How is creep behaviour in metals simulated and used in practical engineering applications?
What are the potential difficulties and challenges in modelling creep problems using FE software?
What are the potential errors and limitations of the FE creep solutions?
This eLearning course is aimed at engineers and designers who want to learn about how metal creep is modelled using FE software.
The course will cover creep theories and approximations that are widely used to analyse practical high-temperature engineering applications. Mathematical formulations and equations are intentionally kept to a minimum. Emphasis will be placed on how engineering design incorporates these theories and how the FE method models metal creep.
Difficulties encountered by both the FE user and the FE software in modelling creep will be highlighted using many examples to demonstrate creep behaviour and how to assess the 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 creep theory is required. The course is independent of any FE software code.
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.
This is a three-week live web-based eLearning course with a total of 6 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).
Self-test questions (optional homework)- Questions to reinforce the topics covered in the lectures
Solutions to self-test questions (Full solutions highlighting the key aspects)
More Self-test questions (optional homework)
Solutions to more self-test questions
"Super! Doesn't get better than this. Good idea to start having e-Learning courses."
"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."
|CTDkn1||State Norton's Power Law and the Hyperbolic-Sine Law for secondary creep.|
|CTDkn2||State the Time Hardening and Strain Hardening Laws, based on Norton s Power Law, for primary creep.|
|CTDkn3||State how typical creep laws depend on temperature.|
|CTDkn4||List the range of creep and time-dependent constitutive models available in any finite element used.|
|CTDkn5||Identify the extent to which your application software allows modification of creep solution parameters.|
|CTDkn6||State the basic definitions of stress relaxation and creep.|
|CTDco1||Describe and illustrate a standard creep curve for steels, highlighting the steady state regime.|
|CTDco2||Using the standard creep curve, describe the effects of (i) increasing stress level and (ii) removing the stress.|
|CTDco3||Describe different ways of presenting creep data.|
|CTDco4||Explain the term Stress Redistribution in a structure subject to creep under load.|
|CTDco5||Discuss the term Creep Rupture and illustrate how data related to this is commonly presented.|
|CTDco6||Describe how a creep damage law and life fraction rule are used.|
|CTDco7||Explain, in general terms, the creep solution process as typically implemented in finite element systems.|
|CTDco8||Outline how the Creep Strain Tolerance and change in stress level during a time interval are used to control the accuracy of creep calculations.|
|CTDco9||Contrast the creep solution procedure with the procedure commonly employed for plasticity.|
|CTDco10||Discuss the complexities arising from a multiaxial stress state and illustrate how these are normally handled.|
|CTDco11||Discuss the advantage and validity of using a stiffness matrix that doesn't vary during the creep solution.|
|CTDco12||Discuss the theoretical solution for steady state creep stresses for a beam in bending.|
|CTDco13||Discuss the theoretical solution for steady state creep stresses for a thick cylinder under internal pressure.|
|CTDco14||Explain why it is important to carefully consider the output required from a finite element system for this type of analysis.|
|CTDco17||Contrast Explicit and Implicit Creep Integration.|
|CTDco18||Discuss how the interaction of creep and fatigue is generally handled in design standards or Codes of Practice.|
|CTDco19||Describe why a creep analysis is necessary for relevant components in your organisation or sector.|
|CTDap1||Define creep constitutive data as appropriate.|
|CTDap2||Use FEA to obtain creep solutions for a range of typical components.|
|CTDap3||Use facilities to enter user-defined creep constitutive laws as appropriate.|
|CTDap4||Conduct effective creep analyses for stiffness and strength.|
|CTDap6||Conduct effective creep - fatigue interaction studies.|
|CTDan1||Analyse the results from time dependent analyses of typical pressure components and determine whether they satisfy relevant design standard or code of practice r...|
|CTDsy1||Plan a series of simple benchmarks in support of a more complex creep or time dependent analysis.|
|CTDsy2||Plan modelling strategies for time dependent problems.|
|CTDsy3||Prepare an analysis specification for a time dependent analysis, including modelling strategy, highlighting any assumptions relating to geometry, loads, boundary...|
|CTDev1||Select appropriate idealisation(s) for components / structures, that are consistent with the objectives of the time dependent analyses.|
|CTDev4||Select appropriate solution schemes for time dependent problems.|
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*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)
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.