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Predicting joint sealant performance of elastomers by computer simulation. III. Simulation of single‐ and multi‐step extension of a stress‐relaxing material
Author(s) -
Catsiff E. H.
Publication year - 1971
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1971.070150419
Subject(s) - extension (predicate logic) , sealant , seal (emblem) , joint (building) , stress (linguistics) , structural engineering , elastomer , computer science , deformation (meteorology) , relaxation (psychology) , materials science , engineering , composite material , art , visual arts , linguistics , philosophy , programming language , social psychology , psychology
Abstract Computer simulation of the extension of a joint seal that had fully relaxed in a compressed configuration indicated that exceptionally high stresses were engendered if the extension occurred in a single step, as provided in certain “performance tests.” When the same amount of extension was simulated by a stepwise procedure, with the assumption of full relaxation after each step, not only were the stresses smaller, but the stress concentration factors in the extreme corners of the joint seal were much reduced, so that the likelihood of failure under such conditions would appear to be remote. This stepwise extension pattern is considered to be more representative of real joint behavior than the “accelerated performance test.”