finite element analysis
It is a long-standing goal in metallurgy to enhance the strength of materials without sacrificing ductility. In a recent article in Nature Communications, we reported an effective way to evade the strength-ductility trade-off dilemma in twin-induced plasticity steel. By applying pre-torsion to axisymmetrical twin induced plasticity steel, we produced gradient twin structures in the steel: The core is essentially twin free, and twin boundary density increases along the radial direction and maximizes at the surface.
This preliminary release is limited to linear elastic material, axisymmetric geometry, spherical rigid indenter, and various boundary conditions.
We are currently working on adding viscoelasticity (Prony series), cylindrical and conical rigid indenters, and loading functions.
I did a 2D beam bending problem with CST and Q4 element, respectively. CST gives better accuracy. Is it due to the shear locking effect with Q4?
Comparing experimental fracture properties and micromechanical (or global-local/multiscale) finite element simulationsSubmitted by prathyush963 on Wed, 2014-02-26 17:47.
I am interested in developing a global-local finite element model (micro/macro) to simulate flexural testing of a composite material. Flexural loading will be applied on global model (macro) and crack propagation will be simulated in the local model (micro). I want to compare stress intensity factor or any other fracture property obtained from local model (micro) with that of experimental results.
I would appreciate if anyone could suggest some references/literature in this area. Any kind of suggestions would be great!
In engineering sciences, we usually end up using either the second- or the fourth-order differential equations, and the MWR (the method of weighted residuals) works pretty well for them.
The question is: how about the first- and the third-order differential equations? Why don't we see any applications of MWR for these odd-ordered differential equations? What gives?
New research is emerging out of a project where Ohio State University used our software to reconstruct the anatomy of an ant neck. In this project, micro-CT scans of an ant neck were reconstructed using Simpleware software and exported as a mesh for analysis in Abaqus.
Simulations in Abaqus identified where stress concentrations tend to take place for ants' necks, providing insight into how they are able to support large weights. This research has created the potential for developing micro-robots capable of handling similar loads, as well as other ant-inspired designs for space engineering.
The engineering analysis group at Baxter Healthcare has an immediate opening for an FEA analyst at the Senior Principal Engineer level. The person will work from the Baxter R&D facility in Suzhou, China, and report to the manager of analysis group in Round Lake, IL.
Enclosed is the job description. Interested candidates please apply at http://lnkd.in/bzHxzsy.
= Job Description =
Job Title: Sr Principal Engineer
A Postdoc position on “Risk-based Selection of Constitutive Models for Geotechnical Analysis” is open at Ecole Centrale de Nantes in France. Fore more details, see the attached pdf file.
Effect of geometric parameters on the stress distribution in Al 2024-T3 single-lap bolted joints- Outstanding Paper Award WinnerSubmitted by Payam Soltani on Sat, 2014-01-04 14:20.
The article entitled “Effect of geometric parameters on the stress distribution in Al 2024-T3 single-lap bolted joints” published in International Journal of Structural Integrity
Applications are invited for few open positions in the area of
multiscale simulation of fatigue and fracture of advanced alloys and
nano-material based composites. Primary focus of this research is investigation
of fatigue and fracture behavior of nanomaterials and to develope various
constitutive models for continuum, based on large scale atomistic simulations.
Research effort will include development of analysis and design methods toward
improving material/structural behaviour using computer simulation. Interested
candidates should have preferably MTech/ME degree in
mechanical/civil/aerospace/material engineering discipline with good knowledge
Three-dimensional simulation of crack propagation in ferroelectric polycrystals: Effect of combined toughening mechanismsSubmitted by Amir Abdollahi on Fri, 2014-01-03 06:43.
We simulate the fracture processes of ferroelectric polycrystals in
three dimensions using a phase-field model. In this model, the grain
boundaries, cracks and ferroelectric domain walls are represented in a
diffuse way by three phase-fields. We thereby avoid the difficulty of
tracking the interfaces in three dimensions. The resulting model can
capture complex interactions between the crack and the polycrystalline
and ferroelectric domain microstructures. The simulation results show
the effect of the microstructures on the fracture response of the
material. Crack deflection, crack bridging, crack branching and
ferroelastic domain switching are observed to act as the main fracture
toughening mechanisms in ferroelectric polycrystals. Our fully 3-D
30th October 2013
- Deadline for submission of abstracts (a text of 4000 characters max.)
