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The strength properties of European white fir

Hi there,

coule you tell me the strength properties of European wihte fir?

thank you!

Wrong pore pressure and effective stress state in ABAQUS

Hey.

I want to model an anchored sheet pile wall placed in a completly saturated clay material, where
the excavation steps on the left side of the wall have to be taken into account.

I am using the keyword in ABAQUS "*Model change, Remove" to remove my elements, so I can
simulate the excavation steps. Unfortunately, my pore pressures seem stranges in the
model when I am using this keyword.

question about explicit integration

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Hi everyone,

Simulation using Abaqus

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Dear Friend,

I am doing my PhD and my topic includes Simulation of Orthogonal Cutting Process in Abaqus. I am very new to Abaqus. May i request you to please send me some helping tutorials/files for the same. I shall be highly obliged.

Regards

Heera

E-mail:   mymailto2003@yahoo.com

Why different between Solid5 and C3D8?

Has anyone compared the results of Ansys solid5 element and Abaqus c3d8 element? I tried a very simple example with

exactly same conditions for both elements but got very different displacement results. I put both input files here,

can anyone help me check whether there is something wrong? Thanks.

Ansys Input:

Flexible Linear Shaped Charge Modeling

Hi !!! all

I am doing the Hydrocode simulation using AUTODYN 2D Explicit Hydrodynamic Code. There is apoint of doubt in simulation of a 2D problem regarding the location of Detonation inside the explosive. In the case of a conical shaped charge it is very easy to assume the detonation at the apex of the cone but in case of FLSC being a linear cord and the initiation is done axially, it is very difficult to assume the same condition as that of conical shaped charge.

Please give me some useful solution.

J versus r

Taxonomy upgrade extras: 

Macro in Hypermesh TCL code and Matlab

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Hi all,

I need to create a macro in Hypermesh with a TCL programming code. I have two problems. I've had the code yet, but It's written in Matlab code, I've heard that TCL can talk to Matlab by DDE. The second problem is that I don't know anything about TCL code. Anyone can help me, anyway?

 

Many thanks 

UEL CODES

Hi all.

I'm Filippo, a new entry on imechenica community. I'm looking for a simple UEL code for Quad_2D-plane stress or plain strain.

Here's someone that can suggests manual or similar. 

I'm grateful in advance. 

swiching Nodal Result output to Integration Points in ANSYS

Hi every body

i modeled a plane with a notch with elastic-perfect plastic material. somewhere in model the stress reaches above the yield stress

so i think the reason is that ANSYS reports the nodal result output by default wish they interpolated from integration points results.

i want to see the integration points results but i dont know where to finde them.

RC beam column joint wrapped with FRP sheets under cyclic loads

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Hi all

 

I am currently in my Master Degree in Civil Engineering . I am doing a research on concrete wrapped FRP sheets  with seismic loads and I want to do Finite Element Analysis using ANSYS. I already model concrete in ANSYS. Can anyone please help me  how to apply CYCLIC LOADS to the model.

and is it  necessary to make contact between different parts of solid element or not?

 

Awaiting the reply....

 

azadpoor's picture

New Nature journal launched: Nature Communications

The first issue of the new interdisciplinary Nature journal (Nature Communications) is avilable online. Here is the description of the journal from the website of the journal:

about the open source code for FEM

Hi, I am wondering whether there is any open source code for FEM for very simple cases. Thanks.

Help with curved specimen and mechanical loading

Background:
Rib fractures in infants are highly suggestive of child abuse. I am performing mechanical testing and finite element analysis on pig ribs with the aim of characterising the behaviour of ribs under anterior-posterior (from end to end rather from the side) loading.

Help needed:

Julien Yvonnet's picture

Multiscale method with model reduction

Model reduction based on Propper Orthogonal decomposition is widely used in Computational mechanics to reduce the number of degrees of freedom in systems. In the attached papers, we introduced a POD-based model reduction in a multiscale framework to significantly reduce the computations.

Analysis of FIBRE REINFORCED BEAM COLUMN JOINT SUBJECTED TO REVERSED CYCLIC LOADING

I have modeled a beam column joint with steel and concrete by using 5 parts. Is it essential to give contact between the  5 parts?. How to give material properties for ordinary concrete and fibre concrete?. please help me that how to give reverse cyclic load in ABAQUS.

   with regards

           B.Thanukumari

Arash_Yavari's picture

Finite-Temperature Atomic Structure of 180^o Ferroelectric Domain Walls in PbTiO_3

In this letter we obtain the finite-temperature structure
of 180^o domain walls in PbTiO_3 using a quasi-harmonic
lattice dynamics approach. We obtain the temperature dependence of
the atomic structure of domain walls from 0 K up to room
temperature. We also show that both Pb-centered and Ti-centered
180^o domain walls are thicker at room temperature; domain
wall thickness at T=300 K is about three times larger than that of
T=0 K. Our calculations show that Ti-centered domain walls have a

Mike Ciavarella's picture

Suresh's group Fighting Malaria: Understanding the Biomechanical Properties of Red Blood Cells

Suresh's group Fighting Malaria: Understanding the Biomechanical Properties of Red Blood Cells

Subra Suresh with Quinn

MIT Dean of Engineering Subra
Suresh with graduate
student David Quinn. Photo: L. Barry Hetherington

 

obtaining stress-strain curve parameters

Dear All,

In one of my elastic-plastic simulations, I have used the Combined hardening model with half-cycle to model its plastic behaviour. So, I've fed in a list of values from experimental data. Now, I understand that ABAQUS uses certain parameters to generate the stress-strain curve from the data that I've provided.

Is it possible to find out these parameters used by ABAQUS?

Thanks in anticipation,

Aneesh

N. Sukumar's picture

Linear scaling solution of the all-electron Coulomb problem in solids

In this manuscript (available at http://arxiv.org/abs/1004.1765), we present a systematically improvable, linear scaling formulation for the solution of the all-electron Coulomb problem in crystalline solids. In an infinite crystal, the electrostatic (Coulomb) potential is a sum of nuclear and electronic contributions, and each of these terms diverges and the sum is only conditionally convergent due to the long-range 1/r nature of the Coulomb interaction.

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