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Title: Computer-aided engineering and design of engineering rubber components : a study of elastomeric materials and their constitutive modelling for the finited element analysis of engineering components
Author: Allport, John Martin
Awarding Body: University of Bradford
Current Institution: University of Bradford
Date of Award: 1994
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Methods of describing hyperelastic material behaviour by constitutive equations have been investigated to determine the most appropriate modelling method to use for elastomeric components. The two main mathematical formulations, the phenomenological and statistical mechanics methods were compared by consideration of examples of each. The models studied were the Mooney-Rivlin and Ogden phenomenological models, along with the 8-Chain statistical mechanics model. The types of material to be modelled were characterised by a series of deformation tests. Tensile, compressive and both static and dynamic shear tests were used to determine material stress-strain characteristics, including variations due to temperature and strain rate (loading frequency in dynamic tests). Finite Element Analysis was used to model the tensile and compressive tests, applying the constitutive equations considered previously. The results were used to assess the applicability of each model to the task. It was concluded that although the Ogden model could give the greatest accuracy by using a large range of test data, the 8-Chain model provided the most accurate results from a minimum of testing. The 8-Chain method was then used to model a commercial application, a torsional drive coupling. The modelling results were compared with empirical results, showing a close correlation.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: TJ Mechanical engineering and machinery