1 Introduction
2 Component geometry and mechanical characteristics
2.1 Geometry
Kiln length | 63 m |
Kiln internal diameter | 4.00 m |
Kiln external diameter | 4.15 m |
Angle inclination | 1.718° |
Rotation Frequency | 3 T/min |
Number of supports | 3 |
Weight of rotating cement | 136.96 T |
Total weight oven steel | 184.49 T |
Total weight of kiln bricks | 371.41 T |
Inner radius of the ring | 2132 mm |
3 Assessment of working conditions
3.1 Analytical evaluation
3.1.1 Mechanical and thermal study
Reaction forces (R1) at (X = 11 m) | 2.23*103 kN |
Reaction forces (R2) at (X = 38 m) | 4.84*103 kN |
Reaction forces (R3) at (X = 59 m) | 0.76*103 kN |
Torque (X = 15 m) | 670.23 kN m |
3.1.2 Fatigue study
- method Goodman [14]:$$ FS = {1 \mathord{\left/ {\vphantom {1 {\left( {\frac{{\sigma_{a}^{'} }}{{\sigma_{D}^{'} }} + \frac{{\sigma_{m}^{'} }}{{R_{m} }}} \right)}}} \right. \kern-0pt} {\left( {\frac{{\sigma_{a}^{'} }}{{\sigma_{D}^{'} }} + \frac{{\sigma_{m}^{'} }}{{R_{m} }}} \right)}} $$(9)$$ FS = 1.68 $$
- method Soderbergh [14]:$$ FS = {1 \mathord{\left/ {\vphantom {1 {\left( {\frac{{\sigma_{a}^{'} }}{{\sigma_{D}^{'} }} + \frac{{\sigma_{m}^{'} }}{{\text{R}_{e} }}} \right)}}} \right. \kern-0pt} {\left( {\frac{{\sigma_{a}^{'} }}{{\sigma_{D}^{'} }} + \frac{{\sigma_{m}^{'} }}{{\text{R}_{e} }}} \right)}} $$(10)$$ FS = 1.14 $$
- method gerber [14]:$$ FS = {1 \mathord{\left/ {\vphantom {1 {\left( {\frac{{\sigma_{a}^{'} }}{{\sigma_{D}^{'} }} + \left( {\frac{{\sigma_{m}^{'} }}{{\text{R}_{m} }}} \right)^{2} } \right)}}} \right. \kern-0pt} {\left( {\frac{{\sigma_{a}^{'} }}{{\sigma_{D}^{'} }} + \left( {\frac{{\sigma_{m}^{'} }}{{\text{R}_{m} }}} \right)^{2} } \right)}} $$(11)$$ FS = 2.28 $$