Hello all,

I need to mount an accelerometer in the test rig for dynamic measurement (machine condition monitoring). I am using MMF make KD41V accelerometer. The machine has limited space and I have to protect the accelerometer from splashing oil due to continuous lubrication. Due to space constraint, i have came up with a design in which a 25mm long, 25 mm diameter hylam material block is used in between machine face and accelerometer. Hylam material acts as insulator too. My question is, if i use such a long material in between accelerometer and machine face, will it affects the reading? Schematically this is shown in the following figure. Please guide me!

-Anoop A D

Dear all,

 The programme for the course on "Contact mechanics with the CONTACT software", to be held October 28th-29th 2010 in Delft, the Netherlands, is now available via the registration form on our website www.kalkersoftware.org.

Best regards,

Edwin Vollebregt

 Hai,

 i tried to apply hydrostatic pressureon a plate.But the input file showes,it is distributed load .how can i get correct figure i.e, uniformly varying load on the plate

Hello,

      Im doing my M.Tech project on 'Analysis of grinding using nano cutting fluids with ANSYS" .  But ANSYS has to work at nano level.. So how to make programming to make ANSYS to use to solve nano level problems.

Hi,

I am modellling a beam with a  hole in ABAQUS and runs pretty well. Now I would like to model a small area of the beam.

For an example the rectangular area which has been shown in the attachment file. When I model it What should I put as a boundry

conditions ?. I know that you may say that reactions of the beam (namely, Moment, shear, axial force) but I would like to just

investigate this part under pure bending and shear. What should I do? 

A model without  support is unstable ????

It is a crazy idea but how could it be followed?

Thank you,

Parisa

hi everybody(imechanica users)

            with best regards. i am the beginer of msc marc.my field of research is ultrasonic turning of high strength material.I want to mesh ultrasonic turning.pls if u have any tips/tutorial related in my field.pls reply me in my imechanica site.

Hi

In modeling of orthigonal machining. it is necessary to define the contact between tool surface and the workpiece. but the region of contact during the simulation change . the tool and workpicece has been simulated as 2D deformable parts.  the problem is that what conditions must be considerd to define the suitable contact interaction between two deformable 2D part instances in abaqus? what kindes of surfaces must be define for tool and workpiece? node based, element based or geometry base surface? and how diefine conditions in initial increments to prevent the errors that cause the simulation terminate!?

Hi all

              I have a problem with modelling a cylindrical container. The container is made up of steel, its  YMS = 2.0E11 , POS = 0.3 ,DNS = 7850.0 ,given in MKS system , and thickness = 25 mm ;  I have to model container as rigid, such that what ever the base excitation is the same should be the displacement at every point of the container. How can I model this? I know that it could be made rigid by increasing E value, and also by increasing  thickness. I tried both but I am not getting the result as I wanted. I feel I am going wrong in making the container rigid. 

HI

I am working with abaqus6.8.1. I am interesting to model orthogonal
machining by ALE adaptive remeshing IN 2D. In this way I have a problem.
For modeling of machinig inflow and outflow surfaces(eulerian) with
inflow boundary condithion type velocity(eulerian) must be defined.but
the default definition of surfaces and region or boundary type in abaqus
are lagrangian. I read on user manual that this type must be change to
eulerian.

I am trying to model a tube which is filled with liquid that is being crushed.  I am using Coupled Eulerian Lagrangian to model the problem in abaqus, and there are a few distortions/errors in the model.  I am using symmetry to model only quarter of the model.  The liquid actually comes out from the sides of the tubes as the two attached pictures show.  

Hello everyone

I have a material with a compression modulus and tensile modulus along with Poisson's ratio. Are compression modulus and tensile modulus related to the Lame` constants? Or does this material fall under 'cubic symmetry' which needs three elastic constants? In that case, how are they related to the elastic coefficients (C12, C44 or C11)?

I need to incorporate these material properties in ABAQUS. How do I model this material in ABAQUS?

