Hello
I have performed a calculation on a set of parts in a Motion Analysis and I would like to know if it is possible to extract in the form of a graph the evolution of the max von Mises stress value of a part as a function of time?
Kind regards
Hello @gbdia
The "Von Mises" value is static , only the "animation" option of the "Von Mises" image allows you to see how the material reacts between the min and max value. This means with zero effort and Max effort. "Von Mises" only provides information on the deformation with respect to the yield limit defined by the choice of materials, e.g. S235.
Nothing can be said about the time since this information is not indicated anywhere and has nothing to do with "Von Mises".
But in this case, the probes previously placed can tell you about these values.
A tip though! You can go through the animation with a minimum of 30 or 40 frames per second (otherwise you don't see the intermediate values displayed.
Then do frame by frame to see the values at a time "T" of all the probes. Then it's up to you to devalue the time between the moment of load 0 and the max load.
We should look at the results by putting checkpoints (probes)
Otherwise, if you want to introduce the notion of time, you have to go through frequency analysis which is only accessible with the PRO version it seems to me.
Kind regards
Hello Zozo,
Thank you for your message and I agree with you on the explanations on von Mises' values. I did indeed express myself badly in my message and on what I am trying to extract as information (although you answered it!!)
My system has a cyclic movement, so I can be sure that the min and max value will be between two time limits that I can know. Let's imagine that my system does a complete cycle in 2s, I try to know the values at 0.5s / 1s / 1.5s / and 2s. That's where I explained myself badly!! As you pointed out, I'm trying to know the value of von Mises at a time "T" but which are close enough to see the evolution.
To date I can only know the value at 2s yet I can see that SW does the intermediate calculations but I can't visualize them.
In the time settings I indicated from 0 to 2s I might have done better to put directly the values 0.5s / 1s / 1.5s / and 2s....
I'm going to restart the calculation with a higher number of images as you indicated in your message. My goal for the moment is to have an idea of the forces to which the parts of the set will be subjected. So as not to have too many surprises at the end of the design!!
Kind regards
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Hello@gbadia
You can put the number of images you want, you just have to wait 3 minutes for SW to generate all the images.
If I may (it's off topic I agree) for the yield strength, what always counts is the max value. It doesn't matter what the values are in between. You have understood that what you do is static analysis but in a way you would like to do dynamics.
Even if you make a video , it won't tell you at all what's going on dynamically.
On the other hand, to go further than static Von Mises, as you realized very well, you have to move on to the frequency analysis because the natural frequency of the object can be amplified by another part of the ASM.
If the ASM is subjected to vibrations by other parts (the example during training is a fan that vibrates a leg or spot welds).
After frequency analysis, it is sometimes necessary to reinforce the part or design it slightly differently (the leg in the example sees rays and some part is lengthened or the thickness changed), this allows to reduce the vibration of this small leg.
If I may say more (don't bang your head please) if you want to go further , you have to go through dynamic simulation which will be the only one that can confirm your manual calculations and those made in static.
You have to be wary of static , which can, in some cases and depending on the context, give you false assurance. Note that I don't know your ASM at all so I would be hard pressed to tell you more.
Be well ;-)
Kind regards