Structural Engineering Ph D

Stephen P. Oberrecht, Ph.D.

***** **** ***, *** *****, CA 92128

Cell: 619-***-**** E-mail: ********@*****.***

2025

EDUCATION

Ph.D. Computational Mechanics, UCSD, 2014

M.S. Structural Engineering, UCSD, 2009

B.S. Structural Engineering, UCSD, 2007

PROFESSIONAL EXPERIENCE

Manager, Structures Engineering

Aevex Aerospace

37260 Sky Canyon Dr., Murrieta, CA

Sept 2024-Present

Staff Structural Analyst

Stratolaunch LLC

555 Riccomini Ave, Mojave, CA

June 2023-Aug 2024

Structural Analysis Engineer II (Hybrid)

Panasonic Avionics Corporation

May 2022-May 2023

3347 Michelson Dr. Irvine, CA 92612

Sr. Principal Aerospace Eng., Structural,

Northrop Grumman Corporation

Jan 2020-Mar 2022

Bld. 7, 16765 W. Bernardo Dr., San Diego CA, 92127

Aerospace Engineer, US Navy

Fleet Readiness Center South West (FRCSW)

Oct 2017-Jan 2020

PO BOX 347058, San Diego, CA 92135-7058

Naval Architect, US Navy

South West Regional Maintenance Center (SWRMC)

Oct 2015-Oct 2017

3755 Brinser St., Suite 1, San Diego, CA, 92136.

Adjunct Professor, SDSU, Aerospace Eng.

Jan 2015-Aug 2019

5500 Camponile Dr. San Diego, CA 92182.

University Instructor, UCSD, Structural Eng.

Jun 2015- Aug 2019

9500 Gilman Drive, Mail Code 0085,

La Jolla, CA 92023-0085.

PROFESSIONAL REGISTRATION, LICENSES

EIT, 2007, CA 126870.

FAA Sport Pilot License 4359739.

FAA Small UAV Remote Pilot License 4648865.

US MILITARY SERVICE (VETERAN)

Enlisted Navy Nuclear Machinist’s Mate 6 years of honorable service.

UNIVERSITY COURSES TAUGHT

Graduate Theory of Elasticity (AE621),

--SDSU, 2015, 2018, 2019

Engineering Dynamics (AE220),

--SDSU, 2016, 2017

Matrix Analysis of Structures (SE130B),

--UCSD, 2014, 2015, 2016, 2019

Solid Mechanics II (SE110B),

--UCSD, 2015

Classical Structural Analysis (SE130A),

--UCSD, 2014, 2015, 2018

Introduction to Solid Mechanics (CIVE301),

--SDSU, 2015

Mechanics of Materials (MENG370),

--USD, 2015

SOFTWARE

--Femap

--Concur

--NX Simcenter

--MATLAB

--NASTRAN FEA

--ABAQUS FEA

--Ansys, and Spaceclaim

--MSC Patran

Stephen P. Oberrecht, Ph.D.

2025

AWARDS AND HONORS

Navy and Marine Corps Achievement Medal 1998.

Navy Boot Camp Letter of Commendation as the divisional Education Petty Officer (EPO) 1995.

Member of Phi Beta Kappa Honor Society 2004.

UCSD Structural Engineering Departmental Fellowship, 2014. PROFESSIONAL DUTIES

Managed a team of stress and liaison engineers through fast paced airframe modification and missionization— Aevex

Served as analysis lead in collaboration with adjacent teams, Chief Engineer, and he program office--Aevex

Lead an interdisciplinary trade study on a hypersonic, hot structure, skin design--Stratolaunch

Non-linear contact and dissipative material yielding--Stratolaunch

High temperature sequentially-coupled aero-thermo-elastic analysis--Stratolaunch

Output field mapping among different models--Stratolaunch

Spot-weld strength analysis and testing--Stratolaunch

Slip joint thermal expansion interfaces and tuned connections--Stratolaunch

Trade studies: thickness, weight, aero-elastic venting, themo-mechanical deformations, material, contact sensitivity--Stratolaunch

Critical Design Review (CDR) –Aevex, Stratolaunch, Panasonic, Northrop Grumman

Breakout Detail FEM— Aevex, Stratolaunch, Panasonic, Northrop Grumman

Hand Calculations-- Aevex, Stratolaunch, Panasonic, Northrop Grumman

Analytical model reduction-- Aevex, Stratolaunch, Panasonic, Northrop Grumman

Model validation checks-- Aevex, Stratolaunch, Panasonic, Northrop Grumman

Skin, bulkhead, pressure vessel, raceway, and substructure analysis--Stratolaunch

Sheet metal design and analysis-- Aevex, Stratolaunch, Panasonic.

