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A new method of plastic limit analysis for beams and frames

Submitted by Jiang Ke on

The plastic limit of beams and frames have analyzed by using a new truss element model of solid bodies, compared with the plastic limit analysis method, it can be found that the limit load of the two methods are in good agreement.

Supplemental Videos:

(1) https://www.bilibili.com/video/BV1Yt4y1A7a1/?spm_id_from=333.999.0.0

(2) https://www.bilibili.com/video/BV1vg411U7Dv/?spm_id_from=333.999.0.0

Postdoc Position in Dynamic Fracture of Materials at Czech Technical University in Prague

Submitted by jirda on

 

Postdoctoral Research Assistant in Dynamic Fracture of Materials

 

We are seeking a highly talented and motivated researcher to work within our strong research group “Dynamics of material fracture” oriented at experimental and numerical investigation of mechanical response and failure of materials at high strain rates. This post is based in Prague, Czech Republic and is available for 2 years.

 

The detailed description how-to apply for the position and the application form can be found here:

Uncovering stress fields and defects distributions in graphene using deep neural networks

Submitted by Nuwan Dewapriya on

 

In our latest article, “Uncovering stress fields and defects distributions in graphene using deep neural networks”: https://doi.org/10.1007/s10704-023-00704-z , we showed that conditional generative adversarial networks (cGANs) could transform complex deformation fields into stress fields by eliminating the need to evaluate elasticity distributions and develop complex nonlinear constitutive relations.

Postdoctoral and PhD positions at Tsinghua Shenzhen International Graduate School

Submitted by xingshengsun on

Two postdoctoral researcher positions and one Ph.D. position are available in the Multiphase Fluid-Structure Interaction Lab in Tsinghua Shenzhen International Graduate School. The postdoc will assist the PI (Prof. Shunxiang Cao) in tasks associated with the high-performance simulations of multiphase fluid-structure interaction (FSI) problems, including bubbly flow modeling, development of efficient fluid-structure coupling algorithms, development of high-performance fluid-structure coupled solver, and reinforcement-learning-based control of FSI. 

Synergism effect between nanofibrillation and interface tuning on the stiffness-toughness balance of rubber-toughened polymer nanocomposites: a multiscale analysis

Submitted by Mahdi Zeidi on

In our recent study published in ACS Applied Materials & Interfaces, using a multiscale modeling technique, we investigated how the combination of nanofibrillation and interfacial tuning can have a synergistic effect on the stiffness-toughness balance in rubber-toughened nanocomposites. Check out the link below:

https://pubs.acs.org/doi/full/10.1021/acsami.3c04017

A Geometric Field Theory of Dislocation Mechanics

Submitted by arash_yavari on
In this paper a geometric field theory of dislocation dynamics and finite plasticity in single crystals is formulated. Starting from the multiplicative decomposition of the deformation gradient into elastic and plastic parts, we use Cartan's moving frames to describe the distorted lattice structure via differential 1-forms. In this theory the primary fields are the dislocation fields, defined as a collection of differential 2-forms. The defect content of the lattice structure is then determined by the superposition of the dislocation fields.

Atomistic-informed kinetic phase-field modeling of non-equilibrium crystal growth during rapid solidification

Submitted by mohsenzaeem on

I am happy to share with you our recent paper on kinetic phase-field modeling of non-equilibrium crystal growth, which is just published in Acta Materialia, it is open access:

S. Kavousi, V. Ankudinov, P. K. Galenko, M. Asle Zaeem. Atomistic-informed kinetic phase-field modeling of non-equilibrium crystal growth during rapid solidification. Acta Materialia 253 (2023) 118960 (11 pages).

https://www.sciencedirect.com/science/article/pii/S1359645423002914

Journal Club for May 2023: Strength Revisited: One of Three Basic Ingredients Needed for a Complete Macroscopic Theory of Fracture

Submitted by Oscar Lopez-Pamies on

1. Introduction

Because of its overwhelming pervasiveness and high-stakes impact on the mechanical performance of structures made of inorganic and live matter alike (bridges, airplanes, bones, ligaments,...), fracture has attracted the attention of humans, researchers and laymen the same, for centuries.

Optimal Elastostatic Cloaks

Submitted by arash_yavari on

An elastic cloak hides a hole (or an inhomogeneity) from elastic fields. In this paper, a formulation of the optimal design of elastic cloaks based on the adjoint state method, in which the balance of linear momentum is enforced as a constraint, is presented. The design parameters are the elastic moduli of the cloak, and the objective function is a measure of the distance between the solutions in the physical and in the virtual bodies. Both the elastic medium and the cloak are assumed to be made of isotropic linear elastic materials.