Record Details


Field	Value

Title	Rupture of an extended object: A many-body Kramers calculation

Creator	SAIN, A DIAS, CL GRANT, M

Subject	lennard-jones chain statistical-theory breaking fracture polymer

Description	We show how an extended object's strain field is redistributed when the material ruptures under by thermal activation. Through analytical calculations and molecular dynamics simulations, we show that in a polymer chain the distribution is exponentially localized around the point of rupture. The length scale of localization is determined by the strain and microscopic parameters of the interaction potential. We also derive an analytic expression for the rate of bond rupture by consistently treating the collective modes of the chain and the effect of dissipation on those modes. Our theoretical estimates are of the same order of magnitude as those obtained by simulations, as compared to earlier theories which had overestimated the rate of rupture by approximately two orders of magnitude. It is also noteworthy that the correction comes about through the effective attempt frequency rather than the effective barrier height.

Publisher	AMERICAN PHYSICAL SOC

Date	2011-07-17T19:45:17Z 2011-12-26T12:50:28Z 2011-12-27T05:35:21Z 2011-07-17T19:45:17Z 2011-12-26T12:50:28Z 2011-12-27T05:35:21Z 2006

Type	Article

Identifier	PHYSICAL REVIEW E, 74(4), - 1539-3755 http://dx.doi.org/10.1103/PhysRevE.74.046111 http://dspace.library.iitb.ac.in/xmlui/handle/10054/4825 http://hdl.handle.net/10054/4825

Language	en

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