Predictions of aneurysm formation in distensible tubes: Part A-Theoretical background to alternative approaches

► Governing equations derivation provided from first principles since no source available. ► Critical pressure sensitivity to strain-energy functions and data sets used are explored. ► Minimal measured data for critical pressure prediction is uniaxial and equi-biaxial. ► Strain-energy functions for aneurysm studies must satisfy Maxwell equal area condition. ► Straight and branched (aortic) tubes investigated demonstrate general applicability.