Animation not working in rendering environment

[ssmatmec]

My animation of ic engine seems to work in 3d modelling environment , but it does not work in rendering environment.

To animate the ic engine i placed a angular constraint ( undirected) and used the drive command in constraint to animate it.

the above video the assembly file is in modelling environment.

The above one is in the rendering environment .

The engine doesnt make a full revolution.

[blandb]

Can you share your time line settings for the animation of the angle? Or can you pack and go your assembly for others to review?

[johnsonshiue]

Hi! I suspect there is some sort of conflicting constraints or a component flips 180 degree in certain condition. Please share the files here. The forum experts can help take a further look.

Many thanks!

[ssmatmec]

these are the files, i will attach remaining files in next reply

[ssmatmec]

these are the part files.

[ssmatmec]

this is the iam file.

[ssmatmec]

i have placed a angular constraint between the XZ plane of crankshaft and XZ plane of origin of iam file. Then i used the drive command in constraint to animate , but it didnt work well

The above picture shows the timeline.

[blandb]

An IAM file is just a file that links all parts to it, it will not automatically sent the associated files, you must also place in the files. 

[blandb]

I just drove the angle constraint from 0 to 10 seconds and 0 degrees to 360*4...

Please see attached simple video

[ssmatmec]

the other part files have uploaded it

[ssmatmec]

but why doesn't my animation work?

[blandb · Accepted solution]

I just changed the angle constraint to either of the other types(directed and explicit) and it works fine.

[johnsonshiue · Accepted solution]

Hi! I think this has something to do with the angular constraint. To persist the rotational direction, it is better to use the Explicit Refence Vector option. Edit the angular constraint -> click on the 3rd button -> select the shaft as the reference vector. I believe the animation will work better.

Many thanks!

[ssmatmec]

i wonder why it didnt work with un directed angle constraint