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abaqus cfd/structure co-simulation

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not able to edit ABAQUS/CFD 6.10 input file

the keyword for an abaqus/cfd model cannot be edited

???? any suggestion???

WHILE I AM PERFORMING CO-SIMULATION

Yonggang Huang's picture

JAM now publishes a new type of paper: A Perspective

JAM now publishes a new type of paper -- A Perspective.  As invited by the Editor of JAM, the authors write a short (2~3 published pages) perspective paper on an emerging field, or an important new discovery, in mechanics.  The inaugural perspective paper, "Toughening Graphene With Topological Defects: A Perspective" by Dr. Teng Zhang and Prof. Huajian Gao from Brown University, was published in the May issue, 2015.  The PDF of the paper is attached. 

Postdoc/PhD Position available 05/15/2015

We are currently accepting candidates for 1 Ph.D. and 1 Postdoc position in the Mechanical Engineering Department at the State University of New York, Stony Brook, working on the smart materials with application to sensing, energy harvesting and control.

 

Individuals with very good knowledge in the following area(s) are invited to respond.

o                     Structural Dynamics

PhD position in hierarchical composite materials

The University of Applied Sciences and Arts Northwestern Switzerland (FHNW) includes nine schools with more than 10'000 students. In a joint program with the Swiss Nanoscience Institute at Uni Basel and the Paul Scherrer Institute, we are looking for you to join the FHNW School of Engineering, Institute of Polymer Engineering, in Windisch, Switzerland, at the earliest possible date:

PhD position in hierarchical composite materials

karelmatous's picture

Extreme Particle Shape Effect for Packs of Platonic Solids

For centuries, great minds like Kepler, Maxwell and Einstein have investigated the statistical characterization of many-body systems, and implications of small-scale structures on the macroscopic transport and mechanical properties. In this work, an accurate statistical description of heterogeneous particulate materials is computed using novel adaptive interpolation/integration scheme. This statistical information is then utilized within mathematical theories for predicting the overall thermo-mechanical behavior.

Cellular Automata for Multi-scale Fracture

Could cellular automata be used to model mechanisms (for quasi-brittle fracture) that occur at the meso-scale and then feed these mechanisms to a macro-scale finite element model? Is it possible to replace constitutive models with mechanistic models, simulating mechanisms that lead to fracture instead of formulating equations that predict failure? These are typical questions that have motivated my recent collaboration with Dr Anton Shterenlikht at the University of Bristol.

application for a post doc

Dear imechanica members, My name is Ahmed El Moumen and I am posting this blog in searching for postdoctoral positions in Computational Solid Mechanics and heterogeneous materials modelling. I obtained Ph.D. in Computational Mechanics at Lille 1 university/mechanics laboratory of Lille.

zichen's picture

Residual Stresses and Poisson’s Effect Drive Shape Formation and Transition of Helical Structures

Strained multilayer structures are extensively investigated because of their applications in microelectromechanical/nano-elecromechanical systems. Here we employ a finite element method (FEM) to study the bending and twisting of multilayer structures subjected to misfit strains or residual stresses. This method is first validated by comparing the simulation results with analytic predictions for the bending radius of a bilayer strip with given misfit strains.

CutExtrude error Abaqus

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Hi all, 

I'm trying to create a full-scale truss for a static loading simulation using Abaqus.
I wanted to use a Python script to do this, but I am not very experienced with this language or the Abaqus methods.

The members forming the truss are cee sections. However, at the ends of the cee sections I want to create an extruded cut

Getting elastic constants using LAMMPS .

