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At one end of the tube, opposite to the impact area, a cylinder-like supplementary mass, made of the same material as the tube, was added.
References [1] Pawlus, W., Reza, H., Robbersmyr, K.G., Development of lumped-parameter mathematical models for a vehicle localized impact, Journal of Mechanical Science and Technology 25 (7) (2011), pp.1737-1747, (2011)
[3] Sunghak, L., & others, Effect of Troggering on the energy absorbtion capacity of axial compressed aluminium tubes, Materials and design, 20, pp 31-40, (1999)
[6] Dimas, D., Alves, A., Peixinho, N., Soares, D., Vilarinho, C., Configurable thermal induced triggers for crashworthiness application, Proceedings of conference SMART’ 09- Smart Structures and Materials, Porto, Portugal, (2009)
G. and Oldenburg, M., “Identification of lumped parameter automotive crash models for bumper system development”, International Journal of Crashworthiness, 14: 6, pp. 533 - 541, (2009)

Spring MRF Dampers Fig. 2 Vibration isolation device Table 1 shows the material parameters of the set, the spring material of Si-Cr Alloy, damper parameters of MRF, other parts of the material is a Medium carbon steel.
Acknowledgments The authors gratefully acknowledged the financial support of the Ministry of Science and Technology of the Republic of China under Grant No.
Lee, Experimental test of asymmetrical cable-stayed bridges using MR-damper for vibration control, Journal of Sound and Vibration, 2014, 78–85 [2] P.
Zhou et al., Semi-active control of three-dimensional vibrations of an inclined sag cable with magneto rheological dampers, Journal of Sound and Vibration 296 (2006) 1–22
Zhang, An adaptive beam model and dynamic characteristics of magnetorheological materials, Journal of Sound and Vibration 261(3) (2000) 465–481.

Raw materials & Design: The use of sustainable and environmentally friendly materials, such as bioplastics or recycled materials, to reduce the environmental impact of 3D printing.3D printing can also enable the creation of lightweight designs, which can reduce the amount of material used, and energy needed for transportation and logistics. 2.
The use of biodegradable materials or recycling technologies can help to reduce the amount of waste generated by 3D printing.
Gathering data: The next step is to gather data on the product's energy consumption, raw materials, transportation, and other inputs.
Two major factors that can make a dent in the carbon footprint significantly are : (a) Usage of Sustainable or Recycled materials – as the building and construction industry goes through 3 million tonnes of materials, any small increase in percentage terms has a large impact globally.
Jiang, “The potential of 3D printing in facilitating carbon neutrality,” Journal of Environmental Sciences, 130 (2023) 85–91.

A Simple Method of Coarse Aggregate Generation Based on PFC2d Yutian Kong1,a, Juan Wang1,b, Zongkun Li1,c and Lihong Zhang2,d 1 College of Water Conservancy and Environment Engineering, Zhengzhou University, Zhengzhou 450001, China 2State Key Laboratory of Hydro-science and Engineering, Tsinghua University, Beijing, China akongyutiansky@163.com, bwangjuan@zzu.edu.cn, clizongkun@zzu.edu.cn, dlh-zhang08@mails.thu.edu.cn Keywords: meso-mechanics; random aggregate model; circular aggregate; PFC2d; concrete.
International Journal of Solids and Structures, 5 (2011)
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However, the greatest clogging problems are caused by the presence of suspended materials, such as silt, algae, etc [3].
Filtration is defined as the separation of solid materials by using their physical properties and proper filtration that extracts clean water.
Acknowledgements This work was financially supported by the National Natural Science Foundation of China (50909062).
Journal of Irrigation and Drainage Engineering(ASCE), 112(4), (1986),p.293-304 [4] Gilbert R G; Ford H W.
Journal of Irrigation and Drainage, 29(1), (2010),p.78-82 [6] H.F.Liu,T.G.ZHeng,F.Liu,etc .

But from the view of manufacturing science, the fabrication conditions for fiber couplers have never been analyzed thermodynamically.
Fiberglass is a thermal rheological material, whose stress-strain is not only related with time, but also related with temperature, and obeys time-temperature equivalent principle.
Acknowledge The research is supported by the program of the national science foundation of China (50605063 and 50875267).
Wu and W.H.Cheng: Materials Chemistry and Physics, Vol.69(2001),p.199-203 [2] P.R.Chaudhuri, B.P.Pal: Proceedings of the SPIE - The International Society for Optical Engineering,Vol. 4417(2001), p.403-411 [3] S.H.
Horvath:Journal of the Optical Society of America A: Optics and Image Science, Vol.18(2001), p.696-703 [4] X.L.

Solar Energy Materials and Solar Cells, Vol. 65(2001), p. 79-85
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Materials Letters, Vol. 59 (2005), p. 289-292
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Considering that the anisotropic materials even if it’s stress free, there is still anisotropy of acoustics in it.
So analyzing the microstructure of materials can qualitatively explain the degree of material’s anisotropic.
Verifing the materials acoustic elasticity coefficient based on theory of H&K.
Evaluation of plastic damage for metallic materials under tensile load using nonlinear longitudinal waves [J].
Journal of Tongji University, 1995, 32(5): 553-557.

Aluminum is a non-ferrous metal material which has excellent comprehensive performance.
In the Al's grind processing, loose abrasive acting on the Al block mainly by rolling, specimen surface materials was removed by roll forming, specimen was ductile grinded by semi-fixed abrasive and surface was removed by plastic deformation.
Chen: Materials Protection, Vol. 32 (1999) No.4, pp.9-10
Dai: Chinese Journal of Mechanical Engineering, Vol. 43 (2007) No.1, pp.35-40
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Introduction Ion-exchange materials have long been used for isolation of chemicals [1-2,12], masking taste of bitter drugs[3], improve drug stability, delivery of anticancer drugs and chemosensitizers to multidrug resistant cells and solid tumors, controlled drug release for ocular[18][21], transdermal [6] [18] nasal[17] and primarily oral applications[16] in pharmacy and medicine.
Fibrous ion- exchange materials are suggested to have a larger surface area to unit volume ratio, which leads to a higher absorption rate and absorption capacity as compared with the resin.
Materials and Methods Materials.
Acknowledgement The authors greatly appreciate financial support from National Natural Science Foudation of China (No.81001414).
Journal 133:195–203