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Dynamic interaction in cable-connected equipment.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Dynamic interaction in cable-connected equipment.
Author:	Hong, Kee-Jeung.
Description:	236 p.
Notes:	Co-Chairs: Armen Der Kiureghian; Jerome L. Sackman.
Notes:	Source: Dissertation Abstracts International, Volume: 64-09, Section: B, page: 4506.
Contained By:	Dissertation Abstracts International64-09B.
Subject:	Engineering, Civil.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3105242
ISBN:	0496528092

Dynamic interaction in cable-connected equipment.
Hong, Kee-Jeung.

Dynamic interaction in cable-connected equipment. [electronic resource] - 236 p.

Co-Chairs: Armen Der Kiureghian; Jerome L. Sackman.

Thesis (Ph.D.)--University of California, Berkeley, 2003.

A finite element model for the cable is developed by using the geometrically exact rod model and fitting the nonlinear moment-curvature-tension relationship of the cable with a bilinear elasto-plastic constitutive model. Kinematic hardening is assumed to represent the nonlinear bending behavior of the cable. Comparisons are made between predictions by the finite element model and tests conducted by other investigators under static and dynamic conditions.

ISBN: 0496528092Subjects--Topical Terms:

212394
Engineering, Civil.

Dynamic interaction in cable-connected equipment.
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245 1 0 $a Dynamic interaction in cable-connected equipment. $h [electronic resource]
300 $a 236 p.
500 $a Co-Chairs: Armen Der Kiureghian; Jerome L. Sackman.
500 $a Source: Dissertation Abstracts International, Volume: 64-09, Section: B, page: 4506.
502 $a Thesis (Ph.D.)--University of California, Berkeley, 2003.
520 # $a A finite element model for the cable is developed by using the geometrically exact rod model and fitting the nonlinear moment-curvature-tension relationship of the cable with a bilinear elasto-plastic constitutive model. Kinematic hardening is assumed to represent the nonlinear bending behavior of the cable. Comparisons are made between predictions by the finite element model and tests conducted by other investigators under static and dynamic conditions.
520 # $a A first-order differential condition for slippage of the wire is derived by noting that a wire can slip if the unbalanced tension force in a differential element of the wire, which is caused by bending, equals the maximum friction force on the wire that can be generated. The wire remains in a stick state if the unbalanced tension force is less than the maximum friction force that can be generated. In each cross section of the cable, two regions are identified: a region of stick and a region of slip. In the stick region, the continuity of axial strain in each wire along with the Bernoulli-Euler-Navier kinematic beam assumption is used to determine the axial force in the wire. In the slip region, the condition for the slippage of the wire is used to determine the axial force in the wire. The resultant moment of the cable is nonlinearly related to the curvature of the cable; this nonlinear relationship also depends on the axial strain (or axial force) in the cable. Accordingly, the secant bending stiffness of the cable varies between two extreme limits. These correspond to the extreme cases of fully slipping and fully stuck wires.
520 # $a Conductor cables used in electrical substations are typically made of helically wrapped aluminum wires. A theoretical model is developed to describe the nonlinear moment-curvature relationship of such cables by accounting for the friction and slippage between wires in neighboring layers.
520 # $a The finite element model developed is used to investigate the effect of dynamic interaction between two idealized equipment items connected by a conductor cable and subjected to ground motion. It is shown that the dynamic cable force can be significantly larger than the cable force under static equilibrium conditions. Furthermore, it is shown that the equipment response in the connected system can be strongly amplified relative to the response of the stand-alone equipment, particularly for the equipment item having the higher frequency. A simple predictive formula to estimate the amplification of equipment response due to the interaction effect is developed, and a practical design rule for selecting the cable slackness to limit the interaction effect in the cable-connected system is derived.
590 $a School code: 0028.
650 # 0 $a Engineering, Civil. $3 212394
710 0 # $a University of California, Berkeley. $3 212474
773 0 # $g 64-09B. $t Dissertation Abstracts International
790 $a 0028
790 1 0 $a Kiureghian, Armen Der, $e advisor
790 1 0 $a Sackman, Jerome L., $e advisor
791 $a Ph.D.
792 $a 2003
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