Acta Mechanica

, Volume 165, Issue 1–2, pp 27–45 | Cite as

On energetics and conservations for strings in the presence of singular sources of momentum and energy



This paper discusses the dynamics of strings which are subject to the presence of singular sources of momentum and energy. Such sources arise naturally in many problems featuring axially moving strings and have been the subject of several recent works. The contribution of the present paper is to present new results pertaining to the time rate of change of energy and momenta, and to explore physically reasonable prescriptions for the singular sources. Because our work pertains to a one-dimensional deformable medium, it can also be easily adapted to rods.


Recent Work Time Rate Deformable Medium Singular Source Reasonable Prescription 


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The work of O’Reilly on this paper was supported by the National Science Foundation under Grant No. CMS0084808. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

Copyright information

© Springer-Verlag Wien 2003

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringUniversity of California at BerkeleyBerkeleyU.S.A
  2. 2.Engineering ConsultingBerkeleyU.S.A

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