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cracking analysis OF a 3-points bended sandwich beam in the negative stressed area of the beam (above the neutral axis)

Submitted by Ilias I. Tourl… on
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Hi,all

I'm looking for ideas-ways to model the above mentioned thema and solutions to overcome some obstacles. Here are some observations of mine:

1) Above the neutral axis of a bended beam the stress field is negative.Furthermore the traditional type of K factors estimation in Ansys is insufficient.The reason as i believe is that we haven't relative despacements of the crack nodes along  y(normal) axis.In contradiction we have shear desplacements.So i retrieve Ki nearly zero and Kii some noticable results.(using contact elements)

modeling in abaqus using dynamic/explicit

Submitted by Anonymous (not verified) on
research

HI ,

I am Ashutosh..

i m a student of Mtech in cad/m from MNNIT, ALLAHABAD, INDIA.

I am working on my thesis for mtech which is to model erosive wear of materials under particle impact.

pls i need help on it as how can i model and simulate in abaqus/explicit.

 

hoping a reply..

regards

ashutosh 

HELP WITH EDM ANSYS MODELLING

Submitted by ansys on
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NEED HELP WITH ANSYS MODELLING OF ELECTRICAL DISCHARGE MACHINING

HAi all,

 

I am a gradute student working on my thesis.Right now i am working on the EDM TOOl wear simulation. CAN ANY BODY HELP ME  on how to do modelling of ELECTRICAL discharge machining tool wear using ansys. Its very urgent . By simulation i need to produce a spark between an electrode and work piece. Due to dischartool shape chages. I am intrested in this tool wear

 

 

 

Thanks in advance

krishna

HELP WITH EDM ANSYS MODELLING

Submitted by ansys on
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HELP WITH EDM ANSYS MODELLING

HAI ,

 

My name is krishna. I am a graduate student working on ansys.My advisor told me to simulate edm tool wear using ansys software. i am trying to get spark produced at the end of the tool .But i am not getting the results.Pls can any by help me with this simulation.

 

 

Its very urgent

 

Thanks

krisna

About the polycrystal plasticity

Submitted by Yuanpei Duan on
research
UMAT
polycrystal

Hi everyone,

I am trying to build polycrystal plasticity model  by using UMAT subroutine in ABAQUS. As we know, the orientation of grain is always espressed by Euler's angles. What I want to know is  how to assign different initial orientations to different grains using Euler's angles in Umat subroutine. Could anybody tell me how to do? Is there any example ?

Many Thanks,

Yuanpei

Void expansion as wave phenomena - might damage evolution be mathematically related to fluid dynamics and turbulence?

Submitted by Amit Acharya on
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continuum mechanics
nonlinear PDE

The main idea is the following: a most natural mathematical setup for considering the motion of the void-solid interface of an expanding void is that of the traveling wave. Thus, a theory for macroscopic damage evolution may be suspected as being a homogenized version of basic theory that has such wave phenomena as an essential ingredient. This paper is a first step in probing such questions. 

Mechanism to increase energy efficiency

Submitted by Jigar Y. Patel on
research
FEA
Energy efficiency

As shown in figure two pulleys can rotate about their axis. Stationary
plate is simply supported on these two pulleys. Now the weight of
stationary plate applied on each pulley in vertical downward direction
is Mg/2. This Mg/2 will divided in two parts. One is tangential and
second is towards the center. Tangential part will help to rotate
pulleys and toward the center part will generate the friction.

Force is stationary and it can help to rotate pulleys at some angle.



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