0] are the ambient gas density, area contraction coefficient and the outlet diameter of nozzle orifice.
They can be assumed to have the same area contraction coefficient [C.
The copper tubes have been deformed because of the anisotropy in the compressive stresses resulting from the higher thermal contraction coefficient
When rubber runs through the cooling system, it is being cooled and contracts with contraction coefficient [micro]<1.
i] the rubber contraction coefficient for the i-th transporter.
s) has the expression corresponding to Maxwell mechanical model, specifically for plastics, G is the transversal elasticity modulus, K is the compressibility modulus, v is the transversal Poisson contraction coefficient
and [eta] is the constant corresponding to Newtonian component of the Maxwell model.
The LE, linear expansion coefficient (LEC), LC, and linear contraction coefficient
(LCC) were calculated as follows:
The contraction coefficient
[phi] is defined as the ratio of area of contracted jet to the area of tangential port.
c] = contraction coefficient
, the ratio of the jet area at the vena contract a downstream of the bore to the area of the bore itself (dimensionless)
e]--outer radius of the ring; [mu]--transverse contraction coefficient
of the material, E --elasticity modulus of the material.
making a very precise scale model, which should take in consideration in its geometrical dimensions the contraction coefficient
of the cast part alloy.
5-2tf are more compact, the dimensional deviations are smaller, and as the shaping pressure in dies rises the contraction coefficient
decresses, also with the improvement of the parts quality.