Temperature dependent material mapping--Stratolaunch

Methods development with idealized models-- Aevex, Stratolaunch, Panasonic, Northrop Grumman

Lead design collaboration in multidisciplinary team—Aevex, Stratolaunch

Fast-paced analysis driven design--Starting with FEM-- Aevex, Stratolaunch, Panasonic, Northrop Grumman

Heat shield design and analysis--Stratolaunch

TPS vs Hot Structure, trade studies--Stratolaunch

Nonlinear structure/mechanism analysis--Stratolaunch

Analysis of hot-gas sealing vs internal pressure venting--Stratolaunch

Manufacturing Process Review-- Aevex, Stratolaunch, Panasonic, Northrop Grumman

Linear and non-linear static abuse load analysis. –Panasonic Avionics

Random vibration fatigue, modal, and harmonic response analysis of avionics components. –Panasonic Avionics

Experimental dynamic impact response testing of avionics components–Panasonic Avionics

Very large scale DFEM development for a new composite and metallic airframe. --Northrop Grumman

Performed structural, stress, analysis. Aevex, Stratolaunch, Panasonic, Northrop Grumman, FRCSW, SWRMC

Wrote multiple complex algorithms including tools to ‘pre’ and ‘post-process’ unique NASTRAN multipoint constraints and data (RBE3). --Northrop Grumman

Worked design team performing structural and kinematic stability analysis for arresting hooks, flight control components, and landing gear assemblies. Northrop Grumman Stephen P. Oberrecht, Ph.D.

2025

Worked on critical initial phases or airframe design, performing hand, and computational, analysis for an emerging Navy fighter. Communicated and reported analysis results to team as well as cross functional teams. I coordinated and worked with other analysts to integrate module models into larger assembly models. --Northrop Grumman

Performed multiple Advanced Aerospace Engineering Repair Analyses. This involved planning and coordinating complex air vehicle engineering repairs requiring advanced analysis. --Northrop Grumman, FRCSW

Supported complex F/A-18 Hornet (Super Hornet) air vehicle engineering repairs requiring advanced analysis and root cause evaluation.--FRCSW

Contributed to the Stress Analysis Working Group (SAWG) meetings and tasking. --FRCSW

Mentored junior engineers increasing their knowledge, skills, and abilities in theory, solid-mechanics, and procedures and agency policies. Aevex, Stratolaunch, Panasonic, Northrop Grumman, FRCSW, SWRMC

Wrote robust MATLAB algorithms to generalize analysis procedures. This involved generating finite element and analytical models. --FRCSW

Served on the Surface Ship Structural Integrity Steering Committee (SSSISC), drafting key documents for tooling and improved analysis capabilities documents. --SWRMC

Taught one-week courses, Repair of Naval Structures, and Structural Analysis (including FEM) for on-site engineers.

--SWRMC

Wrote research proposals and investigated academic initiatives in collaboration with NPS and NSWCCD, which included site visits and advanced technical collaboration. --SWRMC

Taught courses in structural, mechanical, aeronautical, and aerospace engineering at San Diego State University and the University of California San Diego. This required a dedicated focus on effective oral communication, with respect for both intellectual agency and diverse student ethnic and socio-economic backgrounds. --UCSD, SDSU, USD

Prepared course lesson plans and exam schedules. --UCSD, SDSU, USD

Applied my background in computational mechanics, programming, and experimental viscoelastic material characterization. --UCSD

Lead material characterization research, which involved finding the constitutive properties of complex materials. Acted as lead, to own and drive material characterization and testing to support modeling efforts. -- UCSD

Designed and built an automated prototype rheometer, developing all control and data acquisition software. -- UCSD

Conducted intricate circuit design, sensor instrumentation, and automated servo as well as stepper controls. -- UCSD

Successfully programmed, tested, launched, and maintained the prototype equipment. --UCSD

Spearheaded field trials and device service application in support of Marine Mammal dissections handled by an International team of biologists at the Smithsonian Institute, proving the effectiveness and practicality of my prototype rheometer. --UCSD

Produced custom calibration standards using unique thermoplastic (soft polymer) materials and analyzed the important chemical processes for property degradation. --UCSD

Submitted peer reviewed publications, which were accepted by a reputable journal of numerical methods (IJNME).

--UCSD

Developed improved, and novel, finite element analysis methods for brittle “rigidtropic” materials. --UCSD

Invented and developed custom experimental device for use in dynamical mechanical analysis for viscoelastic material characterization. This included research, design, development, testing, and qualification of the device. -- UCSD

Performed vibroacoustic FEA analysis of marine mammal aural structures using finite element methods. --UCSD Stephen P. Oberrecht, Ph.D.

