stress analysis on moving object?

[mb26]

hello, as u can probably figure this isan engineeringproject thing.


i have a design for a spring-powered model dragster. for stress analysis on the body (using cosmosworks) basically there is a force (from the tension from the spring) 'inwards' from a connection from the back, and from the front.


i'm not sure what to do with restraints however?.. ie it wont be restrained; it will move. i tried not restraining it, and restraining it only in the vertical plane, but it was having none of it.


any ideas? (asap please! )

 

[mb26]

ie... if its restrained then the stresses on it will be different? and restrain the front, or front and back?..

both being from a tension, the forces will be the same anyway so, as far as the model of the body is concerned (ie no axles etc) it shouldn't move anyway..

 

[blazej79]

Hi,


analyse the worst scenario case. Spring pushing drugster but it not moving forward ( not working chassis ).