Flexible subset animation

Simulation
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1

Hello

I'm looking to make an animation (motion analysis) in an assembly that contains 2 flexible subassemblies (connecting rod-piston).

I need to animate them separately in sync. I move the time bar, then move one of the connecting rods and so on....

Impossible, they always come back to the beginning..... I tried to break it all down and there it works. On the other hand, it's a struggle, to make tests and then modifications on the reference model.

Am I doing it wrong or impossible to animate a component in a flexible subassembly?

Thank you.

A+

2

Hello Hervé.maréchal,

For my part, I think we should go through configurations.

Try it and let me know.

@+.

AR

 

3

Hello AR,

I don't think that configs are the right solution because you can't manage with configs a broken assembly state or not.

At the same time, I have the impression that you shouldn't move the parts by "hand" by adding a key but always use the motors .... ?

A+

4

Do you know how to put an engine in installation?

Currently he continues as if nothing ...

Do you see some things that would explain my mistake?

Thank you.

******************************************

by adding a motor at 0 RPM, it stops ..... a bit cumbersome as a management

 

1 Like
5

Hello

Regarding "motion analysis" it's with the motors, force, spring....., manual movements are only supported in the "animation" studies (I rarely use the module under SW18 so not sure of the new features!) .

Regarding flexible assemblies, it is possible to analyze the movement of the same subassembly (inserted several times) with opposite, random movements, etc. Etc without the need to create configurations or whatever,

The procedure with flexible assemblies is the same as with an assembly of simple parts.

Regarding the engine in pause, it is possible to vary the speeds as you wish (movement > data point). 

2 Likes
6

Hello Lynk,

Thanks for the info about the manual move.

Thanks also for the movement<point of data on the other hand you shouldn't stay in interpolation Cubic Spline because it doesn't follow the instructions at all (why?) on the other hand works in linear, a little less in Akima. Why these parasitic movements?

Can you tell me, if when I change the engine settings, the timebar has to be in a particular position?

Are the angles indicated at each instant relative or absolute angles?

Thank you.

A+

7

Hello 

Attached is an approach to be inspired, 

  • For the cubic spline, it follows the instructions (refer to the graphical representations) 
  • For the time bar, it's no.
  • For angles, it's relative (see graphical representation of angular displacement). 

as_000.zip
8

Hello @herve.maréchal 

A little point of attention!

The management of flexible sub-assemblies is not always easy because it generates errors depending on what you do (because you often have to do weird manipulations for a flexible sub-assembly to become so again). In addition, the flexible s/s sets generate latency effects in manual and probably also in automatic.

To be sure that it's not the flexible status that is causing the swarming, try if it's not too complicated to have a single ASM and not subassemblies in a large assembly

Kind regards

PS:   STP doesn't tell anyone but I hate this part of the software which is totally counterintuitive I gave up using it. I can't count the number of people I have........ with this nutty thing
To really use it, you need a  good two to three days of training. Those who know how to use it seem satisfied, but at what cost!

4 Likes
9

Hello

Thank you all for your help.

Totally agree Zozo_mp, this module is a misery, it is totally counterintuitive.....

Good luck

A+

1 Like