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Zbigniew Siemiątkowski, Małgorzata Gzik-Szumiata, Tadeusz Szumiata, Mirosław Rucki and Robert Martynowski

. Herrmann, J., Rauert, T., Dalhoff, P., & Sander, M. (2016). Fatigue and fracture mechanical behaviour of a wind turbine rotor shaft made of cast iron and forged steel. Procedia Structural Integrity, 2, 2951-2958. DOI: 10.1016/j.prostr.2016.06.369. 5. Zhang, Z., Yin, Z., Han, T., & Tan, A. C. C. (2013). Fracture analysis of wind turbine main shaft. Eng. Fail. Anal., 34, 129-139. DOI: 10.1016/j.engfailanal.2013.07.014. 6. Harada, H., Mikami, T., Shibata, M., Sokai, D., Yamamoto, A., & Tsubakino, H. (2005). Microstructural changes and crack

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Tadeusz Szumiata, Marzena Rachwał, Tadeusz Magiera, Katarzyna Brzózka, Małgorzata Gzik-Szumiata, Michał Gawroński, Bogumił Górka and Joanna Kyzioł-Komosińska

steel metallurgy as the source of soil contamination by technogenic magnetic particles, heavy metals and polycyclic aromatic hydrocarbons. Chemosphere, 138, 863-873. DOI: 10.1016/j.chemosphere.2014.11.077. 4. Szuszkiewicz, M., Magiera, T., Kapička, A., Petrovský, E., Grison, H., & Gołuchowska, B. (2015). Magnetic characteristics of industrial dust from different sources of emission: A case study of Poland. J. Appl. Geophys., 116, 84-92. DOI: 10.1016/j.jappgeo.2015.02.027. 5. Heller, F., Strzyszcz, Z., & Magiera, T. (1998). Magnetic

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S.O. Pyskunov, Yu.V. Maksimyk and V.V. Valer

of Applied Mechanics and Technical Physics 56 2 282 292 10.1134/S0021894415020145 [16] Volkov I. A., Egunov V. V., Igumnov L. A., Kazakov D. A., Korotkikh Yu. G., Mitenkov F. M. (2015), Assessment of the service life of structural steels by using degradation models with allowance for fatigue and creep of the material, Journal of Applied Mechanics and Technical Physics 56 (6) 995-1006. 10.1134/S0021894415060097 Volkov I. A. Egunov V. V. Igumnov L. A. Kazakov D. A. Korotkikh Yu. G. Mitenkov F. M. 2015 Assessment of the service life of structural steels by using

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Yong Qin, Yuyan Luo, Jingru Lu, Lu Yin and Xinran Yu

. It is also China’s first resource development special zone and the vanadium and titanium capital of China. The reserves of titanium, vanadium, and graphite are ranked first in the world, third in the world, and third in China, respectively. It has become the largest production base of vanadium titanium products and vanadium titanium steel in China. The whole area is integrated into the experimental zone for the development and innovation of strategic resources in western Panzhihua and it is speeding up the construction of a world-class vanadium and titanium

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Chen Long, Xia Xintao, Zheng Haotian and Qiu Ming

parameters of the bearing are list as Tab.1 . The load of the bearing is set as 10N and the rotational speed is set as 100 RPM. The lubricant parameters involved in calculation is set as jet fuel No.3. Then friction torque is calculated as 0.0116 N·m and 0.0523 N·m, respectively. Obviously, the calculation results from different calculation models different with each other variously. Table 1 Structural parameters of the bearing. Parameter/Unit Value Parameter/Unit Value O.R ( D )/mm 45.225 I.R( d )/mm 16.053 Raceway diameter

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V.A. Bazhenov, O.S. Pogorelova and T.G. Postnikova

4 . Table 4 Material Steel Copper Aluminium Rubber Young’s modulus, N m -2 2.10 1.11 0.69 0.00008 Maximum F con ,N·10 5 1.71 1.33 1.10 0.0309 Let us note the interesting result: the rubber elasticity modulus is less at 26000 times than steel elasticity modulus. The contact force is less at 55 times and main body vibration amplitude is less only at 1.22 time! Contact Hertz’s theory supposes that contact surfaces are curvilinear "Hertzian" ones [ 36 ]. The local geometry of contact zone characterises by

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Piotr Bajurko and Przemysław Dobrzański

BIBLIOGRAPHY [1] Osmęda, A., 2012, „Strength and construction analysis of aerospace test structure - Internal report (Analiza wytrzymałościowo-konstrukcyjna demonstratora, Raport wewnętrzny),” 05/BU/2012/TEBUK, Institute of Aviation, Warsaw. [2] Osmęda, A., 2016, “Result comparison of numerical analysis and structural tests of aerospace test structure (Porównanie wyników analiz numerycznych i prób wytrzymałościowych demonstratora struktury lotniczej),” Transactions of the Institute of Aviation, Warsaw, No. 244(3). pp. 123-134. [3] Bajurko, P