Elastic waves in finitely deformed layered materials
by Pavel I. Galich, Nicholas X. Fang, Mary C. Boyce, and Stephan Rudykh
J. Mech. Phys. Solids, 91:390-410 (2017) http://dx.doi.org/10.1016/j.jmps.2016.10.002
research
Insert cohesive element between every two elements
Hello everyone
I am wondering how to insert the cohesive element between every two solid elements in Abaqus, such that each element can separate with others? Is there a tool can do this and generate Abaqus input file?
Thanks
Controlled elastic postbuckling of bilaterally constrained non-prismatic columns: application to enhanced quasi-static energy harvesters
Axially compressed bilaterally constrained columns, which can attain multiple snap-through buckling events in their elastic postbuckling response, can be used as energy concentrators and mechanical triggers to transform external quasi-static displacement input to local high-rate motions and excite vibration-based piezoelectric transducers for energy harvesting devices.
Post yield response of amorphous polymers under different stress states
In this contribution, an elasto-viscoplastic constitutive model based on the single mode EGP (Eindhoven Glassy Polymer) model is proposed to describe the deformation behaviour of solid polymers subjected to finite deformations under different stress states. The material properties of the original model are determined and calibrated from a uniaxial compression-loading test. Then, several numerical examples under different stress states are presented to illustrate the limitations.
The Anelastic Ericksen's Problem: Universal Eigenstrains and Deformations in Compressible Isotropic Elastic Solids
The elastic Ericksen's problem consists of finding deformations in isotropic hyperelastic solids that can be maintained for arbitrary strain-energy density functions. In the compressible case, Ericksen showed that only homogeneous deformations are possible. Here, we solve the anelastic version of the same problem, that is we determine both the deformations and the eigenstrains such that a solution to the anelastic problem exists for arbitrary strain-energy density functions. Anelasticity is described by finite eigenstrains.
Predicting origami-inspired programmable self-folding of hydrogel trilayers
Imitating origami principles in active or programmable materials opens the door for development
of origami-inspired self-folding structures for not only aesthetic but also functional purposes. A
variety of programmable materials enabled self-folding structures have been demonstrated across
various fields and scales. These folding structures have finite thickness and the mechanical
properties of the active materials dictate the folding process. Yet formalizing the use of origami
rules for use in computer modeling has been challenging, owing to the zero-thickness theory and
Formation path of delta hydrides in zirconium by multiphase field modeling
A multiphase field model is developed to study the effects of metastable ζ and γ hydrides on the nucleation and growth of the stable δ hydrides in α zirconium matrix. Acta Materialia 123 (2017) 235-244
A Better Alternative to RVE Analysis
RVE analysis is popular for computational homogenization. It can be used independently for virtual testing or as a module for multiscale modeling. Its popularity is mainly due to the maturity and acceptance of commercial finite element software. RVE analysis usually requires a 3D domain to obtain 3D properties and local fields. If a 2D RVE is used, only 2D properties and local fields are obtained. To obtain the complete set of properties, multiple analysis is needed. For example, to obtain the complete stiffness matrix, six 3D RVE analyses are needed.
Mohr Coulomb plasticity model
Hello everyone,
I am trying to implement a Mohr Coulomb plasticity model(no hardening at the moment) for the plane strain case. However, the results are not making so much sense.
I was wondering if any of you have tried to code this material model successfully before, or if you could provide me with some algorithm or reference which you know works properly.
Thank you.
Setareh
