process using PCL language in PATRAN.
MSC Software, Santa Ana, CA August, 1991 - December, 2002
Senior Software Engineer
Responsible for the development and quality assurance of the MSC/NASTRAN
(finite-element analysis solver) and MSC/PATRAN (pre and post processor)
integration. Responsible for the integration of ABAQUS and PATRAN into
MSC/AdvancedFEA. Developed ABAQUS interface in MSC/PATRAN from concept to
completion. Implemented and enhanced NASTRAN interface in PATRAN for new
capabilities. Added pre and post processing of Superelements in PATRAN.
Devised nonlinear contact GUI generic enough to be used for most of the non
linear solvers. Implemented Optimisation Inteface in PATRAN.
SPAR AEROSPACE, Quebec, Canada
1989 - 1991
Structural Analyst
Worked on the Ku-Band and S-Band antenna structures on Space Station
'Freedom'. Performed stress, modal, quasi-static, frequency response, shock
and random vibration analyses using NASTRAN as the analysis code and PATRAN
as the pre- and post- processor. Used military standards and NASA
specifications to evaluate load factors and design parameters for ground
handling, launch, and landing in the Shuttle Transport.
ETA Inc., Prodigy Inc., INETEC Inc. Michigan
1985 - 1989
Structural Analyst
Involved in the design, structural analysis, design sensitivity studies,
and crash analysis of various car components such as chassis, shock towers,
hoods, automatic seat belts, fuel tanks, and instrument panels. Used
NASTRAN, ANSYS, DYNA3D, and PATRAN as analysis codes. Performed thermal
analysis on pistons and connecting rods. Assisted designers on CAD packages
such as PDGS(used by Ford), and CGS (used by GM).
PRIOR EXPERIENCE: 1979
- 1985
Held positions as a Teaching Assistant, University of Texas at Arlington,
and as a
Mechanical Engineer, Space Research Commission. Involved in the design,
manufacture and launching of solid propellant rockets.
EDUCATION and RESEARCH PROJECTS:
M.S. Mechanical Engineering, University of Texas at Arlington, 1985.
B.S. Mechanical Engineering, NED Engineering University, Pakistan, 1979.
Presented a paper on 'Boundary Element Method Approach to Heat Conduction
Problems in Heterogeneous Media', University of Texas at Arlington, 1985.
Developed a nozzle design for a plasma spray gun used for rebuilding seats
of turbine blades in aircraft engines, 1978.
PATENTS:
Early Vehicle Warning System (#6121896).
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