~gabriel1984sibiu/agros2d/agros2d

<material:material xmlns:material="XMLMaterial" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="XMLMaterial /home/karban/Projects/agros2d/resources/xsd/material_xml.xsd">

<material:general description="" name="Nickel"/>

<material:properties>

<material:property nonlinearity_kind="function" independent_shortname="T" independent_unit="K" name="Thermal conductivity" shortname="&lambda;" source="C.Y. Ho, R.W. Powell and P.E. Liley, J. Phys. Chem. Ref. Data, v1, p279 (1972)" unit="W/m.K">

<material:constant value="91"/>

<material:nonlinearity>

<material:function body="def agros2d_material(t) :
	if t >= 0.0 and t < 18.0 :
		return 1.304208e-03*t*t*t*t*t -2.700268e-02*t*t*t*t -4.089829e-01*t*t*t +2.199849e+00*t*t +2.140436e+02*t
	elif t >= 18.0 and t < 30.0 :
		return 3.189215e-04*t*t*t*t*t -5.321568e-02*t*t*t*t +3.410781e+00*t*t*t -1.039216e+02*t*t +1.431939e+03*t -5.208712e+03
	elif t >= 30.0 and t < 90.0 :
		return 6.040699e-05*t*t*t*t -2.121476e-02*t*t*t +2.761625e+00*t*t -1.610480e+02*t +3.817001e+03
	elif t >= 90.0 and t < 223.0 :
		return 3.493035e-07*t*t*t*t -2.776075e-04*t*t*t +8.276592e-02*t*t -1.121132e+01*t +7.007063e+02
	elif t >= 223.0 and t < 630.0 :
		return 1.131921e-09*t*t*t*t -2.193597e-06*t*t*t +1.648640e-03*t*t -6.437058e-01*t +1.853755e+02
	elif t >= 630.0 and t <= 1500.0 :
		return 2.143115e-02*t +5.042098e+01
	else :
		return 1.000000e+100

" interval_from="0" interval_to="1500"/>

</material:nonlinearity>

</material:property>

<material:property nonlinearity_kind="function" independent_shortname="T" independent_unit="K" name="Specific heat" shortname="cp" source="B.J. McBride, S. Gordon and M.A. Reno, NASA Technical Paper 3287 (1993)" unit="J/kg.K">

<material:constant value="442"/>

<material:nonlinearity>

<material:function body="def agros2d_material(t) :
	if t >= 100.0 and t < 599.0 :
		return -1.187679e-08*t*t*t*t +2.223124e-05*t*t*t -1.467413e-02*t*t +4.504691e+00*t -9.038582e+01
	elif t >= 599.0 and t < 631.0 :
		return 1.809085e-04*t*t*t -2.972179e-01*t*t +1.629617e+02*t -2.926106e+04
	elif t >= 631.0 and t < 700.0 :
		return 1.341446e-02*t*t -2.008609e+01*t +8.011774e+03
	elif t >= 700.0 and t <= 1728.0 :
		return -5.186512e-08*t*t*t +2.399215e-04*t*t -2.122174e-01*t +5.725331e+02
	else :
		return 1.000000e+100

" interval_from="100" interval_to="1728"/>

</material:nonlinearity>

</material:property>

<material:property nonlinearity_kind="function" independent_shortname="T" independent_unit="K" name="Density" shortname="&rho;" source="F.C. Nix and D. MacNair, Physical Review, v60, p597 (1941) and P. Hidnert, J. Research National Bureau Standards, v58, p89 (1957); calculated from the linear expansion" unit="kg/m3">

<material:constant value="8901"/>

<material:nonlinearity>

<material:function body="def agros2d_material(t) :
	if t >= 81.0 and t <= 1173.0 :
		return -1.117427e-10*t*t*t*t +4.097446e-07*t*t*t -5.582955e-04*t*t -1.034728e-01*t +8.969428e+03
	else :
		return 1.000000e+100

" interval_from="81" interval_to="1173"/>

</material:nonlinearity>

</material:property>

</material:properties>

</material:material>