Strand7 Time delay of multiple forces

[cbat]

I'm trying simulate 6 forces of equal magnitude impacting a row of consectuve beams, each 1 second apart (ie like a truck impacting cross beams along the length of a bridge). I am restricted to using Strand 7, is it possible to individually delay each force in a dynamic analysis? Or is there a similar work around?

Appreciate any info, thanks!
Cam

 

[IDS]

Define the loads in different loadcases, then you can factor them all independently.

Doug Jenkins
Interactive Design Services

http://newtonexcelbach.wordpress.com/

 

[GregLocock]

Doug is right but possibly a little succinct.

In a linear structure you can add the effect of each force. So you ca add the stresses due to a force at node 1 to the stresees due to the force at node 2 with the appropriate tiem delay.

Cheers

Greg Locock


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

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[IDS]

To be a little less succinct, in Strand7, in both the linear and non-linear transient dynamic solvers you can define "Load Tables" which allow you to apply different "time tables" to each load case, so each load can be factored independently over time, which should allow you to do what you want.

Doug Jenkins
Interactive Design Services

http://newtonexcelbach.wordpress.com/

 

[cbat]

Thats a great help from all, thank you! I'll try this out tomorrow.