摘要:

The concept of a long-chain molecule acting as a spring in tension with the restoring force based on changes in entropy rather than energy has played a central role in the molecular theory of rubber elasticity since its inception over 50 years ago [1, 2], It is here reviewed and discussed from several different viewpoints based, in part, on insights gained from the computer simulation of atomistic models. Included are (a) kinetic interpretation of the force [3], (b) the role of excluded volume interactions in dense polymer systems [4], and (c) the extent of the utility of the entropic spring concept in nonequilib-rium situations [5].

ISSN:0149-5739    

DOI:10.1080/01495739208946140

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

摘要:

A method of analysis of the temperature and thermal stresses due to the laser pulses acting on a body is presented. Mathematical functions modeling the space and temporal behavior of laser pulses are proposed and then used in the analysis. In this first part of the investigation, the heat conduction equation is solved using the Green function and the separation of variables. Numerical results are presented for specific cases of aluminum and steel.

ISSN:0149-5739    

DOI:10.1080/01495739208946141

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

ISSN:0149-5739    

DOI:10.1080/01495739208946142

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor

ISSN:0149-5739    

DOI:10.1080/01495739208946129

出版商:Taylor & Francis Group    

年代:1992

数据来源: Taylor