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Massless links and constraints

Experimenter
Experimenter

I am trying to perform a dynamic simulation on double wishbone and have all the forces. I have the geometry as line model with no masses.

 

1. How to make links massless in Dynamic study(I have all the forces so need need for mass and gravity).

2. How to implement following constraints: Two-Body Position driver, DISTance driver, Joint position driver. All i see is I neeed to have a link or joint between 2 bodies/links in order to create a driver constraint.

3. There is no bracket joint! how can I have one! 

1 REPLY

Re: Massless links and constraints

Siemens Genius Siemens Genius
Siemens Genius

Please let know what type of analysis. Can you explain and send pictures?

In the meantime, some answers to your questions:

1. How to make links massless in Dynamic study(I have all the forces so need need for mass and gravity)

A: Input dumb values (1s), use gravity = 0.

2. How to implement following constraints: Two-Body Position driver, DISTance driver, Joint position driver. All i see is I neeed to have a link or joint between 2 bodies/links in order to create a driver constraint.

A: Version 12: Link coupler
https://docs.plm.automation.siemens.com/tdoc/nx/12/nx_help#uid:index_whatsnew:xid1306881:xid1306896:...

3. There is no bracket joint! how can I have one!

A: Version 12: Fixed Joint with Excluded Constraints

 

Kind regards,

Gilles

Gilles Dubourg
Simcenter 3D
Siemens Digital Industry Software
gilles.dubourg@siemens.com
www.siemens.com/plm