Zobrazeno 1 - 10
of 165
pro vyhledávání: '"Dawson, Paul R."'
Autor:
Dawson, Paul R., Miller, Matthew P.
To assist in the planning of in situ loading, HEDM experiments by generating synthetic diffraction images of virtual samples in loaded and unloaded states. The user designates a target grain in the virtual sample and specifies the set of reflections
Externí odkaz:
http://arxiv.org/abs/2303.17702
Autor:
Dawson, Paul R., Miller, Matthew. P.
The application of harmonic expansions to estimate intra-grain stress distributions from grain-averaged stress data is presented that extends the capabilities of the open source code, MechMonics. The method is based on using an optimization algorithm
Externí odkaz:
http://arxiv.org/abs/2106.15769
Autor:
Dawson, Paul R., Miller, Matthew P.
A methodology for computing expansion basis functions using discrete harmonic modes is presented. The discrete harmonic modes are determined grain-by-grain for virtual polycrystals for which finite element meshes are available. The expansion weights
Externí odkaz:
http://arxiv.org/abs/2103.05483
Autor:
Poshadel, Andrew C., Dawson, Paul R.
Using a correlation between local yielding and a multiaxial strength-to-stiffness parameter, the continuum-scale yield surface for a polyphase, polycrystalline solid is predicted. The predicted surface explicitly accounts for microstructure through t
Externí odkaz:
http://arxiv.org/abs/1711.10631
A systematic study of the sensitivities of simulation input on the computed stress distributions in two-phase microstructures is presented. The study supports a related investigation of the initiation and propagation of yielding in duplex stainless s
Externí odkaz:
http://arxiv.org/abs/1707.08962
The elastoplastic behavior of a two-phase stainless steel alloy is explored at the crystal scale for five levels of stress biaxiality. The crystal lattice (elastic) strains were measured with neutron diffraction using tubular samples subjected to dif
Externí odkaz:
http://arxiv.org/abs/1707.06857
Autor:
Poshadel, Andrew C., Dawson, Paul R.
The ratio of directional strength-to-stiffness is important in governing the relative order in which individual crystals within a polycrystalline aggregate will yield as the aggregate is loaded. In this paper, a strength-to-stiffness parameter is for
Externí odkaz:
http://arxiv.org/abs/1705.08053
Autor:
Dawson, Paul R., Boyce, Donald E.
FEpX is a modeling framework for computing the elastoplastic deformations of polycrystalline solids. Using the framework, one can simulate the mechanical behavior of aggregates of crystals, referred to as virtual polycrystals, over large strain defor
Externí odkaz:
http://arxiv.org/abs/1504.03296
Autor:
Dawson, Paul R., Boyce, Donald E.
A methodology is presented for estimating average values for the temperature and the frictional traction over a tool-workpiece interface using measured values of force and torque applied to the tool. The approach was developed specifically for fricti
Externí odkaz:
http://arxiv.org/abs/1403.7822
Publikováno v:
In Acta Materialia 1 February 2018 144:92-106
