How to set non-linear spring rate in MSC Adams (eg Bushing) through force-displacement?

[karachun]

Good day,

we have at our disposal data on the stiffness of a three-dimensional spring in a tabular form "force-displacement" (in three directions). We need to set the spring rate through this data.
An example of the data is hovered below.

Force, N Displacement, mm
-3500 -35
-2000 -15
0 0
2000 20
3500 40


How can you set the non-linear spring rate (eg Bushing) through force-displacement?

Thanks in advance!

 

[GregLocock]

View, or Car, or what?

Cheers

Greg Locock


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

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

 

[karachun]

Hello Greg.

I want to create NL Bushing in View module.

 

[GregLocock]

I don't use View, so this is a bit of a guess

Create a spline for your data

create a bushing
in the K field right click and select parametize
then build an expression using the spline you've already created.

There's a section in help called Example of Using Splines which goes through the process for a spring.

Messy.

Cheers

Greg Locock


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

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

 

[karachun]

Greg, thank you for response.