Stress Engineer
EXPERIENCE
10/2005 – Present: Airbus Americas Engineering: Wichita, KS
Stress Engineer
A350XWB Fuselage - Primaily involved in the structural design and analysis on the primary structure of the A350XWB fuselage. Responsibilities include the design and analysis of the window belt and other cut-outs. Design activities include the sizing of the window frames and window belt skin along with skin and support structure of other cut-outs to sizing criteria such as damage tolerance (impact), unfolding, first ply failure, joint failure, and buckling. Analysis is performed using Airbus stress tools (ISAMI). Analysis requires extensive use of detailed finite element models (DFEMs) consisting of plate elements at the mid-plane locations of the represented structure. Responsible for maintenance of the window belt DFEM and full development of other cut-out DFEMs. DFEM development includes use of CATIA for geometry creation, PATRAN for meshing, properties, and loads, and NASTRAN for analysis. Analysis includes use of NASTRAN solution sequences 101 (linear static), 105 (linear buckling), and 106 (nonlinear). Other responsibilities involve analysis of skin/stringers and frame/clips including development of a DFEM for the analysis of the skin, frame, and clips in the area of the main deck floor and cargo floor junctions.
A380 Wing - Responsible for the modification of the A380 wing global fem and generation of finite element results databases for the wing design optimization effort. Activities included automation of the results database generation process for both static and fatigue databases, which resulted in a reduced delivery time for results to stress teams. Responsible for the validation effort of the global wing FEM. Responsible for structural analysis for the A380-800 wing main landing gear support structure for the A380e program. Experience includes reviewing, updating, and analyzing variations of the A380 Ultra-Fine Grid finite element model to incorporate updated fastener stiffness based on ESDU calculations, additional load components due to friction, and linear gaps to simulate contact between the gear rib and rear spar. Other tasks included assisting in running the A380e GFEM model and issuing interface loads reports to suppliers and participating in the A380e loads/FESPS gate review which resulted in the identification of several loading issues which were then corrected by the loads group.
3/2003 – 10/2005: Boeing Integrated Defense Systems: Wichita, KS
Stress Engineer – Airborne Laser Internal/External Loads
Internal loads responsibilities included the assistance in the development of methods and procedures to be used for the production of internal loads for the Integrated Product Teams (IPTs). This included creating, integrating, evaluating, and modifying finite element models (FEMs), and publishing the results to the IPTs. Experience with defining structural tests and requirements, requesting and extracting test data, and developing recommendations regarding model construction based on test results. External loads and dynamics responsibilities included the assistance of external loads and dynamics analysis of ABL aircraft structure. This included mapping of CFD pressure data to FEM meshes using Loads TK, creating FEM mass distributions from weight database data using Mass on Model, and creating PSDs (Power Spectral Density Functions) from test data using SPECTRA. Miscellaneous tasks included writing PCL (PATRAN Command Language) to help automate tasks and configuring and running NASTRAN on the LINUX cluster.
7/2002 - 3/...
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