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Why does my MCD model always jitter?

Solution Partner Experimenter Solution Partner Experimenter
Solution Partner Experimenter

(view in My Videos)
It is a very simple model, whenever I press the play button , the model began to shake. Can anybody tell me why?

6 REPLIES

Re: Why does my MCD model always jitter?

Solution Partner Experimenter Solution Partner Experimenter
Solution Partner Experimenter
 

Re: Why does my MCD model always jitter?

Siemens Phenom Siemens Phenom
Siemens Phenom

Do you have a 'Spaceball'?  If so, you may need to reset it, or at least make sute the nothing is touching it when you start NX.

John R. Baker, P.E. (ret)
EX-Product 'Evangelist'
Irvine, CA

Re: Why does my MCD model always jitter?

Siemens Phenom Siemens Phenom
Siemens Phenom

Hi @tofinejin,

 

I was able to reproduce this from scratch in NX11.  I did a little research and found that it's the basic behavior of the physics engine and to be expected when you zoom in so close.  MCD is supposed to solve quickly to be able to be used for virtual commissioning close to real time requirements.  The solving mechanism is an "online" solving mechanism with a normal step time of 1ms, with this given it depends on the tolerances of the solver.  If you need higher accuracy consider using an "offline" solution like NX Motion, which needs to render each frame independently and will take a lot longer to solve.

 

Regards, Ben 

Re: Why does my MCD model always jitter?

Solution Partner Experimenter Solution Partner Experimenter
Solution Partner Experimenter

@JohnRBakerThank you for your reply, I have no spaceball in my model, just one slide.

Re: Why does my MCD model always jitter?

Solution Partner Experimenter Solution Partner Experimenter
Solution Partner Experimenter

@BenBroad  Thank you for this information.

Re: Why does my MCD model always jitter?

Experimenter
Experimenter
这个抖动完全可是忽视.
有几点是必须重视的:1.全局固定副在抖动,原因是固定副设置有错误,2位移不精确,原因是因为CPU性能不足.
你不属于这其中的两点,你可以尝试添加加速度和加加速度.