FKM Nonlinear Training Course

Forschungskuratorium Maschinenbau
/ Research Committee Mechanical Engineering

20 - 21 November 2024, online

Language: English

This online training course covers the new ”FKM-Guideline Nonlinear” for static and cyclic loading. Besides detailed assessment procedures, background on the individual topics will be given for better understanding about the procedures. The course is aimed at newcomers in the field, as well as experts interested in the concept of the FKM guidelines.

The FKM guideline is a standard developed by the Forschungskuratorium Maschinenbau (Research Committee for Mechanical Engineering) – FKM - for static and cyclic strength verification. Due to its broad applicability, the strength verification has become widely used in mechanical engineering and other industries.

Course Contents

Strength for monotonic loading – static strength

Evaluation Concept
Finite Element Analysis: FE-modeling and material
Safety factors
Assessment of static strength
Example

Cyclic strength

Overview and background information
Load history and cycle counting
Cyclic material behavior
- ultimate strength
- s-e and e-N curves
- Parameter estimation
Damage parameter P_RAM
Damage parameter P_RAJ
Notch stress/strain approximation (Neuber and Seeger/Beste)
Proof concept using P_RAM
Proof concept using P_RAJ

Course Agenda

Day 1

9:00-10:30

Introductory remarks
Strength for monotonic loading – static strength I
Evaluation Concept
Finite Element Analysis: FE-modeling and material

11:00-12:30

Strength for monotonic loading – static strength II
Safety factors
Assessment of static strength
Example

13:30-15:00

Cyclic strength I
Overview and background information
Load history and cycle counting

15:30-17.30

Cyclic strength II
Cyclic material behavior
- ultimate strength
- s-e and e-N curves and parameters
- Parameter estimation

Day 2

9:00-10:30

Cyclic strength III
Damage parameter P_SWT+Bergmann (P_RAM)
Damage parameter P_J (P_RAJ)

11:00-12:30

Cyclic strength IV
Notch stress/strain approximation (Neuber and Seeger/Beste)
Proof concept using P_RAM

13:30-15:00

Cyclic strength V
Proof concept using P_RAM cont.

15:30-17.30

Cyclic strength VI
Proof concept using P_RAJ

PSE

PSE Competencies addressed by this training course

FATco1	Discuss the initiation, propagation and fast fracture stages of Fatigue in metallic materials.
FATco2	Describe how the data used to construct an S-N curve are obtained.
FATco3	Discuss the term high cycle fatigue, highlighting a common source in your company products.
FATco4	Discuss the statistical nature of fatigue and explain how this is handled in relevant design standards and codes of practice.
FATco5	Discuss the salient features of an S-N diagram for steels and explain the terms endurance limit, infinite life and low cycle fatigue.
FATco7	Discuss the observed relationship between endurance limit and static tensile strength for steels and explain why this relationship does not hold for welded steels.
FATco10	Contrast the Stress-Life and Strain Life / Manson-Coffin approaches to fatigue assessment.
FATco11	Explain the use of Endurance Limit Modifying Factors in Stress-Life based fatigue assessment.
FATco12	Discuss how temperature, plate thickness and modulus effects are typically handled in relevant design standards and codes of practice and explain why this is necessary.
FATco14	Discuss the term Fatigue Strength Reduction Factor in relation to stress concentrations and explain how this has traditionally been handled in relevant design standards and codes of practice.
FATco15	Discuss the concept of cumulative damage and explain how this is commonly handled.
FATco16	Explain why a multiaxial stress field can complicate an analysis and discuss approaches to handling this.
FATco17	Discuss the significance of the choice of equivalent stress used in the fatigue assessment of welded joints
FATco29	Explain how a Cyclic Stress-Strain Curve is constructed and used.
FATco30	Explain Neuber's Rule and its limitations and why corrections to the elastic strain range from an elastic analysis may be necessary.
FATco36	Discuss any particular characteristic fatigue properties and behaviour for any materials being considered in analyses and assessment.
FATco37	Reflect on how variable amplitude load sequencing can affect the prediction of damage accumulation and fatigue life.
FATap2	Carry out elastic fatigue assessment using design standards and code guidelines for components and structures including any special procedures for ancillary components such as bolts,
FATap3	Modify the results of an elastic analysis for the effects of plasticity, where necessary.
FATap4	Conduct plastic analyses as necessary, to evaluate equivalent plastic strain ranges in components and assess using design standards and code guidelines.
FATap5	Use Reservoir Counting / Rainflow Method or similar to specify the necessary stress ranges, number of cycles and loading history for any component to be analysed.
FATap6	Employ a finite element analysis system for the fatigue analysis of a component or structure.
PLASev3	Assess the significance of neglecting any feature or detail in any nonlinear material idealisation.
PLASsy1	Specify the use of elastic perfectly plastic and bi-linear or multi-linear hardening constitutive data as appropriate.
PLASap2	Use FEA to determine Limit Loads for a range of components.
PLASap7	Using standard material data, derive a true stress vs true strain curve to be used for nonlinear analysis.
PLASco21	Explain the rationale behind the 5% strain limit in some codes of practice.
PLASco26	Discuss approaches employed to improve the finite element prediction of limit load.
PLASco33	Explain Neuber's Rule.

