dynamic elongation
Recently Published Documents


TOTAL DOCUMENTS

9
(FIVE YEARS 0)

H-INDEX

3
(FIVE YEARS 0)

2019 ◽  
Vol 50 (8) ◽  
pp. 254-263
Author(s):  
Kongde He ◽  
Pengfei Zhou ◽  
Zifan Fang ◽  
Weihua Yang ◽  
Shaopeng Liu

The aim of this study is to determine the stochastic dynamic characteristics of the system due to the uncertainty of the gap contact between the mooring cable and the structural body of the submerged multi-body structure. The sag effect caused by the light, flexible, and low damping characteristics of the mooring cable and its dynamic elongation under the action of the flow field and the impact of the gap connection is considered. The sag effect is corrected using the equivalent elastic modulus method; the stochastic generalized non-deterministic dynamic model of the system considering the dynamic elongation and clearance contact of the mooring cable is established; and the Newmark-β method and the interval algorithm are used to solve the problem. The calculation results show that the mean and peak values of the kinematic parameters of the structure are larger than the ideal articulated state; the dynamic tension is changed randomly; and the deflection angle of the gap-contact state is greater than that of the articulated state, which may lead to the instability of the system. Therefore, when studying the concrete structure in water, we should consider the contact state of the joint and analyze its stochastic dynamic characteristics.


Open Physics ◽  
2019 ◽  
Vol 17 (1) ◽  
pp. 281-290
Author(s):  
Kongde He ◽  
Fadzi Ali ◽  
Borihan Md

AbstractAiming at the problem of systems’ dynamic characteristics’ randomness caused by connection gaps of submerged multi-body structures, a stochastic and uncertainty dynamical model were formulated for connection gaps and dynamic elongation of mooring cables. This model considered sag effect caused by light, soft and low damping characteristics of mooring cables and their dynamic elongation under the impact of flow field and connection gaps. The equivalent elastic modulus method was used to modify the sag effect. The Newmark-β method was used to solve the problem. Calculation results showed that the average value and peak value of floating body displacement caused by uncertainty of gap contact states are larger than those of ideal articulated states. The reliability of floating body’s displacement with gap contact will be reduced to different extents and the reliability of displacement in velocity direction changes greatly, especially perpendicular to flow field. When studying multi-body structures, randomness of contact state should be considered to reduce the dispersion of clearance and improve dynamic performance.


2015 ◽  
Vol 108 (5) ◽  
pp. 1220-1228 ◽  
Author(s):  
Cole D. Chapman ◽  
Stephanie Gorczyca ◽  
Rae M. Robertson-Anderson

2014 ◽  
Vol 556-562 ◽  
pp. 36-39
Author(s):  
Wei Lai Chen ◽  
Lin Yan Wan ◽  
Wei Hong Zhan

Elongation properties of car roof interior fabric were studied in this article.The FM02-11 type universal material testing machine was employed to test the static and dynamic elongation properties of warp knitted napped fabric 1,2,3,warp knitted fabric 1,2,pile composite fabric A1,A2,A3 and sponge composite fabric C1,C2,C3,C4. The results indicated all can meet the general standard for car interior ceiling fabric.According to the dynamic elongation, the bigger the deformation ratio, the better the formability.


1997 ◽  
Vol 6 (4) ◽  
pp. 286-289 ◽  
Author(s):  
K. Nibu ◽  
J. Cholewicki ◽  
M. M. Panjabi ◽  
L. B. Babat ◽  
J. N. Grauer ◽  
...  

1993 ◽  
Vol 11 (2) ◽  
pp. 190-198 ◽  
Author(s):  
Kazunori Yasuda ◽  
Ann R. Erickson ◽  
Bruce D. Beynnon ◽  
Robert J. Johnson ◽  
Malcolm H. Pope

1978 ◽  
Vol 18 (4) ◽  
pp. 522-526
Author(s):  
B. I. Abashkin ◽  
I. Kh. Zabirov ◽  
V. S. Lobanov ◽  
V. G. Rusin

Sign in / Sign up

Export Citation Format

Share Document