SANJAY  JOSHI

sanjay.joshi@ymail.com

832.638.6858 (C)

LinkedIn Profile

Structural / Marine Engineer / Scientific Software Developer with over 20 years of experience in Structural and Marine Engineering. Expertise in structural dynamics, hydrodynamic coupling, nonlinear mechanics, finite and boundary elements, fixed & floating offshore structures, and scientific software development.

Personal Project

▪ Developed a website for various analyses in the cloud   https://floatdyn.com

EDUCATION

Post-doctoral Research (Computational Mechanics & plasticity), Case Western Reserve University, Cleveland, Ohio.

PhD (Structural dynamics and Hydrodynamic coupling), Indian Institute of Technology Bombay, India.

MS (Structural Engineering), Indian Institute of Science, Bangalore, India.

BS (Civil Engineering), Pune University, India.

REGISTRATION

● Licensed Professional Engineer – Texas

WORK AUTHORIZATION

● U.S. Citizen

KEY SKILLS

• Fundamental knowledge of Theoretical and Computational Mechanics

• Structural dynamics and hydrodynamic coupling

• Strong Math and Physics

• Matrix algebra and numerical methods

• Proficient in mathematical analysis programs MathCAD, MatLab, Maple, and Python

• Capable of programming in FORTRAN, C, C++, Python.

WORK EXPERIENCE

Software and Simulation Engineer

METECS (NASA Johnson Space Center), Houston, TX, USA

May 2017 – Present

• Lead Analyst for Vibration Isolation System for Exercise Device (E4D) onboard ISS

• Dynamic simulation of robotic arm onboard ISS - documented capture algorithm

Sr. Principal Engineer (Marine Engineering)

Oil Field Development Engineering LLC, Houston, TX, USA

Feb 2014 – May 2017

• Performed flotation, upend, and launch analysis of offshore jackets in MOSES, Structural analysis of snap-shot cases in SACS (Walter Oil & Gas Corporation, Coelacanth platform)

• Performed float-over analyses of deck structure in MOSES (Newfield Exploration Company, Lu Feng 7-2 Platform)

• Performed Finite Element Analysis (FEA) of platform components in ANSYS (Walter O&G Coelacanth)

• Developed in-house programs in VC++ and VB to evaluate base pressure for platforms, stresses in piles during lift

• Performed mooring and stability analysis, updated marine operating manual (MOM) (Devils Tower Spar)

Principal Structural Engineer

McDermott Engineering LLC, Houston, TX, USA

Sept 2011 – Feb 2014

• Performed pushover analysis of P1 & QU gravity platforms in 340’ water depth using USFOS (Browse CPF, Woodside Energy)

• Performed global performance analysis, analysis & design of buoyancy cans, analysis of link plate –Finite Element (FEA) in ANSYS, fatigue, & wear (Devils Tower spar)

• Enhanced in-house structural analysis and design program MicroSAS written in VC++

• Benchmarked following MicroSAS modules using MathCAD solutions: Time-domain analysis of stringer, AISC 13th edition code checks, Spectral fatigue analysis, Wave load on fixed structures

• Developed excel add-in in VB and VC++ for mooring analysis and time domain fatigue analysis

• Involved with company’s technology development efforts in collaboration with National University of Singapore

• Supported company engineers in their analysis and design efforts using MicroSAS

Principal Associate

Zentech, Inc. Houston, TX, USA

Mar 2007 – Sept 2011

• Led a team of software engineers developing software for structural and marine analysis of offshore structures. Also developed following modules in C++ for engineering calculations:

1. Wave loads on fixed structures, Spectral fatigue analysis, 

2. Wind loads as per ABS, API-RP-2A, API-4F

3. Longitudinal strength assessment of ship-like structures

4. MPME base shear & overturning moments for jack-ups as per SNAME

• Maintained, debugged, and enhanced Zentech’s proprietary hydrodynamic analysis program NEPTUNE. It is written in Fortran and C++. 

