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The results indicated that when the torque is M1=100N·m, the maximum stress on the engagement pairs is 177.584MPa; when the torque is and M2=300N·m, the maximum stress on the engagement pairs is 329.607MPa, which were less than the yield limit of planetary gear materials, but it can meet the design and operation requirements of planetary gear of megawatt wind turbines yawing reducer.
The structure of gear and its material properties are shown in Tab.1.
[3] YANG Sheng-hua Applications of Substructuring and Submodeling in Calculations of the Gear Stress and Deformation [A].Engineering and Computational Mechanics in Science[C].
T., Mathis R., "An evaluation of stresses and deflection of spur gear teeth under strain,"ASME Journal of Engineering for Industry, vol.96(1), pp.85-93,1974
[11] LI Yong-xiang,BI Xiao-qin,ZHANG Jun-sun., "Loaded Contact Analysis of a StraightTeeth Face Gear by ANSYS,"Mechanical Science and Technology for Aerospace Engineering,vol.28(7),pp.931-937,2009.

Two homogenization methods are presented for modeling the overall elasto-plastic behavior of composite materials, the first one is applied to the case where the nonlocal property of the constituents can be neglected, and the second one considers this nonlocal effect by idealizing the constituents as micropolar materials.
For example, the classical micromechanical method applies for the following length scale condition mlAlL >>>>>> [1,2], so that both the constituents and the homogenized materials can be idealized as Cauchy materials without any inner microstructures.
Journal of Engineering Mechanics-ASCE Vol. 128 (2002), p.808 [2] G.K.
Hori, Micromechanics: Overall Properties of Heterogeneous Materials (North-Holland: Elsevier, 1993)
Aifantis, J. of Engineering Materials and Technology Vol.124 (2002.), p.352

It is indicated that the geometrical nonlinear near the crack-tip should not be neglected for linear elastic materials.
For linear elastic medium, because of the high stress and strain near the crack-tip, the geometrical nonlinear near the crack-tip should not be neglected for linear elastic materials.
The low bound of maximum crack-tip stress is the elastic modulus of material in plane stress state; while in plain strain state, it is greater than the modulus of elastic, its value is relevant to Poisson's ratio and will increase with the Poisson's ratio.
The Science Press, Beijing, 2003
Ruina: International Journal of Fracture.

If the TAV is greater than 1, it indicates that the substance has an important contribution to the taste.TAV could make an evaluation directly, but did not consider the interaction between the various materials, such as synergistic effect.
Marine Science(1995),p.28-32.In Chinses
Food Science. 2011, Vol.32, No.13,p.297-301.In Chinses
Aquatic Science and Technology Information.
Chinese Journal of Food Hygiene.

Experiment Materials Two sets of round cross-section drawn high tenacity polyamide 6 fibers were obtained from melt spinning.
Zhu: Polymer Structure Analysis (Science Press, Beijing 2004), p. 542-544
[5] Nadka Avramova: Journal of Applied Polymer Science, Vol. 106, 122–129 (2007)
[8] NADARAJAH VASANTHAN: Journal of Polymer Science: Part B: Polymer Physics, Vol.41, 2870–2877
Yu: Textile Material (China Textile Press, Beijing 2006), p.144-149

The input parameters in models can be obtained from codes, material designs or laboratory tests in utilizing the selected life model for calculation.
Acknowledgements This work was supported by the National Natural Science Funds Major International Cooperation and Exchange Programs（50920105806）and Projects of Science and Technology Department, Zhejiang Province(2008C24003).
[3] Ditao Niu:Durability and life forecast of reinforced concrete structure ( Science Press,Beijing 2002)(in Chinese) [4] Weiliang Jin, Xiaoping Zhong:Journal of building structures.
Vol. 30 (2009), p.1 (in Chinese) [5] Yali Ma, Ailin Zhang:China Civil engineering journal.
Vol. 39 (2006), p.36 (in Chinese) [6] Odd.E.Gj ¢rv:Durability Design of Concrete Structures in Severe Environments (Taylor & Francis, Norway 2009) [7] Weiliang Jin, Yuxi Zhao:Durablity of Concrete Structures (Science Press, Beijing 2002) (in Chinese)

Udayashankar2b and Jagannath Nayak3c 1Department of Metallurgical & Materials Engineering, NITK, Surathkal-575025 India. 2 Department of Physics, NITK, Surathkal-575025 India. 3 Department of Metallurgical & Materials Engineering, NITK, Surathkal-575025 India.
Experimental details In the present work, 6061Al 15-volume percentage SiC composite material is under consideration.
Results and discussion In the following sections, the oxidation behavior of the composite material are discussed.
Lloyd: Composite Science and Technology Vol. 44 (1996), p. 1873 [5] R.R.
Ramesh: Journal of Alloys and Compounds 306 (2000) p. 270 [11] G.B.

In the light of different material composition, correlative control and harnessing measures are put forward, which can be referred in the control and harnessing of bank collapse in the reservoir area.
The slope wash material is transported and taken away.
The masonry material should be collected from fresh rocks with high resistibility of erosion and weathering.
Acknowledgements This work was supported by National Natural Science Foundation of China (41102187), opening fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology) (SKLGP2011K002) and Hubei Province Natural Science Foundation (Grant No. 2011CDB183) References [1] Luo,Q.M., 1983.
Journal of engineering geology, 14(2):172-175.

These occurred owing to severe ductile transition of the material.
Karthik, 2018 Influence of Process Parameters on the Machining Characteristics of Austensite Stainless Steel (AISI 304), Materials today proceedings. 5, 5, 2, (2018) 13321-13333, https://doi.org/10.1016/j.matpr.2018.02.324
Hans, The Effects of Alloy Composition and Surface Integrity on the Machinability of Austenitic Stainless Steels 304 and 304L, Journal of Manufacturing and Materials Processing. 8 (2024) 238. https://doi.org/10.3390/jmmp8060238
Saurav, 2021 Influence of cutting speed on dry machinability of AISI 304 stainless steel, Materials to day proceedings. 38, 5 (2021) 2174-2180, https://doi.org/10.1016/j.matpr.2020.05.554
Kalyan, Optimal Selection of Machining Parameters for Minimization of Elementary Energy Consumption during Machining of 304 Austenitic Stainless steel, Material Science Forum. 1133 (2024) 3-9, doi: 10.4028/p-Ywfq8W

ASM Handbook, Volume 13B: Corrosion: Materials; ASM International, (2005), 205–227
Journal of Material Science, 29, (1994), 5259–5271
Advanced engineering materials, 5 (12), (2003), pp. 866–878
Materials research innovations , 14 (2), (2010), 154–159
Materials research innovations, 14 (4), (2010), 342–347.