2025

Formulated fully coupled and sequentially coupled thermal-mechanical models for the analysis of residual stresses in braze welded Beryllium cylinders. --UCSD

Designed experiments using thermal imaging to track solidifying metals to validate thermal-mechanically coupled FEA models. --UCSD

Created a test bed that uses a laser displacement sensor in an automated stepper table to make digital images of surfaces for digital image correlation. --UCSD

Performed testing of elastomeric polymer using a universal testing machine. --UCSD LEADERSHIP

I managed, and served as lead for, an analysis and liaison engineering team. –Aevex

I lead concept meetings and structural analysis efforts for very complex thermomechanical hypersonic structures. -

-Stratolaunch

I exercised leadership while serving as a US Navy Active Duty Enlisted Petty Officer, as a qualified Chief Reactor Watch, and watch team Level Leader. I also developed my leadership experience as a Nuclear Power School Class Leader, Nuclear Prototype Class Leader, and Boot camp Education Petty Officer (EPO). --US Navy

I demonstrated leadership as an Adjunct Professor and academic mentor. --UCSD, SDSU, USD

I was the (2023) President of the San Diego Ultralight Association, non-profit member of Experimental Aviation Association—SDUA, EAA,

UCSD PROVISIONAL PATENT (2013)

UCSD Ref. No.2014-183-1, MULTI-MODE LINEAR RHEOMETER FOR USE IN SOFT TISSUE CHARACTERIZATION—now expired.

RESEARCH PUBLICATIONS

S. P. Oberrecht, P. Krysl. “Generalized B-bar: unlocking multiple compliance modes of finite elements with stiff-fiber anisotropy.” IJNME 2016; doi: 10.1002/nme.5223

S. P. Oberrecht, J. Novák, P. Krysl. “B-bar Finite Element Methods for Anisotropic Elasticity,” IJNME, 314, 2013.

S. P. Oberrecht, P. Krysl, T. Cranford. “Sound transmission validation and sensitivity studies in numerical models” 2013 Effects of Noise on Aquatic Life,027*-******, 2013. PRESENTATIONS

Spectral Decomposition FEM B-Bar and GSRI, ATA Engineering 2016.

Rheometer Presentation for Medical Applications, Scripps Mercy Hospital 2014.

Doctoral Defense, UCSD 2014.

B-bar and GSRI FEM, Graduate Seminar, UCSD 2014.

Stabilized B-Bar and GSRI, SDSU Computational Science Resource Center Colloquium 2014.

Marine Mammal Field Rheometer and Analysis Methods, UCSD Poster Expo 2013.

Residual Stress and Thermo-mechanical Coupling, LANL 2009.

The Effects of Residual Stresses in the Failure of Welded HCP Materials, UCSD Poster Expo 2009. Note: I am a U.S. citizen, honorably discharged Navy Veteran, and have a Secret Security Clearance Stephen P. Oberrecht, Ph.D.

2025

NAVY CIVILIAN TRAINING AND CERTIFICATION

Boeing Structural Repair Course 2019 (Boeing

Representative)

Fatigue Course 2019 (R. Ghanimati)

Materials Failure Analysis 2019 (D. Harach)

Residual Stress Course 2019 (J. Dealba)

Level 1, Static Stress Analyst, FRCSW 2018

Level 1, Fatigue Peak Stress Analyst, FRCSW 2018

Level 1, Linear Instability Stress Analyst, FRCSW 2018

Level 1, Linear FEA Stress Analyst, FRCSW 2018

Practical Stress Analysis 2018 (P. Bell)

Statics Short Course 2018 (M. Haririan)

FRCSW, Drawing Course 2018 (B. Nguyen)

Loads Primer 2018 (M. Haririan)

NX Short Course 2017 (M. Haririan)

NASTRAN Training, 2017 ATA

Defense Acquisition Workforce Improvement Act

(DAWIA), Engineering Field, Level I. 2017

Naval Ship Strength Analysis 2016 (N. Nappi Sr.)

Strength Analysis for Naval Architects (E. Davis)

Dozens of active-duty military Navy Nuclear training courses including Nuclear MM A-School, Naval

Nuclear Power School, Navy Nuclear Power

Prototype School, and Navy Steam Plant

Maintenance School.

HOBBIES

I love Flying! I have a Sport Pilot License, and Part 107 UAV License

Building an experimental aircraft ‘Stits Flutterbug’.

Contact this candidate