... a coupled crystal plasticity and a phase field fracture model to estimate the deformation induced during a laser beam weld of 316H stainless steel. The displacement boundary condition was derived from a mechanical model of the weld, with the application of a Chaboche model. The temperature field required...

... columnar grains relative to the equiaxed grains of varying sizes in the surrounding parent material. This work aims to study the effect of microstructure heterogeneities on the mechanical response of weldment using a crystal plasticity framework. The grain size and texture dependence of local deformation...

.... To help increase the accuracy of predictions better material models can be used which take account of detailed features that are not completely considered, such as microstructure variation in fabricated component. Crystal plasticity (CPFE) is a technique that accounts for microstructure, so has...

... accounting for only macroscopic material behaviour and ignoring behaviour at a granular level. This has led to increased popularity in crystal plasticity finite element (CPFE) modelling due to its ability to simulate macroscopic and mesoscopic behaviour from a mechanistic perspective. A key factor...

... based crystal plasticity models in modelling the cyclic behaviour of steels, however the application of these is limited by their computational expense. In this study, the application of data-driven approaches for modelling the cyclic evolutionary behaviour is investigated. A synthetic cyclic dataset...

... Abstract In this work, we propose a framework to study the impact of texture (preferred grain orientations such as Goss, Brass, Copper, Cube, etc.) on the mechanical properties of materials using machine learning and micro-mechanics models. For micro-mechanics of materials, crystal plasticity...

... these standards the mesoscale should be taken into account. A commonly used method to simulate this lengthscale is crystal plasticity finite element (CPFE) which allows for efficient simulation of mesoscale phenomena. This paper presents and validates key components of a crystal plasticity model used to predict...

... affordable, are carried out and informed a meso-scale model of the material behaviour. The meso-scale simulation, that is a crystal plasticity finite element model, is informed by the variations within the material microstructure thus returning a representative material response. The model variation can...

... Abstract Cyclic high temperature deformation, which is a precursor to creep-fatigue damage is one of the main life limiting factors in thermal power plants. Microstructurally informed models such as crystal plasticity have shown great promise in predicting cyclic plasticity and creep...

... was used, which generated a geometric model based on input data gathered from EBSD analyses on the ferritic-bainitic reactor pressure vessel steel 22NiMoCr3-7. Mechanical properties were assigned to the constituents of the microstructure model by utilizing a phenomenological crystal plasticity model, which...

... of any micromechanical models’ formulation for creep and plastic deformation. The macroscopic stress relaxations measured from the experiment were compared with the prediction from a novel crystal plasticity based micromechanical model developed in our group. A good overall match was found between...

... of the present paper to provide an update of progress of work being carried out in the Mechanics Sub-project of PERFECT to predict the fracture behavior of RPVs in PWR and WWER systems. Keywords: Multi-scale Modeling, Irradiation Damage, Discrete Dislocation Dynamics, Crystal Plasticity, RPV Components...

... behaviour. Application of the micro-scale heterogeneity model is providing some new insights into the prediction of cleavage fracture probability. RPV steel brittle fracture Beremin model crystal plasticity finite element micro-scale heterogeneity A B co co cl d g si tr m co th ra (g fr o...

... of this heterogeneity is due to the elastic and plastic anisotropy of their constituent (often randomly orientated) grains. This paper will compare the predicted failure stresses from tensile tests performed on a ferritic pressure vessel steel using the crystal plasticity finite element approach alongside measured...

... resolved shear stress evolution. Computations of realistic 3D aggregates and classical homogenization are performed with a Finite Element code [1]. Each grain is described as a single crystal with a crystal plasticity law, which naturally introduces the irradiation effect on the slip systems activity...

... internals. It is the purpose of the present paper to provide an overview of work being carried out in the RPV Mechanics Sub-project of PERFECT to predict the fracture behavior of PWR, BWR and WWER systems. Multi-scale Modeling Irradiation Damage Discrete Dislocation Dynamics Crystal Plasticity RPV...