• Dynamic response analysis of a cable-supported floating bridge SR520 on lake Washington in Seattle to wind and wave loads

• Global structural analysis of several semisubmersibles & ships using design wave approach (long term and short term approaches). Notable example: Cheviot Octabuoy semisubmersible. Published a paper on long-term design wave approach in OMAE-2011.

• Developed multi-processor software using OpenMP in C++ for spectral fatigue analysis and performed fatigue analysis of Noble Roger Eason drill-ship

• Analysis of drilling riser and watch circle assessment for West Sirius semisubmersible for SeaDrill

• Reassessment of jacket platforms (fatigue, pushover, RBI study) for Pemex

• Design and analysis of protection structure to dissipate a specified amount of energy for widening project of Huey P. Long bridge over Mississippi river

• Time domain seismic analysis of pile-supported platform considering geometric and material nonlinearity of CX-15 platform for BPZ

• Drag resistance study for vessels & members using CFD software Star-CCM+ for Noble Drilling

• Mooring failure study of Noble Amos Runner semisubmersible during hurricane Ike

• Several dynamic positioning studies

• Several derrick & mast analyses for wind load as per API 4F 3rd edition, 3d FE analysis of clamps

• Several hydrodynamic / air-gap / accelerations analyses

Zentech India Pvt. Ltd., Mumbai, India

Principal Structural Engineer

Sept 2003 – Mar 2007

• Led a team of software engineers developing software for structural and marine analysis of offshore structures. Also wrote following modules in C++ for engineering calculations:

1. Fabrication drawings for tubular connections

2. Analysis of dynamic positioning system for vessels

3. Mooring analysis of Spar-Semisubmersible two-body system

4. Nonlinear pile-soil interaction analysis, API soil curves

5. Large angle stability of floating bodies

6. Geometrical modeling of fixed platforms: gaps, axial offsets, footprints, tubular end profiles

• Maintained, debugged, and enhanced in-house hydrodynamic analysis program NEPTUNE

• Pull-down study of several jack-up rigs. Published a paper in OMAE-2007

• Reassessment of a drilling platform (fatigue, pushover, RBI study) for Pemex

• Mooring analysis for barges

• Implemented Bergstrom-Boyce material model for elastomers in ABAQUS for Schlumberger. These routines were developed in Fortran.

• Several hydrodynamic / air-gap / accelerations analyses

Senior Research Associate

Indian Institute of Technology Bombay, India

Oct 2001 – Aug 2003

• Implemented robust hyper-singular boundary element method in a Fortran computer program. It is used for dynamic analysis of thin-walled structures submerged in water.

Research Associate

Case Western Reserve University Cleveland, Ohio, USA

Sept 1998 – Jan 2001

• Formulated a non-local gradient-dependent elastic-plastic constitutive model for strain-softening materials suitable for finite element (FEA) program. The work was funded by the U.S. National Science Foundation.

Doctoral Student

Indian Institute of Technology Bombay, India

Aug 1994 – Sept 1998

• Formulated a general analytical procedure and developed a Finite Element Analysis (FEA) computer program in Fortran for dynamic response analysis of a nuclear reactor consisting of tube arrays submerged in heavy water. Studied the dynamic characteristics of the system, especially coupling of the tubes through fluid, effects of sloshing, and proposed a method to control the sloshing effects on the response of tube array.

Assistant Engineer

CID Corporation, Bombay, India

Dec 1993 – Jul 1994

• Designed reinforced concrete buildings

Design Engineer

Development Consultants Ltd., Bombay, India

Feb 1993 – Nov 1993

• Performed time-domain seismic (dynamic) analysis of nuclear power plant structures using SAP

• Designed steel and concrete structures

PUBLICATIONS

• Joshi, S. P. and A. Goyal (1999) Dynamic Response Analysis of Tube Array in Partially Filled Calandria, Earthquake Engng. Struct. Dyn., 28, 287-309.

• Joshi, S. P. and A. Goyal (1999) Computational Procedure for Earthquake Response Analysis of Horizontal Tube Array in Calandria, ISET J. of Earthquake Technology, 36, 139-167. (received best paper award).

