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The elastic-plastic constitutive relationship and the Drucker-prager yielding criterion are used to simulate the behaviour of non-linear geo- materials.
Introduction The certain methods of abutment pressure obtains the measurements of the doformation of tunnel, the measurements of load of hydraulic support[1], similar materials simulation[2], numerical simulation[3-4], elasitc simiplied calculation[5], et al.
Fig. 1 Finite element model used for numerical computations The choice of yield criterion The Drucker-Prager yielding criterion is used to simulate the behaviour of non-linear geo- materials.
The expression of yield criterion can be written as (1) The yielding surface is a hexagonal circumscribed cone of Mohr-coulomb yielding surface when the parameters of materials ， is given, as shown in Fig. 2.
Journal of Liaoning Technical University(Natural Science), Vol. 27(2008), April, p. 184-187

Carney III: International Journal of Mechanical Sciences Vol. 25(9-10) (1983), p. 649 [3] A.R.
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Reddy: International Journal of Mechanical Sciences Vol. 19 (1977), p. 423 [6] L.D.
Sakurai: International Journal of Mechanical Sciences Vol. 10 (1968), p. 343 [13] R.M.

Improving conductivity of phase change materials.
Fig.6 Encapsulation of phase change materials (4) Composite phase change material is to make different phase change materials combined together by means of composite material technique, in order to overcome the shortage of lower thermal conductivity and storage volume etc of a single phase change material.
International Journal of Heat and Mass Transfer.
Vol.32(2007), p.2201 [11] H.Chen, D.S.Zhu, X.L.Qi, et al: Materials Review (in Chinese).
Vol.74( 2003), p.141 [21] X.Q.Zhu, J.Hu, Y.F.Yang, et al: Advanced Materials Research.

Vierrege: Material Science and Engineering A, Vol. 280 (2000). p. 37-49
Vasudevan: Materials Science and Engineering A, Vol. 281 (2000), p. 292-304
Cochrane: Materials Science and Technology Vol. 18 (2002), p. 1445-1452
Starink: : Materials Science and Technology Vol. 17, (2001), p. 1324-1328
Ferguson: Materials Science and Engineering Vol. 74 (1985), p. 133-138

One interesting semiconductor materials for thermoelectric materials are investigated as ZnO material because it can be p-type or n-type depending on the material impurities (dopants).
Material Science, 2012. 32: p. 347-355
[11] Fergus, J.W., Oxide materials for high-temperature thermoelectric energy conversion.
Journal of Materials Science Research, 2015. 4(3): p. 40
Materials Science in Semiconductor Processing, 2014. 27: p. 19-25

Singh et al. [44] As opposed to fluids made of hydrocarbons and synthetic materials.
Y., Recent advancement in electric discharge machining of metal matrix composite materials. 
Materials 2021, 14(1), 23 [43] W.
Materials today Proceeding.4 2058-2067
Mukherjee; Uses of Various Dielectrics in Electro Discharge Machining (EDM) – A Critical Review; International Journal of Innovative Science and Research Technology;2023,6(4)

Comparison of results between the different materials plates.
Biomedical applications of polymer-composite materials.
Journal of Biomechanics, 3229-3235
Journal Biomech Engineering, 273-280
Composites Science Technology, 55-65

Adsorbent Materials.
Machida, Journal of Hazardous Materials, vol. 180 (2010), p. 552-560 [6] J.
Alvarez, Journal of Hazardous Materials, vol. 161(2009), p. 670-676 [7] M.
Liang, Journal of Hazardous Materials, vol. 164 (2009), p. 1286 [9] K.
Prasad, Journal of Hazardous Materials, vol. 137 (2006), p. 1211 [11] T.

Waste tire powder (WTP) was reclaimed mechanically in presence of a new composite additive which consists of reinforcing materials (RM) and toughening materials (TM), and the effects of technical parameters and additives were investigated.
Experimental Materials.
Journal of Applied Polymer Science 73 (14), 2951–2958
Journal of Applied Polymer Science 75 (12), 1493–1502
European Polymer Journal 42 (4), 917–927

Materials Science Forum, 1006 (2020) 166–172
Determination of the Fire-Retardant Efficiency of Magnesite Thermal Insulating Materials to Protect Metal Structures from Fire, In Materials Science Forum, 1038 (2021) p. 524-530
Materials Science Forum. 1038 (2021) 9–14
Materials Science Forum, 1006 (2020) 70-75
Materials Science Forum. 1006 (2020) 117–122