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HELP WITH EDM ANSYS MODELLING

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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

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

implementation of constitutive law for concrete in ANSYS

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hi

i want to model a concrete silo with shell91 element in ANSYS how can i implement a constitutive law for concrete in ANSYS

About the polycrystal plasticity

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

Amit Acharya's picture

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

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

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.

Energies Fracture

Dear,

 Please show me what are and how to determine the Kinetic energy, Strain energy, Fracture energy during propagating of crack.

Thanks,

 

Extended Chaboche viscoplastic model for cyclic loading

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These days I've been applying oneself to implement the Chaboche viscoplastic model in ABAQUS user-subroutine for simulating the cyclic loading in single crystals.
The procedure can easily get out. I'm not sure about the problem, the deduction of Jacobian, the convergence? 
Btw, I know there is free subroutine for crystal plasticity by Huang YG. I wonder if the UMAT routine for chaboche model is available, then I can generalize it to fit for my case.
If pity there isn't, guide or example for viscoplastic model can be of great help also.
Thanks a lot

Rui Huang's picture

Journal Club Theme of March 15: Impact of Chip-Package Interaction on Reliability of Copper/Low k Interconnects and Beyond

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The exponential growth in integrated device density has yielded high-performance microprocessors containing almost 1 billion transistors per chip for the current 65 nm technology. Continuous scaling of the devices and performance requires innovations in materials, processes, and designs for both back-end-of-line (BEoL) interconnects and packaging structures. Mechanical reliability has been a limiting factor for implementation of new materials and processes.

sajadco champani

i want to work in field of simulation and especially simulation of machining.

Teng Li's picture

Making flexible metallic glasses

Well-known for its high yield strength, metallic glass often suffers from its low ductility and intrinsic brittleness, as discussed in a recent iMech jClub theme on plasticity and failure in metallic glasses led by

Konstantin Volokh's picture

Mechanics of growth and rupture of abdominal aortic aneurysm

We present a coupled mathematical model of growth and failure of the abdominal aortic aneurysm (AAA). The failure portion of the model is based on the constitutive theory of softening hyperelasticity where the classical hyperelastic law is enhanced with a new constant indicating the maximum energy that an infinitesimal material volume can accumulate without failure. The new constant controls material failure and it can be interpreted as the average energy of molecular bonds from the microstructural standpoint.

Post-buckling and Snap-through Behavior of Inclined Slender Beams

In MEMS fields, a need arises in engineering practice to predict accurately the nonlinear response of slender post-buckling beams, especially the nonlinear transverse stiffness. The bistability of the post-buckling beams is excellent in reducing power consumption of micro-devices or micro-systems. However, the major difficulty in analyzing the post-buckling and snap-through response is the intractability of the geometric nonlinear control equations of large deflection beams.

Does anybody have a simple example Program of bounding surface model, or electronic version of books reports..

Hi, everyone

I just start my research on bounding surface model for soil mechanics. Does someone have documents about programming of bounding surface model for stress-strain behaviour with a piece of program? Thanks a lot for your help.

Abaqus User Element and Python Script

Hi, 

I must use user subrutine UEL in a Python script.

 

elemType1 = mesh.ElemType(elemCode=???, elemLibrary=???)
p.setElementType(regions=r, elemTypes=(elemType1, ))

 

 

what are the elemCode and elemLibrary that i must use????

 Thanks for help 

 

 

 

 

Teng zhang's picture

Questions about symplectic conservation of MD

MD method is widely employed in different areas. However, as we all known that the limitation in timescales and length scales and the stiffness problem due to high frequency molecular vibrations are still important and difficult issues to be solved. While, characteristics of symplectic conservation is important for numerical methods. I found that only a few leteratures discussed this issue, and seldom new symplectic methods were widely adopted expect for the classical leap-frog Verlet  algorithm whose characteristics of symplectic conservation was proofed later.

Parallel Computing in the Multi-Body System to Vehicle Dynamics?

Has someone worked on the parallel computing in the multibody system to the vehicle dynamics? It's what I am doing now. I am faced to make a choice, OpenMP or MPI? OpenMP is a little  easy to program, but with less portability. I prefer MPI and I think if it is a best choice to parallelize the constraint libraries, although it is a bit difficult to program. Am I right? Is anyone  also doing it now? Opinions and suggestions are welcome!

                            Xianfeng Ye 

 

How to model a viscoelastic material on ANSYS?

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I am a mechanical engineer in Turkey in senior year. As a graduation project I have to model soft tissue cutting operation by using ANSYS. The main aim in the project is;

1.Choosing
the correct material properties (SOLID,SHELL etc.) and correct
method( Prony Series or Generalized Maxwell for
viscoelastic)

2.Creating a cylindirical model as an example
and than creating the orginial model as a representation of the soft
tissue(in this case the tissue must be some living organ ex:liver )

3.By
using the contact modeling (I learned that it requires to have some
detailed experience in writing subroutine) dividing the material into

Is there any computing module which can compute a heap of disk elements in DEM(discrete element method)?

Is there any computing module which can compute a heap of disk elements in DEM(discrete element method)?it'd be better if it is written in matlab or C/C++. I'm doing research on the combined DEM-FEM. I need such module so as to save my time.

Thank you 

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