Thesis Work: Prediction of Distortion due to Welding in Traction Converters

Construction, Engineering & Trades · Civil & Industrial Engineering · Mechanical Engineering

In short

This thesis project focuses on developing a computational method to predict welding-induced distortions in Alstom's traction converters. The work involves welding simulation, structural analysis, and validation, aiming to create a design tool for early prediction of weld distortion. The project is based in Vasteras, Sweden.

Responsibilities

Develop a finite element (FE) calculation method for predicting welding-induced distortion.
Integrate welding simulation with structural analysis.
Validate the computational approach through experimental measurements.
Create a design tool for engineers to predict weld distortion.
Conduct thermomechanical simulation to determine residual stresses.
Perform small deformation analysis and eigenvalue analysis for buckling load and distorted shape.
Carry out incremental large deformation analysis.
Potentially use the blinding hole drilling method to measure residual stress distribution.

Requirements

Background in Mechanical engineering.
Understanding of structural design.
Understanding of weld joint analysis.
Familiarity with FEA tools.
Good analytical skills.
Systems thinking mindset.
Master's degree project (20 weeks).

Desired Qualifications

Understanding of structural requirements of railway vehicle bodies, e.g. EN 12663-1.
Knowledge of weld modeling methods recommended by literature and across different industries.
Ability to scale weld load from weld simulation to structural analysis.
Ability to accurately determine both critical buckling load and distortion magnitude.
Thesis can be written in Swedish and/or English.

Benefits

Possibility to work from our office.

Skills

Finite Element AnalysisWeldingStructural AnalysisBuckling AnalysisResidual Stress AnalysisFEA

#thesis#engineering#welding#FEA#structural analysis#mechanical engineering#traction converters

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