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Analysis of load transfer in thermo–elastic membranes
Author(s) -
Hornig Jörg
Publication year - 2006
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.200610091
Subject(s) - thermoelastic damping , membrane , stiffness , materials science , natural rubber , structural engineering , thermal , flexural rigidity , transition state theory , shell (structure) , composite material , mechanics , computer science , engineering , physics , chemistry , thermodynamics , classical mechanics , kinetics , biochemistry , reaction rate constant
The flexural stiffness can be negligible in the analysis of extremely thin walled shell structures. Modeling these structures as membranes simplifies the theoretical formulation and reduces the computational effort. However, in case of compressive in–plane loads, the prediction of the load transition behavior by means of the membrane theory may be incorrect, if the wrinkling phenomenon is not taken into account. Therefore wrinkling algorithms were established in the past. Thermal strains influence the occurrence of wrinkling and the state of membrane forces. In order to analyze thermo‐mechanical effects in conjunction with membrane wrinkling, the Roddeman wrinkling theory was modified. For small strains the incorporation of thermal effects into the wrinkling algorithm is straight forward. A method for large strains was developed and elaborated for thermoelastic rubber–like materials. The wrinkling algorithm is easy to implement into existing FE‐programs. Results of numerical analysis are presented. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)