• Joshi, S. P. (2000) Equivalent Mechanical Model for Horizontal Vibration of Rigid Intze Tank, ISET J. of Earthquake Technology, 37, 39-46. (9 international citations)

• Joshi, S. P. (2001) Dynamic Response Analysis of Tube Array in Calandria to Rotational Vault Motion, Nuclear Engineering and Design, 205, 313-322.

• Goyal, A. and S. P. Joshi (2001) Earthquake Response Analysis of Tube Array in Partially Filled Calandria, 16th International Conference on Structural Mechanics in Reactor Technology (SMiRT 16), Washington, DC, August 12-17.

• Joshi, S. P. and V. Panoskaltsis (2000) Gradient-dependent Generalized Plasticity: Formulation and Algorithmic Implementation, Proceedings of COMPLAS, D.R.J. Owen, E. Onate and E. Hinton (Eds.), CIMNE, Barcelona.

• Joshi, S.P. (2003) Hypersingular boundary integral equation approach for added mass evaluation of submerged thin-walled structures, https://drive.google.com/file/d/0BziIRaDEfaNnUi03RWxmU0FybGc

• Chakrabarti, P., S. P. Joshi, and M. K. Maiti (2007) Pull-down Analysis of Jack-up Rigs, Proc. OMAE2007, San Diego.

• Chakrabarti, P., S. P. Joshi, K. Bose, and Majid Al-Sharif (2011) Hull Strength Design For A Floating Production Unit Using Long Term Hydrodynamic Response, Proc. OMAE2011, Rotterdam.

• Joshi, S. P. (2014) Hydrodynamic analysis of pressure-equalized buoy using hyper-singular boundary element approach, https://drive.google.com/file/d/0BziIRaDEfaNnYWJDN1ViR0pqTkk

• Joshi, S.P., MacLean, J.R., and Quiocho, L.J., “Microgravity Analysis of a Vibration Isolation System for Exploration Exercise Devices,” IMAC XXXVIII, A Conference on Structural Dynamics, 2020.

• S. O'Meara et al, "Effects of Stable and Unstable Surfaces on Cable-Based Resistive Exercises," 2021 IEEE Aerospace Conference (50100), Big Sky, MT, USA, 2021, pp. 1-12.

• L. Quiocho et al., "Modeling and Simulation for Exercise Vibration Isolation and Stabilization System Design," 2023 IEEE Aerospace Conference, Big Sky, MT, USA, 2023, pp. 1-19.

• Joshi, S. P. et al., Assessment of Base Loads Generated by an Exercise Device in the HALO Module, NASA Whitepaper, July 2024.

GRADUATE COURSES STUDIED

1. Mathematical methods

2. Matrix analysis of structures

3. Structural dynamics

4. Applied elasticity

5. Theory of plates and shells

6. Finite element structural analysis

7. Numerical methods

8. Expert systems

9. Aircraft structures

10. Design of substructures

11. Analysis and design of shell structures

12. Limit state design of concrete structures

13. Advanced reinforced and pre-stressed concrete

14. Experimental stress analysis

15. Earth and earth retaining structures

16. Non-linear analysis

17. Introduction to earthquake engineering

18. Mechanics of continuous media

19. Advanced topics in finite elements

20. Theory of plasticity and damage mechanics

21. Constitutive modeling theories

Advanced Engineering Systems in Motion: Dynamics of Three Dimensional (3D) Motion by Georgia Institute of Technology on Coursera (2017).

Mathematics for Machine Learning, a 3-course specialization by Imperial College London on Coursera (2018).

Git & GitHub Complete Masterclass : Beginner to Git Expert on Udemy (2021).

Web Application Technologies and Django (2022). 

Complete Modern C++ (C++11/14/17) on Udemy (2022).

Control Systems Analysis: Modeling of Dynamic Systems on Coursera (2023).

Modern Robotics: Mechanics, Planning, and Control, a 6-course specialization by Northwestern University on Coursera (2024).