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Engineering project

Digitizing Hyundai Rotem Railbus Structures

Project Code: SAP00338

Client: IRICO – Iran Khodro Rail Industries Co.

Origin of Design: Hyundai Rotem (South Korea)

Project Duration: 3 months – Team of 3 Engineers

Software Used: CATIA V5

Role: 3D Modeler, Drafting Specialist, and Local PDM Developer


Project Summary:
This project involved the complete 3D modeling and technical documentation of the structural body frames of A-CAR and B-CAR railbus wagons, based on original paper drawings obtained from Hyundai Rotem (South Korea). The project was commissioned by IRICO (Iran Khodro Rail Industries Co.), with the goal of digitizing all design data and creating a reliable technical archive for domestic manufacturing and localization.


Scope of Modeling:

  • Roof structure
  • Main floor frame
  • Side walls
  • Driver’s cab (CAB)


My Responsibilities:

  • 3D modeling of structural components
  • 2D drafting of assemblies and parts
  • Designing and implementing a local PDM workflow

Engineering Workflow Innovation:
Due to the absence of collaborative platforms such as 3DEXPERIENCE or ENOVIA, we created a local PDM system using native capabilities in CATIA V5.
Key elements included:

  • Assembly structure based on Publications, Context Management, and modular logic
  • Parallel teamwork on shared assemblies without conflict or data loss
  • A central Excel spreadsheet linked to all parts, drawings, and assemblies for parametric control

This experience gave me practical knowledge in deploying lightweight PDM systems and allowed me to take initiative as a process consultant for similar projects.


Technical Highlights:

  • Over 2,000 unique parts modeled
  • More than 8,000 total components including repetitions
  • Excel-driven CATIA modeling pipeline for automation and consistency
  • Fully linked technical archive including drawings, assemblies, and part libraries


Key Achievements:

  • Digitized Hyundai Rotem’s A-CAR and B-CAR railbus structures from legacy paper drawings
  • Delivered a production-ready technical archive
  • Implemented a scalable PDM-like system within CATIA V5 without external platforms
  • Significantly reduced modeling time with high accuracy and team coordination
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