Optimization of 110 m Aperture Fully Steerable Radio Telescope Prestressed Back Frame Structure Based on a Genetic Algorithm

Table 5

Material properties.

Material properties	Steel	Aluminium
Elasticity modulus (N/m^2)	2.06 × 10^11	0.7 × 10^11
Poisson’s ratio	0.30	0.33
Density (kg/m^3)	7850	2700