Novel Crashworthy Device for Pier Protection from Barge Impact

Table 4

Prespecified parameters for structure optimization.

Member	Parameter	Value
Barge	= barge mass	181.4 ton1723.7 ton
	= impact velocity	1.0 m/s5.0 m/s
Cap	= cap width	3.0 m
	= cap mass	100.0 ton
Steel beams	= number of planes of beam units	2
	= mass density of beam steel	8020.0 kg/m^3
	= elastic modulus of beam steel	200.0 GPa
	= tangent modulus of beam steel	1.5 GPa
	= yielding strength of beam steel	350.0 MPa
	= failure strain of beam steel	0.25
Design requirements	= lower bound of	1
	= upper bound of	10
	= lower bound of	0.2 m
	= upper bound of	1.0 m
	= lower bound of	1.0 m
	= upper bound of	5.0 m
	= maximum allowable force on pier	5.0 MN