Any lead on this problem is appreciated. Thanks a lot.

--

Nikhil

Dear Sir or Madam,

I am Mechanical Engineering student I have problems

with finding book with solved problems in Potential Flows,

Fluid Mechanics.

I would be grateful if you could  recommend me

some book or other source wich contains many

solved problems of this matter.

Thank you very much.

Sincerely,

Oat

Hi,

I want to medel an overhead line conductor in Abaqus. As you know, the suspended cable has a parapolic (or catenary) profile under its weight. There is a pre-tension (or pre-strain in elastic region) on the cable due to its weight.

I found in the help of Abaqus that I can use the "Bolt load" option to define the pre-tension, but it does not work for my model. Because my model doesn't have surface to choose for this type of load (it's a 2D wire part).

Would you please let me know how can I define this pre-tension (or pre-strain) in my model?

Thank you in advance,

   The concept of axis of of pure rotation  ( or instantatious center of rotation)  is a bit confusing. The text books in engineering mechanics( Irvin shames , Beer & Johnston etc) tells that the locus of points in a body, which is (are) having zero veloity.   This fits  well in case of a 2D motion. As a limiting case of this we are assuming the center of rotation is at inifinity for a rigid body moving in a straight line

Hi,

I am working a long time on using cohesive elements in ABAQUS but up to now my efforts have be unsucessful.

I want to use of cohesive elements with the following paramters:

Damage initiation: Normal stres= 1.9 MPa, shear stress= 6.2 MPa 

Damage evolution:  Mode I fracture energy= 0.5307, Mode II farcture energy= 0.6623

Could any body kindly let me know that what would be my model E/Knn, E/Kss parameters?

Thank you,

Parisa

hi every body..

im trying to  model interface delamination in ansys. i use inter204 or 205 for interface element.the problem is that as the stress in interface riches the yield value, the solution doesnt converge.

i tried to increase  the number of substeps or decrease the size of element, but the problem still exists.

Hello I am a student of the University of Manchester. I am modelling a SHPB assembly together with the specimen, and I am having trouble with placing the loads,creating the boundary constrain between the incident, transmitter bar and the specimen. I created the interaction between the assembly with a suppressed TIE, and after loading and submitting the job I kept on getting errors. The load did not transmit to up to a quarter of the incident bar.
I neeed suggestions on how to apply the attachment between the separate components that make up the assembly, how to time step properly and the loading sequence.
I made use of ABAQUS Explicit
Thanks

The publisher sent me the other day this new book by Audoly and Pomeau.  I haven’t gone through the book carefully, but a quick look has indicated that this is a very special book, well worth a close reading.  The book is beautifully written and well produced.  The authors have captured the recent excitement about thin elastic objects, such as rods, plates, and shells.  While existing books on plates and shells mostly focus on calculating critical loads for instability, this new book describes shapes produced by instability.  Examples include wrinkles in a leaf, ridges in a piece of crumpled paper, and curls of a hair.  The subject is photogenic, and the book contains a large number of delightful illustrations.  The book approaches the subject through physical phenomena, rather than mathematical formalisms.  The authors have intended it as a text for a course at the level of senior undergraduate students or beginning graduate students.         

                What we measure on shock waves and how we interpret

                                               the results.

Hi,

 I want to model an Aluminum substrate with coating on it.  Is there someone who knows how can I define the attachment of intersection in ABAQUS?

Thank you in advance.

  ABSTRACT

Dear all

I am looking for some papers about hygrothermal effect in composite plates.

some of these are here:

How can we derive dynamic beam equation from navier equation in elastodynamic? I tried with the displacement vector field:

u=-z*w(x,t)

v=0

w=w(x.t)

and put it in navier equation, but it does not work.

hi all,

i want to perform dynamic analysis of a tank filled with fluid. I was trying to model this in ANSYS with FLUID80 element for fluid and shell element for the shell. But due to complexity, i was forced to used degenerated solid element, which FLUID80 does not allow.

please tell me any other way to model it.