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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.

A method of reducing volatile compounds in polypropylene packaging materials Dongli Li 1, a, Wencai Xu 1,b and Yabo Fu1,c 1 Beijing Key Lab. of Printing and Packaging Materials and Technology Beijing Institute of Graphic Communication, Beijing 102600, China a lidongli@bigc.edu.cn, b xuwencai@bigc.edu.cn, c fuyabo@bigc.edu.cn Keywords: packaging materials, nano-modification, printing ink, volatile compounds, food safety.
With many of the multilayer packaging materials adhesives are used to bind the layers together.
These organic solvents from adhesives and print inks can adsorbed by multilayer packaging materials and transfer from packaging materials to foodstuff.
The blended raw materials were melt mixing in twin-screw extruder at 160~220˚C.
De Candia: Journal of Applied Polymer Science Vol.57 (1995), P.533 [20] Kitty S.M.

Preparation of RHA-paraffin phase change materials Jun Wang1,2,a, Baoguo Ma1, Jianliang Zhang2,b, Wen Yang2 1 state Key Laboratory for Silicate Materials Science Engineering, Wuhan University of Technology, Wuhan, Hubei, 430070, China 2China Construction Ready-mixed Concrete Co.
Materials and Impregnation Porous Materials The RHA for experiment comes from Wuhan Kaidi Electric Power Co.
Al-Hallaj, A review on phase change energy storage: materials and applications, Energy Conversion and Management 2004, 45(9-10): 1597-1615
Journal of Materials Science and Engineering, 2003, 21(5): 647-650.
Mater Science, 1988, 23(12): 21–25

Intelligent materials based on the functional materials, there are two major categories.
Realize the using function product need science and technology to support.
This design acquired award of American popular science magazine.
For instance, self-adjusting, shape memory materials, photochromic materials, thermochromism materials, electrochromic material, etc.
Journal of mechanical engineering.

Nanotechnologies of Strength Control of Materials Victor V.
Tarasenko, Brittle strength conditions of isotropic materials, Journal of Mining Institute 36(3) (2018) 146-156
Kuten, Analysis of acoustic emission parameters changes with the growth of fatigue racks in steel samples, Materials Science Forum 970 (2019) 137–144
Manzhikov, Damage accumulation model for solids and the catastrophy prediction for large-scale objects, Journal of Mining Science 46(4) (2010) 384-393
Sultonov, M.Z Rustamova, Changes in structure of natural heterogenous materials under deformation, Journal of Mining Science 45(4) (2009) 355-358

The New GKSS Materials Science Beamlines at DESY: Recent Results and Future Options P.
Introduction In engineering materials science X-ray scattering and micro-tomography using synchrotron radiation have over approximately the last 10 years evolved as an increasingly accepted and utilized technique for characterizing the internal structure of materials.
The new high-energy beamline HARWI II is dedicated to texture, strain, and imaging measurements for materials science (Fig. 1).
Synchrotron radiation based micro computed tomography (SRµCT) is an established imaging method in the field of materials science.
Thus, GKSS is offering a suite of beamlines and corresponding experimental environments with a strong focus on the engineering materials science community.

Experimental Work Materials.
Firsov: Science Vol.306 (2004), p. 666-669 [3] K.
Hone: Science Vol.321 (2008), p. 385-388 [6] H.
Coleman: Journal of Materials Chemistry Vol.22 (2012), p. 12907-12914 [17] W.
Osman: Journal of Materials Science Vol.52 (2017), p. 5928-5937 [23] S.

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

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.

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.