Metals Material Modelling: Welding Simulation and Residual Stresses

How are residual stresses caused by welding in metals simulated and used in practical engineering applications?
What are the difficulties and challenges of using FE software to simulate welding?
What are the potential errors and limitations of the FE solutions in predicting residual stresses caused by welding?

This course gives you practical advice with a minimum of theory.

Metals Material Modelling:

Welding Simulation and Residual Stresses

This eLearning course is aimed at engineers and designers who want to become familiar with how the Finite Element method can be used to simulate the welding process in metals and the residual stresses arising from welding.

The course will cover the FE modelling of the welding of metallic structures using filler material where the high temperatures experienced by the materials during welding generate thermo-mechanical stresses and microstructural changes. FE solutions for the post-weld residual stresses will be discussed and compared to experimental measurements.

Difficulties encountered by the FE user and the limitations of FE software in modelling the welding process will be highlighted using examples to demonstrate the mechanics of welding and the expected accuracy of the FE solutions.

The pre-requisite for this course is a working knowledge of linear finite element theory and applications. No prior knowledge of Welding is required. The course is independent of any finite element software code.

The objectives of this course are:

  • To provide delegates with a good understanding of the welding process used in industry to join two metallic structures
  • To highlight the difficulties, limitations and sources of error that may be encountered in modelling welding and the post-weld residual stresses
  • To present examples of practical welding problems and highlight the validation of the FE solutions

 

Why an e-learning class?

Travel and training budgets are always tight! The e-Learning course has been developed to help you meet your training needs.

If your company has a group of engineers, or specific training requirements across any subjects, please contact us to discuss options.


Course Program

This is a two-week live web-based eLearning course with a total of 4 hours of tuition (presented as a two-hour session per week). Delegates will be provided with copies of all lecture slides including many self-test problems (with worked solutions).

Session 1

Introduction to Welding

  • Welding Technology
  • Microstructural changes during welding
  • Cracks around welds
  • Post-weld heat treatment
  • Thermo-mechanical behaviour
  • Weld repair

Introduction to Residual Stresses

  • Thermal mismatch
  • Residual stresses resulting from plastic deformation
  • Residual stresses in welds
  • Experimental measurement of residual stresses
  • Beneficial residual stresses

Self-test questions (optional homework)- Questions to reinforce the topics covered in the lectures

 

Session 2

FE Simulation of Welding

  • Material properties required to model welding
  • Testing to obtain material constants for welding simulation
  • Temperature dependency of material properties
  • Element birth technique
  • Cross-weld test specimens
  • Modelling phase transformations in weld simulations
  • Damage Mechanics approach

Solutions to self-test questions (Full solutions highlighting the key aspects)

 

Welding and Residual Stresses Case Studies

  • Limitations of FE simulations of welding
  • Welded pipe branch case study
  • Welding of thin structures case study
  • Verification of FE residual stress solutions

Summary of key points, tips and guidelines

 

Feedback from former e-Learning students:

"Super! Doesn't get better than this. Good idea to start having e-Learning courses."

R.P.

"I'm really happy not to pay a big fraction of my annual training budget to airlines and hotels. A BIG plus to e-learning."

V.G.

 

PSE

PSE Competencies addressed by this training course

MASco19Discuss common material characteristics and typical manufacturing related flaws in welding.
FATco19Discuss the nature of residual stresses in welded joints.
FATkn5List a common source of harmful tensile residual stress in your company products.
FAFMco36Discuss the significance of weld strength mismatch on the fracture behaviour of welded joints.
FAFMco37Describe a typical welding residual stress distribution for a common welded joint.
CMPSco8Describe the difficulties involved in including residual stresses and environmental effects in analyses.
TMBco24Describe the effects of a phase change on a thermal solution and the challenges this brings to the solution.

 

Two-Session Online Training Course

2 hours per session
PDH Credits - 4

Attend the live sessions, or view the recordings at your convenience.

Not Available to Attend this Time?

Would you like us to notify you when the next course is open for enrollment? If so, add yourself to the eLearning Waitlist


Please click here to view the FAQ section, or if you need to contact NAFEMS about this course.

Engineering Board PDH Credits

*It is your individual responsibility to check whether these e-learning courses satisfy the criteria set-out by your state engineering board. NAFEMS does not guarantee that your individual board will accept these courses for PDH credit, but we believe that the courses comply with regulations in most US states (except Florida, North Carolina, Louisiana, and New York, where providors are required to be pre-approved)


Special Note(s):

Telephony surcharges may apply for attendees who are located outside of North America, South America and Europe. These surcharges are related to individuals who join the audio portion of the web-meeting by calling in to the provided toll/toll-free teleconferencing lines. We have made a VoIP option available so anyone attending the class can join using a headset (headphones) connected to the computer. There is no associated surcharge to utilize the VoIP option, and is actually encouraged to ensure NAFEMS is able to keep the e-Learning course fees as low as possible. Please send an email to the e-Learning coordinator (e-learning @ nafems.org ) to determine if these surcharges may apply to your specific case.

Just as with a live face-to-face training course, each registration only covers one person. If you plan to register a large group (10+), please send an email to e-learning @ nafems.org in advance for group discounts.

For NAFEMS cancellation and transfer policy, click here.