Details

Event Type	Training Course
Member Price	£1000.08 \| $1298.52 \| €1200.00
Non-member Price	£1291.77 \| $1677.26 \| €1550.00

Dates

Start Date	End Date	Location
20 Nov 2024	21 Nov 2024	Online, Online

Trainer

Prof. Dr.-Ing. Klemens Rother
University of Applied Sciences Munich, Germany

Engineering Degree in Mechanical Engineering / Doctoral thesis in analytical fatigue assessment of multiaxial, non-proportional stress states

Prof. Rother has over 20 years of industrial experience in responsible positions: design and qualification in transportation systems, pressure vessel design, consulting in computational engineering, software development and development and implementation of knowledge based systems.

Since 2008 Professor at Munich University of Applied Sciences
Since 2019 Founding member of the Institute of Material- and Building Research, IMB, Munich University of Applied Sciences
Teaching: Mechanics of Materials, Lightweight-Design, Fatigue&Fracture, Conceptual Desing of Mechanical Structures
Fields of Research: Structural Integrity, CAE, Conceptual Design and CAE in the Early Phase, Fatigue Analysis, Welded Structures
Head of Masters Program Computional Engineering, Munich University of Applied Sciences
Gründungsmitglied des Promotionszentrums für Integrales Bauen an der Hochschule München
Founding member of the Doctoral Research Center of Integrated Buildings (PZIB) at Munich University of Applied Sciences

More information:
Prof. Dr.-Ing. Klemens Rother (mwn.de)
https://orcid.org/0000-0002-9643-4967

Organisation

Duration
Day 1: 9:00 am - 5:30 pm
Day 2: 9:00 am - 5:30 pm
Login phase from 8:30 am.
Time zone: CET (Central European Time), UTC+1 (Berlin)

Language
English

Course Fee
Non NAFEMS members: 1.550 Euro / person*
NAFEMS member: 1.200 Euro / person*
Included in the fees are digital course notes in English language and a certificate.
* plus VAT if applicable.

NAFEMS membership fees (company)
A standard NAFEMS site membership costs 1,365 euros per year, an academic site and entry membership costs 855 euros per year.

Cancellation Policy
Up to 6 weeks before course starts: free of charge;
up to one week before: 75 %;
later and no show: 100 %.

Course cancellation
If not enough participants we keep the right to cancel the course one week before. The course can be canceled also in case of disease of the speakers or force majeure. In these cases the course fees will be returned.

Organisation / Contact
NAFEMS
e-mail: roger.oswald@nafems.org

Accreditation Policy

The course is agreed and under control of NAFEMS Education and Training Working Group (ETWG).

FKM Nonlinear

FKM Nonlinear Training Course

Forschungskuratorium Maschinenbau/ Research Committee Mechanical Engineering

C​ourse Contents

C​ourse Agenda