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The application of the finite element in analyzing the bubble in the ship wake ZHANG Qun ,WANG Yingmin School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an China School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an China beautyzqc@163.com, ywang@nwpu.edu.cn Keywords: finite element method, bubble in the ship wake, point displacement, pressure distribution Abstract: The finite element method was used to analyze the bubble in the ship wake.
The single bubble model in the ship wake was created and studied after the material property parameters of the bubble were got by the finite element computation.
Three different radiuses of bubbles in the ship wake were analyzed, and the parameters of the bubble materials were gained by ANSYS as the table-1 shows.
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Ruban, Investigation of the properties of powder materials using computer modeling, Materials Science Forum 1038 (2021) 33-39
Journal of Achievements in Materials and Manufacturing Engineering. 91 (2018) 27–33
Morkovska, Investigation of the main stages in modeling spherical particles of inhomogeneous materials, Materials Science Forum 1068 (2022) 207-214
Romin, Software modeling environment for solving problems of structurally inhomogeneous materials, Materials Science Forum 1068 (2022) 215-222
Bezuhla, Improvement of fire resistance of polymeric materials at their filling with aluminosilicates, Materials Science Forum 1006 (2020) 55-61

Microstructure and Mechanical Properties of 22MnB5 Hot Stamping Part Peng Zhang1, a, Gang Wang1, b, Chuncheng Pan1, c, Xiaoqi Ren2, d School of Materials Science and Engineering, Harbin Institute of Technology, Weihai 264209, China Jintai group corporation, Dongying 257335, China apzhang@yeah.net, bwg@hitwh.edu.cn, c545731137@qq.com, drcxing2012@163.com Keywords: 22MnB5, hot stamping part, microstructure, mechanical property Abstract.
There are many researches which describe the effect of main process parameter to the hot stamped materials [4-6], but fewer studies were focused on the distribution of mechanical and microstructure in the stamping part.
Journal of Materials processing Technology, 2010, 210:2103-2118 [2] Application of Hot Forming High Strength Steel Parts on Car Body in Side Impact.
Application of hot press forming process to manufacture an automotive part and its finite element analysis considering phase transformation plasticity, International Journal of Mechanical Sciences, 2009, 51: 888-898 [8] LIU Wei, LIU Hongsheng, XING Zhong-wen.
Materials Science and Engineering A, 2012, 540:24-29

Introduction Civil structures are continuously degraded due to unexpected loading, environmental changes and natural degradation of materials among other factors.
However, the material properties of the PSC bridge girder could not be evaluated on the site.
It can be assumed that the support stiffness is higher than that of the general material.
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As for that, natural materials, waste materials from industry or domestic uses and agricultural and biosorbent can be obtained and employed as inexpensive adsorbents.
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Fig. 1: Poisson’s ratio η is defined as the ratio of contraction to extension and expresses the elastic deformation of a material [7] The value of the Poisson’s ratio is usually 0 - 0.5 (the value may also be negative for some “auxetic” materials [7]).
The determination of the PR value of cementitious materials can be carried out by for example the resonance method [8], but only in the case of hardened composites after reaching the demoulding compressive strength.
Its value will gradually decrease to a value close to 0.2, which is given for hardened cementitious materials.
Hela, Selected Technological Factors Influencing the Modulus of Elasticity of Concrete, International Journal. of Civil and Environmental.
Lakes, Negative-Poisson's-Ratio Materials: Auxetic Solids, Annual Review of Materials Research. 47 (2017) 63 - 81 [8] ČSN 73 1372.

Titanium has a strong chemical reactivity with most tool materials.
And in the cutting of difficult-to-cut materials, water vapor can also act as coolant and lubricant [1].
Experiment Equipments and Materials.
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Chinese journal of energetic materials.
Journal of inorganic materials.
Journal of Magnetism and Magnetic Materials.
Functional Materials.
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The composition of each elements are Fe = 1.02 %, Si = 4.08 %, Ti = 19.44 %, O = 73.43 %, and Cu = 2.03 %, it shows that oxygen elements have the highest percentage because all of the syntesized material are oxide materials, and surface of material dominance by the TiO2 materials.
SEM-EDX spectrum of Fe3O4/SiO2/TiO2-Cu Fig. 5 depicts the ultraviolet and visible absorption spectra of synthesized materials in various Cu concentration.
Raanaeiba, The removal of mercury ion pollution by using Fe3O4-nanocellulose: Synthesis, characterizations, and DFT studies, Journal of Hazardous Materials 344 (2018) pp.258–273
Park, Facile synthesis of Cu@TiO2core shellnanowires for efficient photocatalysis, Materials Letters 176 (2016) pp. 265–269
S.Kunarti, “Synthesis of Fe3O4/TiO2-Co nanocomposite as model of photocatalyst with magnetic properties,” Materials Science Forum901 (2017) pp.14-19

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