We are currently looking for a PhD
student in the area of Computational Structural Mechanics. PhD applicants with a MS degree and publication in the area of solid mechanics,
computational mechanics and finite element analysis will be preferred.
Fixation and Mechanical Properties of Implanted Cartilage Replacements - Overview of three recently published papersSubmitted by Ali_Vahdati on Sun, 2013-09-29 13:08.
full-thickness cartilage lesions of the knee caused by trauma, disease or joint
instability are a common disorder affecting people of all ages. Implanted
cartilage replacements (ICR) have the potential to overcome the limitations of
conventional treatment methods and are a promising approach to restore
functionality of the joint. In spite of some success in engineering
cartilaginous tissue, inferior biomechanical and biochemical properties of ICR
compared to native articular cartilage (AC) and inadequate quality of fixation
This is a recent article in Acta Materialia on the propagation of conducting cracks in ferroelectric ceramics
Title: Conducting crack propagation driven by electric fields in ferroelectric ceramics
Authors: Amir Abdollahi and Irene Arias, Universitat Politecnica de Catalunya (UPC), Barcelona
Postdoctoral Fellow Position
Tissue Mechanics Laboratory
Wallace H Coulter Department of Biomedical Engineering
Georgia Institute of Technology
Opening — Immediate Availability
Computational Solid Mechanics Research
We are looking for a full time Engineer to assist with
simulation and analysis of nonlinear problems, sometimes with multiphysics
content. Responsibilities include engineering analysis and design. Ph.D. or
Masters Degree in mechanical engineering, chemical engineering, aeronautical
engineering, or physics with some industrial experience preferred. Strong
academic record and references necessary. Experience with finite element method
necessary, and experience with Abaqus or COMSOL desirable. Will collaborate
with other engineers on a range of engineering projects that require strong
Abaqus 6.13 - Live Webinar! July 23, 9am EDT and 12 pm EDT. The latest release, Abaqus 6.13 delivers a number of powerful, customer-requested enhancements for modeling, meshing, visualization, contact, mechanics, and performance. These improvements enable customers to reduce development time and costs, while increasing the efficiency of the product development process through highly accurate simulations of real-world product and material behavior.
New web page of Finite Element Analysis software Z-set is now open: http://zset-software.com/
What is Z-set
Z-set is a computational code devoted to the analysis of material and
structure behavior, involving a finite element solver and a collection
of specific tools for material parameter calibration, preprocessing and
postprocessing computations. Z-set is the result of 30 years of close collaboration between the
A postdoctoral position is available to conduct research in
the multi-physics modeling and analysis of DNA-based nanostructures. The
research is conducted jointly with Professors Mark Bathe and Klaus-Jürgen Bathe
at MIT. The candidate should be familiar with nonlinear finite element methods.
Please email your application to:
"Prof. KJ Bathe" <firstname.lastname@example.org> with the subject heading "Modeling DNA-based Nanostructures".
I'm trying to model the ISO tests (as per ISO 1496-3) for a tank container subjected to static and dynamic loading using finite element technique. Regrading this work sufficient research papers are not available. Another thing is that, for fail-safe design and fatigue analysis there is no such documents known to me. Can you please help me in this regard?
Guidance from experienced colleague is highly solicited.
One PhD student position available at the Department of Mechanical and Aerospace Engnieering of the University of Central Florida. Students with background in solid mechanics, computational mechanics and finite element analysis are particularly encouraged to apply. To apply, please send your resume and representative publications (if have) to Dr. Yuanli Bai (email@example.com). The opening is until Spring 2014.
I've modelled a DCB specimen and applied Boundary conditions and load... I followed the same procedures given in abaqus documentation... As expected the crack initiates and propagates along the interface... I can get the Resultant force vs displacement plot from the analysis.. But i dont know how to plot the fracture toughness vs crack length plot in ABAQUS..
Please help me... Your suggestion would really help me a lot..