Steering column torque fluctuation

• Jan 5, 2023

• #2

GregLocock

Automotive

Apr 10, 2001

23,885

Orbiting a small yellow star

OK, and the error message TELLS you what to do. You've got an overconstrained system, you, the engineer, have to decide which constraint to remove.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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• Jan 5, 2023

• Thread starter
• #3

Shivam16

Mechanical

Jan 4, 2023

6

IN

I got the message but this same model with same constraints is working for other column's data.

 

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• Jan 6, 2023

• #4

GregLocock

Automotive

Apr 10, 2001

23,885

Orbiting a small yellow star

So all you've changed is hardpoints?

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

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• Jan 7, 2023

• Thread starter
• #5

Shivam16

Mechanical

Jan 4, 2023

6

IN

Yes but I didn't just edit that in existing structure, I made the entire assembly from start using new hardpoints. I just followed the same method.

 

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• Jan 7, 2023

• #6

GregLocock

Automotive

Apr 10, 2001

23,885

Orbiting a small yellow star

OK, dark arts time. ADAMS solver doesn't read your model, as such, first it is compiled into a big text file called whatever.adm . Export the adm file of the model that works, and the one that doesn't. Use Beyond Compare or gdiff to compare them. If you are lucky they'll have the same structure, and the only differences between them is the marker locations. Another option is to run through the models with the graphical topology tool and hope you can spot a difference.

The other option is that your new hp are bad and cause the mechanism to lock up in some new and interesting way.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

http://eng-tips.com/market.cfm?

 

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