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As we know, bush-burning is one of the main forms of the engine failure or even damage due to the Inadequate supply or partial lack of oil between crankshaft main journal and crankshaft bearing as well as the rod journal and rod bearing in a high temperature and high speed working environment.
Using the default solver of FLUENT, and setting the operating pressure to a standard atmospheric pressure, without considering the acceleration of gravity, choosing engine oil from FLUENT material library as the fluid, setting the initial temperature to 25℃, taking the energy equation into consideration and based on SIMPLE algorithm, then conduct the flow field simulation.
Compared to the flow field of the clearance between rod journal and bearing shell, the effective flow cross-sectional area is enlarged because of the tank between the crankshaft main journal and bushing, so that the overall average oil flow velocity becomes larger, majority of the oil flows directly along the tank with little from the major arc.
Acknowledgements The authors gratefully acknowledge the financial support from the National Natural Science Foundation of the P.
[4] Yong Li, Zhiyou Liu and Yijie An: submitted to Journal of Hydrodynamics, 2001, 16(2): 254-258, in Chinese.

Study on Absorbing Properties of Honeycomb Absorbing Materials Hui-min SUN1,a, Zhao-zhan GU1,b and Ran-ran YANG1,c 1Nanjing University, College of Electronic Science and engineering, Nanjing 210093, China awhhyshm__1016@sina.com, btommygu@nju.edu.cn, cyangranrannju@gmail.com Keywords: honeycomb absorbing materials, electromagnetic parameters, dip-coating.
Honeycomb absorbing materials belong to structural absorbing materials.
Zeng, et al: Packaging Journal.2(2010),p.21-23 [4] D.
Berry, et al: Journal of Mechanical Engineering Science.221(2007),p.753-767 [5] L.
Liu: Journal of Aeronautical Materials.20(2000),p.187-191 [6] K.

Scheme of the nylon seal · Physical and mechanical properties of materials [7] are given in table 1: Table1.
Mechanical properties of materials Material Young’s modulus E, GPa Poison’s ratio ν Density ρ, kg/m3 σp, MPa σc, MPa PMMA 3.3 0.32 1190 82 125 Nylon 2.8 0.4 1150 — — Aluminum 70 0.33 4510 — — Loads and boundary conditions · The radius of the outer surface of the sphere R0=845mm; · The radius of the inner surface of the sphere Ri=737.5mm; · The angle of the upper hatch; · The angle of the bottom plate;; Internal working pressure P1 = 1 atm. (0.1 MPa); · External hydrostatic pressure P2 = 89.6 atm. (8.96 MPa - corresponds to a pressure of 900 m); · The interface conditionis met at the media contact boundary: σn1+σn2=0;u1=u2; · The material is considered in two cases as: o Linear material o Non-linear material.
The research was supported by the Russian Science Foundation (project no. 21-71-20020).
Zuev, On the design of deep-sea optical elements made of PMMA, IOP Conference Series: Materials Science and Engineering 734 (1) (2020) doi:10.1088/1757-899X/734/1/012069
Wei-Hao, A Uniform Viscoelastic-Plastic Constitutive Model for MD-PMMA at a Wide Temperature Range, Journal of Research Updates in Polymer Science. 4 (2015) 139-148

Structural bionics involves multi-disciplines, such as botany, plant physiology, soil science, optics, biophysics, biochemistry, physics, electronics, ergonomics, psychology, materials science, mechanics, dynamics, control theory, engineering, economics, color, aesthetics, communication, ethics and social science.
However, the human-made materials were quite different from the materials made by natural organisms.
Polymer materials from biomimetic materials are degradable and environment friendly.
Intelligent materials refer to the “live” materials that have the similar structures and functions with biological materials.
Chen, “New development in structural bionics”, Journal of Machine Design, Vol. 20, 2003, p.1-3

Paper [19] analyses the correlation dimension of the state of the gas environment during early ignition of materials.
Science and Transport Progress. 27 (2009) 143–148
Gornostal, Analysis of correlation dimensionality of the state of a gas medium at early ignition of materials.
Materials of Science Forum. 1068 (2022) 239–247
Materials of Science Forum. 1068 (2021) 361–373.

With the evolution of modern science and technology, composite material is widely used in more and more fields.
Trivedi, EMI shielding: methods and materials—a review.
Journal of Applied Polymer Science, Vol. 112 (2009), p. 2073-2086
Advanced Materials, Vol. 15 (2003), p. 1918-1921
Materials Science Forum, Vol. 936 (2018), 136-141

Science of Advanced Materials, 2 (1), pp. 51-57
Journal of Colloid and Interface Science doi: http://dx.doi.org/10.1016/j.jcis.2013.05.063
Advanced Materials, 19 (19), pp. 3016–3020
Journal of Sustainability Science and Management, 8 (2), p.244-253
Australian Journal of Basic and Applied Sciences, 9, p. 139

Review on Development and Application of Gelled Material Filling Mined-out Area Yong Liua, Jie Chenb Xi’an University of Science and Technology, Xi’an 710054,China aliuyong.love.com@qq.com, bchenjie363@163.com Keywords: Filling cementing materials, cement, High water quick-setting material, The fly ash, Blast furnace slag, Cementing filling material Abstract.
bTo broaden the sources of raw materials.
[7] Chuanqing Zhao, Hu Nailian.Filling the development and application of cementing materials [J].Journal of gold,2008(1):25-29
[13] Feng Juen,Guo Shengmao.The application of fly ash as filling cementing materials research [J].Journal of comprehensive utilization of fly ash,2001(5):10-11
Journal of liaoning university of engineering science, 2006,25(6):904-906.

Jiang: Journal of Materials Science & Engineering Vol. 25(2) (2007), p. 298 (in Chinese) [4] S.M.H.
Esche: Computational Materials Science Vol. 27(3) (2003), p. 259 [9] D.M.
Matsubara: Computational Materials Science Vol. 14(1-4) (1999), p. 125 [24] K.
Liu: Materials Science Forum Vol. 475~479(2005), p. 1287 [30] B.
Sun: Computational Materials Science Vol. 44(2) (2008), p. 707 [32] L.

The hazardous materials logistics accident has the characters of low probability and high hazard.
List[1] put forward an emergency model for the hazardous materials.
Conclusions Hazardous materials emergency scheduling is very important for the effective accident rescue.
Journal of Southeast University ( Philosophy and Social Science). 2009. 11(1): p. 67-70
Journal of Southeast University (Natural Science Edition). 2002: p. 510-513