Document Detail

Stretching instability of helical springs.
MedLine Citation:
PMID:  12570548     Owner:  NLM     Status:  MEDLINE    
We show that when a gradually increasing tensile force is applied to the ends of a helical spring with sufficiently large ratios of radius to pitch and twist to bending rigidity, the end-to-end distance undergoes a sequence of discontinuous stretching transitions. Subsequent decrease of the force leads to steplike contraction, and hysteresis is observed. For finite helices, the number of these transitions increases with the number of helical turns but only one stretching and one contraction instability survive in the limit of an infinite helix. We calculate the critical line that separates the region of parameters in which the deformation is continuous from that in which stretching instabilities occur.
David A Kessler; Yitzhak Rabin
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2003-01-16
Journal Detail:
Title:  Physical review letters     Volume:  90     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2003 Jan 
Date Detail:
Created Date:  2003-02-06     Completed Date:  2003-03-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  024301     Citation Subset:  IM    
Department of Physics, Bar-Ilan University, Ramat-Gan, Israel.
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MeSH Terms
Cholesterol / chemistry
Chromatin / chemistry
DNA / chemistry
Models, Chemical
Models, Theoretical*
Reg. No./Substance:
0/Chromatin; 57-88-5/Cholesterol; 9007-49-2/DNA

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