1. The velocity at contact is the boundary condition for the simulation (to reduce simulation time).
2. Calculating deceleration to zero is problematic since there is a lot of warping and the body isn't rigid, so hand calculations will be very rough, but I will try this and see if I get...
Hi,
Hope this is the correct forum for this kind of question.
I am doing an explicit finite elements simulation of a tank, weighs around 7.5 Kg with internal parts, falls from 1 meter. Since I never had a validation of such an experiment I am trying to understand if the numbers are right.
I...
I will be happy if you could give me some pointers instead of riddles...
I will also be happy if you could explain how did you come to think that I don't understand/know the general concepts of the stress/strain curve.
Please understand - I don't pretend that I do understand the concept fully...
So, Is "initial yield strength" the same as "yield strength"?
Currently I get good results when using the "yield strength" as the "initial yield strength" in the FEA software (Femap) so I guess its the same, but could someone please shed a light on the subject?
Thanks.
Let me rephrase (made some mess with the terms):
Usually I get the tensile stress at yield (or yield strength).
I need the initial yield strength, are they the same? or is the initial yield the end of the elastic portion of the curve?
Forgot to mention that I am dealing with plastics, so the...
Are those the same? if not, how do I calculate the initial yield stress from the tensile strength? all the materials properties I see on the web only specify tensile strength, and I need the initial yield stress as an input on non-linear FEA analysis. Is it possible to extract the initial yield...
Thanks for the reply,
I meant the other stress criterions, Since I know shear is the critical parameter, I check all three shear parameters, but than how should I consider the normal stresses in the points where the shear is at maximum, do they increase or decrease the stresses on the...
Hi,
First of all I must say, I am a bit ashamed asking this question...
Since its been a long time since I studied mechanics of materials and since I never used it in my line of work, I am trying to analyze a problem regarding this subject using COSMOS in solidworks, I have a model and I...
Hi,
Im reading an article (The meaning of einstein's equation : http://math.ucr.edu/home/baez/einstein/node6a.html" )
and can't understand the development of one of the equations, the equation is attached as an image, I can't understand the transition from the left side of the equation to...
From what i understood, you propose to calculate the deflection using your equation and then extract the force using regular beam deflection equations?
This could be feasble assumin I am trying to figure out the force exerted on a beam, unfortunatley this is not the case...
I was pretty sure...
Hi,
I have an impact test (Metal ball falling on plastic) and i have a problem conveting the energy (i.e. height and mass) to the force apllied to the plastic upon impact.
I tried calculating with impact formulas but its difficult to estimate the time interval of the impact.
I tried...