Plastic and Elastic Responses of a Jacket Platform Subjected to Ship Impacts

Table 10

Effect of topside mass on lag time.

Collision point	Platform A		Platform B
	Topside mass (3600 t)	Topside mass (0 t)	Topside mass (2400 t)
Mid-span	0.17 s	0.1 s	Mid-span	0.05 s
1/4 span	0.22 s	0.09 s
1/8 span	0.11 s	0.06 s	Lower end	0.05 s
Lower joint	0.06 s	0.05 s