Conceive, manage and ensure the successful completion of a range of consulting efforts involving large-deformation structural mechanics. Projects typically involve close integration of laboratory testing (to derive material constitutive laws and validate computational models), finite element analysis (to determine detailed system-level response), and fundamental engineering theory. Manage and perform all relevant technical work and calculations, and compile and present results to business… Show more Conceive, manage and ensure the successful completion of a range of consulting efforts involving large-deformation structural mechanics. Projects typically involve close integration of laboratory testing (to derive material constitutive laws and validate computational models), finite element analysis (to determine detailed system-level response), and fundamental engineering theory. Manage and perform all relevant technical work and calculations, and compile and present results to business customers in readily understandable format. Regularly interact with and lead team members who are based in Hyderabad, India.Highlights of specific projects and responsibilities:-- Design and analysis of standard- and custom-shape seals made from DuPont elastomers for use in semiconductor and oil and gas applications. Received Innovation Day award for one of these projects.-- Finite element analysis of passenger car and heavy truck tires to investigate potential benefits of using DuPont reinforcing materials. Use of Abaqus/Standard to calculate quasi-static load response and Abaqus/Explicit to predict rolling resistance performance.-- Extensive use of Abaqus, Matlab, Kornucopia ML, and Linux-based High-Performance Computing (HPC) resources to completely automate large FEA parametric studies of agricultural crop response to wind loading. Most recent effort built, ran, and post-processed 437,400 cases automatically.-- Adoption and development of Discrete Element Method (DEM) modeling techniques within Abaqus/Explicit and RockyDEM to simulate the flow behavior of dry granular particulate media.-- Calibration of hyperelastic and viscoelastic material constitutive laws for rubber, polymer, and reinforcing cord materials.-- Continuous development of new technical capabilities that will enhance the value of the workgroup, including new simulation techniques and mathematical software (Matlab and Kornucopia ML). Show less

Manage all technical and programmatic aspects of multiple contracts to ensure successful completion of projects for a variety of aerospace customers. Primary project in this role focused on the development of a user-defined element for ABAQUS/Standard, implemented using the Fortran subroutine UEL. This nonlinear element models the oxidation of C/SiC composite materials, and has been extensively verified using nonlinear thermal analyses. After successfully demonstrating the 2D oxidation… Show more Manage all technical and programmatic aspects of multiple contracts to ensure successful completion of projects for a variety of aerospace customers. Primary project in this role focused on the development of a user-defined element for ABAQUS/Standard, implemented using the Fortran subroutine UEL. This nonlinear element models the oxidation of C/SiC composite materials, and has been extensively verified using nonlinear thermal analyses. After successfully demonstrating the 2D oxidation element, MR&D was awarded additional funding from NASA to develop a 3D version of the element. This physics-based life prediction model can readily be extended to other ceramic matrix composite (CMC) material systems.Overall job responsibilities include:-- Write proposals to NASA, Department of Defense agencies, and aerospace companies (Boeing, Lockheed-Martin, Rolls-Royce, etc.) that integrate innovative computational mechanics methods and testing tasks to address various aerospace R&D needs.-- Monitor technical progress, schedule, and budget for multiple contracts.-- Execute technical tasks and coordinate efforts of junior engineers as needed.-- Regularly interact with clients and subcontractors.-- Build partnerships with complementary organizations (testing labs, fabricators, etc.) to expand MR&D's client base through unique technical work plans. Show less

Serve as Principal Investigator for numerous research and development projects. Defining project in this role included the development of two Fortran subroutines, UMATHT and UMAT, to predict the thermal and mechanical performance of the Space Shuttle Crack Repair Material. These subroutines were implemented in ABAQUS/Standard and modeled the changes in material behavior due to pyrolysis and oxidation reactions, and predicted the failure of elements as determined by several stress-based… Show more Serve as Principal Investigator for numerous research and development projects. Defining project in this role included the development of two Fortran subroutines, UMATHT and UMAT, to predict the thermal and mechanical performance of the Space Shuttle Crack Repair Material. These subroutines were implemented in ABAQUS/Standard and modeled the changes in material behavior due to pyrolysis and oxidation reactions, and predicted the failure of elements as determined by several stress-based criteria. MR&D was awarded additional funding from NASA to further develop this model into a real-time predictive tool for use in Space Shuttle missions.Overall job responsibilities include:-- Independently plan and execute solutions for complex technical problems.-- Lead, direct and coordinate the work of junior engineers.-- Regularly write monthly & final reports.-- Regularly prepare and give oral presentations to communicate results to customers. Show less

Perform a range of design and analysis tasks on consulting contracts for many different customers in the aerospace industry using various computational mechanics methods.-- Extensively use ABAQUS and ANSYS finite element analysis applications to perform structural analyses, thermal stress analyses, heat transfer analyses, and dynamic analyses. Vast majority of work was performed on components made from orthotropic materials such as 2D and 3D continuous fiber reinforced composites.--… Show more Perform a range of design and analysis tasks on consulting contracts for many different customers in the aerospace industry using various computational mechanics methods.-- Extensively use ABAQUS and ANSYS finite element analysis applications to perform structural analyses, thermal stress analyses, heat transfer analyses, and dynamic analyses. Vast majority of work was performed on components made from orthotropic materials such as 2D and 3D continuous fiber reinforced composites.-- Use micromechanics tools to calculate composite thermo-elastic properties and strengths based on theories such as the Composite Cylinders Assemblage, Self-Consistent Scheme, Composite Spheres Assemblage, etc.-- Implement closed-form analytical solutions to verify numerical analysis results.Additional Selected Consulting Projects:-- Assessment of potential for delamination growth in the Space Shuttle Tile Overlay Repair Plate.-- Design and analysis of refractory composite wing leading edges cooled by heat pipes.-- Design and analysis of C/SiC ceramic matrix composite Plug Repair and Rigid Overwrap Repair components for use on the Space Shuttle. Show less

Various technical tasks related to the CH-47 Chinook dual-rotor helicopter.-- Updating and revision of technical drawings in CATIA and legacy film formats.-- Creation of task sheets for Low-Rate Initial Production phase of updated version of the CH-47.-- Design and CATIA drawings of closeout plates for updated CH-47 bulkhead.