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Hello everyone , 

LAMMPS suggests a script to calculate C44 , C11 & C12 .The question is : How to calculate the others for a nanomaterial ? Thanks in advance ! 

zappalorto's picture

Summer School on Fatigue and Damage Mechanics of Composite Materials

Dear Colleagues,

we are glad to present the Summer School on Fatigue and Damage Mechanics of Composite Materials (13 . 17 July 2015) and the Short Course on Experimental Techniques and Testing of Composite Materials (9 . 10 July 2015) organized by and to be held at The Department of Management and Engineering  - University of Padova in Vicenza - Italy.

martin.levesque's picture

Post-doctoral position in Montréal on crystal plasticity in collaboration with the aerospace industry

Hi

I am looking for a 12-15 months post-doctoral fellow to work on crystal plasticity finite element simulation of impacts. This project is parts of a larger collaborative project with Pratt and Whitney, Bell Helicopter, L3 and Héroux Devtek aiming at understanding the effects of shot peening on fatigue life. The project involves 3 other post-doctoral fellows and 4 PhD students.

The starting date is flexible and could be as soon as now, depending on the candidates expertise.

The interested candidates are invited to send me their CV and publication lists.

sound propagation simulation in abaqus challenge

Dear friends,

           I am simulating sound propagation in mild steel.

frequency=5MHz mesh size=0.5mm

time incriment of wave amplitude=1e-9

instead of giving force at a node i have given boundry displacement

U1=5.8e-10

U2=-8e-10

instead of showing sound propagation, my entire specimen(mild steel with 15 mm thickness) deflecting like a wave.I would like to know 1)what is the reason for that deflection?

2)what may be the possible solution?

Asymmetric flexural behavior from bamboo’s functionally graded hierarchical structure: Underlying mechanisms

As one of the most renewable resources on Earth, bamboo has recently attracted increasing interest for its promising applications in sustainable structural purposes. Its superior mechanical properties arising from the unique functionally-graded (FG) hierarchical structure also make bamboo an excellent candidate for bio-mimicking purposes in advanced material design. However, despite its well-documented, impressive mechanical characteristics, the intriguing asymmetry in flexural behavior of bamboo, alongside its underlying mechanisms, has not yet been fully understood.

A micromechanical analysis of the fracture properties of saturated porous media

A two-dimensional single edge crack problem is employed to investigate the fracture behavior of saturated poroelastic media. The media are mimicked by a micromechanical model consisting of elastic matrix and square arrays of voids with prescribed uniform pore pressure. Finite element method is used to simulate the fracture responses of the model subject to remote stress and pore pressure loading. The stress extrapolation method is extended for the porous media to calculate the nominal stress intensity factor (SIF) from the crack tip stress field.

Development of a Biofidelic Human Head Model from MRI data

NRL-Simpleware head model

 

Traumatic brain injuries from head impact are a major issue across areas such as defence, automotive and sports, and can be costly to research using experimental testing. These injuries can be explored, though, through 3D models created from scan data and computer simulations.

ashutosh.agrawal's picture

Instability-driven vesicle growth in biological cells

Journal: PNAS, published ahead of print, March 9 2015, doi:10.1073/pnas.1418491112

Title: Endocytic proteins drive vesicle growth via instability in high membrane tension environment

Authors: Nikhil Walani, Jennifer Torres, and Ashutosh Agrawal 

simulation of large rotations by laminated theory?

Hello iMechanica,

 

I am wondering if it is possible to perform the non-linear analyses (including large rotations) by laminated theories such as First order Shear Deformation Theory (FSDT) or higher orders and so on. Normally, those theories are valid for moderate rotations but: does anybody know if there is any modification to extend it for large rotations?

Thanks in advance for any advice!

 

Best

R_N_S_S

Mesh Update in ANSYS Workbench After Simulation

Hello Everyone, 
I am using ANSYS Workbench (Static Structural). I need to update the coordinates of the nodes, after each simulation.The new coordinate conditionally depends on the stress tensor value of the previous simulation. If anyone have idea how can I solve this problem please help me out....

Thanks!

Ivan Tsukanov's picture

New Parametric Analytical Solutions in Plane Elastic Contact of Complex-Shaped Smooth Curvilinear and Wavy Surfaces

Dear colleagues!

I'm a new user of iMechanica. My research fields are contact mechanics and tribology. I would be very thankful for discussion of my first preprint as i want to publish it in scientific journal.

 

 

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