2. Uncertainties and inaccuracies in the data as discussed 

 in the Error Analysis Section. The resulting uncer- 

 tainties also are listed in the data tables in Appendix A. 



The effects of preload, flow and scope on the dynamic load response 

 ratios also are shown in Figures 11 through 21. The dependence en 

 frequency of the dynamic load response ratios on the weighted nylon 

 cord are little affected by preload, as illustrated in Figures 11 and 

 12. However, Figures 14 and 15 illustrate increases in this deoendence 

 for the response ratios with increasing preload on the open-link chain. 

 A similar effect is illustrated in Figures 18 and 19 for the bead chain. 

 However, Figure 17 illustrates increasing response ratios with no flow 

 and decreasing response ratios with flow on the mercury filled tube. 

 Figures 13, 16, 20, and 21, cases where portions of the line were lying 

 on- the bottom, could not be considered to illustrate the effects of 

 preload because in these cases preload could not be varied without changing 

 the scaope. The differences in effects of preload may be due to differ- 

 ences in the bending stiffness The open-link chain and bead chain are 

 extremely flexible in bending, whereas the weighted cord is slightly stiff 

 and the mercury filled polyethylene tube is stiffest. 



To determine the effects of current on the dependence on frequency 



load response ratios, care must be taken to look only at cases where 



equilibrium T /wJ. is nearly the same for flow and no flow conditions. 

 ox 



With this in mind, Figures 12. 14, 18 and 19 illustrate that the effect 

 of current is to increase the load response ratios for the weighted 

 cord, the open-link chain, and the bead chain. Similar preload condi- 

 tions were not obtained for the mercury-filled tube. As a result, no 

 interactions between the effects of stiffness and the effects of current 

 on the load response ratios were observed. 



Increasing scope tends to decrease the load ratios, especially 

 when some of the line is lying on the bottom. This is illustrated for 

 the weighted cord, the open-link chain, and the bead chain in Figures 11 

 through 16 and 18 through 21. Results for the tube are limited to a 

 single scope. 



33 



