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joshey-bit/README.md

Rahul Joshi

πŸ”— LinkedIn


πŸ§‘β€πŸ’Ό Professional Summary

Mechanical Engineer with 4+ years of experience in structural design and analysis, with specialization in airframe stress engineering, composite structures, and fatigue analysis. Proficient in finite element methods (FEM), simulation-driven design, and UAV system development. Experienced in integrating AI/ML for predictive modeling and design automation. Strong research foundation with capabilities in structural optimization, health monitoring, and experimental validation.


🧠 Core Skills

Engineering Concepts Tools & Programming Soft Skills
Airframe Structures & Load Path Design ANSYS (GUI + APDL) First-Principles Thinking
Composite Materials & Failure Theories LS-DYNA (Crash, Impact Simulations) Problem Solving & Debugging
Fatigue & Damage Tolerance SolidWorks, Python, Pandas, TensorFlow Research & Technical Documentation
Finite Element Analysis (FEM) GMSH, pyNastran, ParaView Design Communication & Teamwork
Structural Optimization,ML & CAD Integration LangChain, LangGraph, Linux Systems Cross-functional Collaboration

πŸ’Ό Professional Experience

Airframe Structures Engineer

Okulo Aerospace Pvt. Ltd., Bengaluru
Nov 2022 – May 2025

Project 1: Solar Electric Glider (3β€―m span, 6β€―kg MTOW)

  • Designed GF/CF composite airframe optimized for strength-to-weight, manufacturability, and procurement.
  • Performed SFD, BMD, and shell deformation analysis under operational load conditions.
  • Defined load paths and provided CAD guidance considering structural and system integration constraints.
  • Generated refined FEM mesh; executed linear static, modal, and crash-landing analysis.
  • Validated results against UAV certification standards (Drone Certification Gazette).

Project 2: Defense Surveillance UAV (5β€―m span, 27β€―kg MTOW)

  • Designed airframe and structural layout tailored for mission endurance and payload integration.
  • Engineered vibration-isolated camera mounting to ensure image clarity and mechanical reliability.
  • Conducted FEM-based structural assessments (static, modal, crash) for validation.
  • Developed spreadsheet-based PLM tool to track design changes and streamline communication.

Project Associate – Structural Mechanics

National Aerospace Laboratories, Bengaluru
Aug 2021 – Oct 2022

Project 1: Rotor Dynamic Analysis – Small Gas Turbine (65,000 RPM)

  • Performed rotor dynamic evaluation of shaft system for critical speeds and modal stability.
  • Developed rotor-bearing model with gyroscopic and unbalance effects.
  • Created Campbell and critical speed diagrams; assessed fatigue and vibration risks.
  • Recommended shaft geometry and support modifications for improved rotor performance.

Project 2: Fatigue Test Chamber – Air Foil Bearing

  • Designed test rig with Pelton air turbine, shaft, bearing housing, and robust casing.
  • Performed structural and thermal FEA for safety under long-term cyclic loads.
  • Conducted fatigue life estimation and optimized for manufacturing and assembly.
  • Ensured containment safety in case of rotor failure.

πŸ”¬ Research & Technical Projects

Numerical Modeling – Roller Element Bearing

  • Simulated contact forces in faulty bearings using ODE-based modeling.
  • Applied Hertzian contact theory, spring-mass-damper system dynamics.
  • Validated model against experimental data with <5% error margin.
  • Tools: Python (OOP), Euler Method, Scientific Plotting.

Automated Structural Analysis Workflow

  • Created end-to-end automated design loop: CAD β†’ Mesh β†’ Analysis β†’ Post-process.
  • Integrated PythonOCC, GMSH, pyNastran, and ParaView into unified pipeline.
  • Enabled rapid iteration and optimization of structural models.

Elastic Property Estimation – Woven Composite Lamina

  • Modeled fiber matrix unit cell and applied micromechanics and homogenization theory.
  • Used Halpin-Tsai and Classical Laminate Theory for stiffness estimation.
  • Validated with literature data for woven composites.
  • Tools: Python, NumPy, GitHub Libraries.

Crash Landing Simulation – UAV on Soil

  • Simulated soil-UAV impact using LS-DYNA with deformable terrain model (MAT_005).
  • Captured contact behavior and strain energy dissipation using automatic node-to-surface interaction.
  • Provided design insights for crashworthiness enhancements.

πŸŽ“ Education

Degree Institution Duration
B.Tech in Mechanical Engineering M.S. Ramaiah University of Applied Sciences, Bengaluru 2015 – 2019

Final Year Project: Designed and analyzed chassis for programmable vacuum cleaner, including motor sizing and structural integrity evaluation.


πŸ“œ Certifications

Certification Provider Year
Machine Learning Specialization Coursera 2022
Advanced Learning Algorithms Coursera 2022
Finite Element Methods NPTEL 2022

πŸ” Research Interests

  • Structural Modeling and Applied Physics
  • Biomimetic Design for Stress-Guided Additive Manufacturing, Mechano-Chemical Coupled Systems for Stress-Sensing

Pinned Loading

  1. Bearing_Defect_Dynamics Bearing_Defect_Dynamics Public

    Bearing Dynamics Simulation under the effect of defects.

    Python 1

  2. PIB-Daily-Summary PIB-Daily-Summary Public

    A web app that automatically fetches and summarizes daily PIB (Press Information Bureau) press releases using AI (LLMs), presenting concise, student-friendly bullet points with topic and ministry t…

    Python

  3. TimeExchange TimeExchange Public

    vision is to make time a visible, valuable asset, fostering productivity, well-being, and a new economy powered by user-consented data.

    Python