Structural Weight and Stiffness Optimization of a Midibus Using the Reinforcement and Response Surface Optimization (RSO) Method in Static Condition

Table 2

Mechanical property of conventional structural (CS) steel.

Material type	Density (kg/mm^3)	Yield strength (MPa)	Tensile strength (MPa)	Elongation (%)	Young’s modulus (GPa)	Poisson’s ratio,
CS steel	7850	260	360	30	210	0.3