Help with Dynamic Analysis

[Ramone]

I have created a model in which the force on a point increses over the time of my analysis. I have modelled this by creating a number of forces which I applyat certain times. These forces move parts of the mechanism upwards against gravity.


When I run the dynamic analysis the results show the mechanism moving to a point roughly where it should settle and then return to its origional position over a period of around 2 seconds. For a 10 second analysis, the mechanism resonates back an forth in a smooth motion.


I would expect the model to remain in a position or increse in height against gravity as the force being applied is increasing with time.


Is this how Pro-E shows this effect or am I applying the forces incorrectly. Can anyone tell me how I can change this to give a more realistic result.


Thanks in anticipation

 

[Israr]

you are applying the force incorrectly.


what you should do is apply force as custom load.

 

[Ramone]

Thanks Israr,


I need to apply forces at different points from different points in time, i.e applying weights to different points of a cantilever see-saw after certain times.


Can you give me some more info on how I would do this


Thanks