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Article: Interaction of two cylinders immersed in a viscous fluid. On the effect of moderate Keulegan–Carpenter numbers on the fluid forces

Submitted by lagrangr on
research
Fluid Structure Interaction

This work deals with the hydrodynamic interaction of two parallel circular cylinders, with identical radii, immersed in a viscous fluid initially at rest. One cylinder is stationary while the other one is imposed a harmonic motion with a moderate amplitude of vibration. The direction of motion is parallel to the line joining the centers of the two cylinders. The two dimensional fluid–structure problem is numerically solved by the Arbitrary Lagrangian–Eulerian method implemented in the open-source CFD code TrioCFD.

Disrupting Density-Dependent Property Scaling in Hierarchically Architected Foams

Submitted by Ramathasan The… on
research
stiffness−density scaling
architected foams
vertically aligned carbon nanotube foams
structural hierarchy

Dear Colleagues,

I invite you to read our latest paper published in ACS Nano: https://pubs.acs.org/doi/10.1021/acsnano.3c01223

A new method of plastic limit analysis for rectangular plates

Submitted by Jiang Ke on
research

Based on a new element model of solid body, the plastic limit analysis of plate is carried out. The new element model is a truss composed of 24 bars. Taking the simply supported square plate and rectangular plate under uniform load as an example, by comparing the new element method with the classical plastic limit analysis theory, it can be found that the limit load and the distribution of plastic zone obtained by the two methods are in good agreement.

A new model for elasto-plastic analysis of steel

Submitted by Jiang Ke on
research

This is a beautiful, unparalleled elastoplastic model for plastic materials.

Based on the equivalent stress and deformation of regular hexahedron microelement and truss element, a new truss element model is presented. It can be used to solve the elasto-plastic plane stress problem and spatial problem of steel. Through a large number of examples, the new element model can be found to have good accuracy.

A new method of plastic limit analysis for beams and frames

Submitted by Jiang Ke on
research

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
research
#postdoc #impact #job #fracture #damage

 

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
research
neural networks
cracks
graphene
generative adversarial networks
molecular dynamics

 

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
research

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
research
#fracture
#Molecular_Dynamics
#Multiscale Modeling

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

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