Course Description
The Durability Analysis I-deas NX Series course provides the skills needed to use durability for fatigue analysis of mechanical components. Theoretical and practical aspects of using finite element analysis for fatigue evaluation are covered. Students will learn relevant model building techniques, perform stress analysis, evaluate fatigue damage and learn how to interpret results.
In addition to reviewing the theoretical background associated with fatigue analysis, the course will also provide direct instruction and hands on experience using I-deas NX Durability. Every option on every form unique to this task will be described in detail so that the attendee will know how and when to use a particular option.
Course instructors have been using this software in consulting applications for years and understand the attendees need to get practical instruction that will lead to productive use of this software package.
This course is intended for:
- Designers and engineers who need to evaluate the fatigue life of mechanical components.
Intermediate
- Previous experience with finite element modeling and analysis.
- I-deas Analysis: Pre and Post-processing course
- And I-deas Linear Solvers course or equivalent experience using I-deas Simulation
Instructions will include a review of basic fatigue analysis concepts including:
- What is the difference between strength and fatigue failure?
- How does predicting crack initiation differ from predicting crack propagation? (Durability predicts crack initiation).
- What is a duty cycle and how do you account for the damage associated with one?
- What are SN curves and where do they come from? How do you pick the best one for a particular application and how do you enter and use your own SN data?
- What are the various life criteria; what is the difference between stress life, strain life, Smith-Watson-Topper, ASME Boiler Code, and BS 5400 Weld Code, and which one do you use for a particular application?
- When should a duty cycle be considered low cycle and when high cycle? What are the implications of both?
- What is the Palmgren-Miner or Linear Damage Rule and how exactly is fatigue damage calculated from a stress or strain time history?
- What is Rainflow counting; how are stress cycles counted in a time history?
- Student Guide
- Workbook
N/A