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Yes, the ram is stroking horizontally and has dynamic vertical vibration due to its own weight. I don't say it has no horizontal vibration excited by the machine's own drive system, but problems arise from the vertical vibration only... e.g. the ram hits the cylindrical tool around it near the...

Do such bearings have significant damping or rather the material damping of the ram shall be considered in the model? I assume that the stiffness of the bushing against rotation/bending of the shaft would also derive from the bearing stiffness, right? GSC

Hi, A long cylindrical ram which is making axial alternating movement, and bending mostly due to its own weight. The ram is supported by two hydraulic bearings with pressure control and a slide joke at the drive side. The vertical vibration of the ram often causes problems at certain speeds. We...

Hi, We have a long cylindrical ram which is making axial alternating movement, and bending mostly due to its own weight. The ram is supported by two hydraulic bearings with pressure control and a slide joke at the drive side. The vertical vibration of the ram often causes problems at certain...

Drej> Thank you for your post, I see the point in modelling the bearings as springs and assuming that material damping is present. Can you please explain to me what do you mean with considering the type of connection when applying the damping? Do you refer here to the bearing type in the real...

To stupid questions you can only get stupid answers. GSC

Hello, I would like to build an FE model to investigate the dynamics of a long shaft which is making axial alternating movement, and bending mostly due to its own weight. The shaft is supported by hydraulic bearings with pressure control. How shall I take these bearings into consideration in...

Try the Visible Human Project for the heart shape. Somewhere deep there you can download the raw image data. I had success with it modeling the spine. http://www.nlm.nih.gov/research/visible/visible_human.html gsc

Tobalcane > When we weight something in metric we weight according to Isaac Newton's Second Law of Motion. The acceleration of an object is proportional to the force exerted on it divided by the mass. This is how force is normally defined, by the formula usually stated as F = k·m·a. (The units...

Hi, I am a mechanical engineer, I have a good knowledge on steel structures, but almost nothing when it comes to bricks or concrete. I need to reinforce my house wall. I think the structure what was asked for is what you call shear frame, but please correct me if I am wrong. In practice I...

Hi, Check out the Visible Human Project http://www.nlm.nih.gov/research/visible/visible_human.html gsc

MVD, What you described is really typical in the NL. Everyone must agree even for the simplest decision. I personally took it on a way that the questions they ask are not offending. They are not questioning my authority or knowledge. It is just curiousity, and they want to make sure, that...

-I agree with RDK, good or perfect resumee and CV is a very important phase of jobhunting. -Assess how many applications you have sent. 1 interview from 30 applications is good in the UK being non-british. -Due to the increased security measures in the english speaking nations since Sep.11...

I agree with brad in terms of that changing the license server is a change to the network, however charging you for administration fee after an incidental hardware failure is completely insane, and unacceptable. Even if it is stated in the license agreement, the business manager should act as...

http://www.sensorprod.com/ No experience, but seen various papers and reports on the topic here and there; mostly on knee joints. gsc

Job 1. - I knew somebody Job 2. - Somebody knew me Job 3. - Went there and asked a manager if they need anybody who solves problems :) Job 4. - Decided what do I want to do, collected company listings who were in business in the field (over 200), went through their websites one by one, applied...

Hello, Anybody knows if it is possible to determine the Prony series representation of data points up to the i-th term of the series (i=<6)? If yes, how? Thanks in advance GSC

Hi mmagg, I have experience with mechanical desktop, so in inventor I suppose it can only get better. I experienced no problems importing IGES to Ansys from mechdesk, however there are some general guidelines to prepare the geometry. I like to export wireframe (2D or simple 3D) or surface...

Hi, Here is another might not fair post... For solid modeling SW or SE are very good. However their import-export capability and compatibility unfotunately are far too limited compared to Inventor. For surface models, consider using Inventor. GSC

Hello everybody, This forum seems to be pretty dead right now. Nobody has any problems with Marc? ;) I hope the questions below will initiate some nice discussion. I am tying to build up a 2D axisymmetric deep drawing simulation and I bounced into several issues. I would like to hear your...