1/*! 2 * \file implicitnorton3.mtest 3 * \brief 4 * \author Helfer Thomas 5 * \brief 01/07/2014 6 */ 7 8@AccelerationAlgorithm 'AlternateSecant'; 9@MaximumNumberOfSubSteps 1; 10@ModellingHypothesis 'Axisymmetrical'; 11 12@Behaviour<umat> '@MFrontCastemBehavioursBuildPath@' 'umatimplicitnorton3'; 13@MaterialProperty<constant> 'YoungModulus' 150.e9; 14@MaterialProperty<constant> 'PoissonRatio' 0.3; 15 16@Real 'srr' 20.e6; 17@ImposedStress 'SRR' 'srr'; 18// Initial value of the elastic strain 19@Real 'EELRR0' 0.00013333333333333333; 20@Real 'EELZZ0' -0.00004; 21@InternalStateVariable 'ElasticStrain' {'EELRR0','EELZZ0','EELZZ0',0.}; 22// Initial value of the total strain 23@Strain {'EELRR0','EELZZ0','EELZZ0',0.}; 24// Initial value of the stresses 25@Stress {'srr',0.,0.,0.}; 26 27@ExternalStateVariable 'Temperature' 293.15; 28 29@Times {0.,360 in 20}; 30 31@Real 'A' 8.e-67; 32@Real 'E' 8.2; 33 34// tests on strains 35// note: EquivalentViscoplasticStrain is known at 1.e-12 (defaut value 36// for @StrainEpsilon), thus we may expect the strain to be known at 37// '3.6*1.e-9'. If pratice, things are a bit better but not much 38// better. 39@Test<function> 'ERR' 'EELRR0+A*SRR**E*t' 1.e-9; 40@Test<function> 'EZZ' 'EELZZ0-0.5*A*SRR**E*t' 1.e-10; 41@Test<function> 'ETT' 'EELZZ0-0.5*A*SRR**E*t' 1.e-10; 42@Test<function> 'ERZ' '0.' 1.e-10; 43// tests on internal state variables 44@Test<function> 'ElasticStrainRR' 'EELRR0' 1.e-12; 45@Test<function> 'ElasticStrainZZ' 'EELZZ0' 1.e-12; 46@Test<function> 'ElasticStrainTT' 'EELZZ0' 1.e-12; 47@Test<function> 'ElasticStrainRZ' '0.' 1.e-12; 48@Test<function> 'EquivalentViscoplasticStrain' 'A*SRR**E*t' 1.e-12; 49// this test is a bit paranoiac since SRR is imposed 50@Test<function> 'SRR' 'SRR' 1.e-3; 51// check that the mechanical equilibrium is satisfied 52@Test<function> 'SZZ' '0.' 1.e-3; 53@Test<function> 'STT' '0.' 1.e-3; 54@Test<function> 'SRZ' '0.' 1.e-3; 55