Deformable materials

[genesis1975]

Bye to all,
I have two parts in relative movement between them connected by an elasticized fabric. . How do I simulate the length change, turn it into an elastic band?

 

[genesis1975]

Can't you do that?

 

[lucadileta]

Bye to all,
I have two parts in relative movement between them connected by an elasticized fabric. . How do I simulate the length change, turn it into an elastic band?

try to be clearer and explain your problem in more detail, perhaps adding some drawings.

♪

 

[Stan9411]

the question is clear and, for what is my experience with the cad, you can not do.

cad software make indeformable objects. what you need is a graphic simulation software if you only want to create an animation, or a fem if you want to analyze the behavior of your fabric from a mechanical point of view.

 

[MassiVonWeizen]

you can simulate the extension or in any case the new form/orientation of an object compared to others simply by modeling the first with references to the other two.
doing this, in the environment together, to every move with a simple regeneration, you will see the new geometry.
depending on the references and constraints that are given to the object to be evaluated, certain changes will be made:
if I design a flexible with a spline and establish the length by removing the parts to which it is bound I will see the geometry straightened, while shortening the I will see bend
a rope with constant length and bound to a pulley and two counterweights will lower or raise one of the two according to the movement of the other

demonstration video

 

[Stan9411]

vabe but so I'm just updating the statically the location of a feature, compared to the others. is called parameterization and is a fairly basic concept in all 3d modeling courses.
I think (hope) that genesis looked for a tool that allowed him to obtain a continuous simulation along a given time span, as he spoke of “transforming it into an elastic”

 

[MassiVonWeizen]

enso (spero) that genesis sought a tool that allowed him to obtain a continuous simulation along a given time span

You can also do real simulation. I never used the motion module, so I don't even know where to go, but here's a video that seems to me to see exactly what you mean

instead for the simple change of geometry, after reconstruction, I add this video that is a little more carp than that of post #5

 

[Stan9411]

very interesting. I had no idea you could. I used creo3 for about 3 years and I'm pretty sure it didn't have this feature

 

[Tristus]

What of the January?
videoI don't know moneyworks, but in general to get a solid or a surface to assume the characteristics of an elasticized fabric it is necessary to build it with splits so that it can be deformed during animation. then proceed with animation. But I repeat, I don't know solidworks, but if you have the animation section, it should be possible. I did this with 3ds max

 

[Tristus]

the most convenient technique to adopt in case you want to reproduce a fabric also elasticized and that of "clothing". I don't think it's solidworks.

 

[MassiVonWeizen]

We expect some additional clarification from genesis, which in my opinion has misused the elastic term.

 

[genesis1975]

I would like to make the simplest solution come, for now, or an adjustment of the belt length referred to the variable distance between the connected parts, the example of tristus is to effect, but takes into account a tide of variables, section tightening, oscillatory motion, wave propagation...

 

[MassiVonWeizen]

then see the first video

 

[genesis1975]

Anyway I watched them all, they are very interesting

 

[Stan9411]

3ds max is a graphic program. clear that it manages “complex” animations like that. interesting that it has come to this also in the cad: if you could associate with the deformable components of the values of rigidity and damping, it would be very practical to carry out dynamic analysis

 

[Tristus]

... if you could associate with the deformable components of stiffness and damping values, it would be very practical to carry out dynamic analysis

I believe that graphics programs offer only a good visual rendering of what is a behaviour of a solid subjected to deforming forces. ie they simulate effectively, but only visually. but from here to think that you can make a real analysis of the efforts that come into play in an elastic that deforms there is by the sea. For example in the video I posted I had to add a second modifier after the changer cloth, this to simulate the narrowing of the fectuccia to the center at the moment of maximum stretching. but the values I gave to that modifier I gave them to the eye. Basically, I told you how narrow the screw was. the only modifier cloth would not have sufficed to return that effect.

even the values to set in the clothing are very approximate. It is sufficient to break the surface to be transformed into fabric, in one way rather than another, or with more or less splits, that the behavior of the "text" changes considerably. But they are useful to help in animation.

solidworks can make a real anal of efforts.

 

[Stan9411]

I didn't talk about fem analysis but kineto-dynamic simulations.

example: car suspension, we pass through the spring that designers had to shape to take into account the various encumbrances. what deals with dynamic simulation (to pull out accelerations, speed, forces etc.). ), it must suppress the spring and replace it with a dynamic spring-smorzator bond, as otherwise, after a nanosecond, the simulation is interrupted because the spring will connect with hub, biellette and who knows what. because the cad, at least in the experiences I had, is not able to dynamically update its shape.

I think, as you say, we're not at this yet. what we see in the tutorials posted is only "scene"