| Typ | Book SoftCover |
|---|---|
| Language |
Englisch
|
| Editor | Forschungskuratorium Masachinenbau |
| Pages | 46 |
| EAN | 9783816307693 |
| Product No. | 9783816307693 |
Analytical strength assessment - sintered steel
The research on the strength assessment of sintered steel started in Germany in 1980 with a joint industry research project in which application-related design values for sintered steels have been derived . It was followed by other joint research projects that investigated
design aspects, process depending influences on the fatigue strength or the behavior under contact pressure. For selected alloys, the influence of notches or mean stresses was investigated. Even though a lot of investigations have been performed, a generalized assessment approach based on a larger data basis has not yet been not established. This might be reasoned by a lack of standardization of the powders resp. materials or the fact, that the creation of codes and guidelines is typically not public funded.
Table of contents
0 General
0.1 Scope
0.2 Technical background
0.3 Required assessments
0.4 Stresses and stress components
0.5 Material data
0.6 Safety factors 0.7 Calculation procedure
1 Assessment of static strength 1.1 General 1.2 Acting stresses
1.3 Material properties.
1.3.1 General
1.3.2 Estimation of material properties 1.4 Design parameters
1.5 Component strength
1.6 Safety factors
1.6.1 General
1.6.2 Load factor
1.6.3 Material factor
1.7 Assessment
1.7.1 General
1.7.2 Assessment
2 Assessment of fatigue strength 2.1 General
2.1.1 Characteristic values of stress
2.1.1.0 General
2.1.1.1 Stress components
2.1.1.2 Stress spectrum and S-N curve
2.1.1.2.1 Parameters of the stress spectrum
2.1.1.2.2 Parameters of the S-N curve
2.2 Material properties
2.2.0 General 2.2.1 Fully reversed reference fatigue strength
2.3 Design parameters
2.3.0 General 2.3.1 Design factors
2.3.1.1 Highly stressed volume
2.3.1.2 Surface treatment factors
2.4 Component strength
2.4.0 General 2.4.1 Component fatigue strength
2.4.2 Mean stress evaluation 2.4.2.0 General
2.4.2.1 Maximal amplitude assessment
2.4.2.2 Equivalent amplitude assessment 2.4.2.3 Mean stress sensitivity
2.4.2.4 Fatigue strength diagram
2.4.2.5 Mean stress factor
2.4.2.6 Single mean stress
2.4.3 Variable amplitude fatigue strength
2.4.3.0 General
2.4.3.1 Evaluation of damage equivalent stress
2.4.3.2 Limitation of maximal amplitude
2.4.3.3 S-N curve . 2.4.3.4 Calculation for constant amplitude stress
2.4.3.5 Calculation for variable amplitude stress
2.4.3.6 S-N curve for variable amplitude loading
2.5 Safety factors 2.5.0 General 2.5.1 Components
2.5.2 Total safety factor
2.6 Assessment
2.6.0 General 2.6.1 Degree of utilization
3 Examples 3.1 Strength assessment of a synchronizer hub
3.1.1 Description
3.1.2 Input data
3.1.3 Assessment of static strength
3.1.4 Assessment of cyclic strength
3.2 Strength assessment of a conrod 3.2.1 Input data
3.2.2 Assessment of static strength
3.2.3 Assessment of cyclic strength
4 Database 4.1 Analytically derived fatigue strength
4.2 Raw data for deriving Eq. 2.3.1.2
4.3 Database for Haigh-diagram