Moving load

Hello everyone!!

I'm trying to model a moving load on a long beam; to be more precise, I have to model a moving load with a given speed that I can change in order to perform a sensitivity analisys (speed of the moving load vs. deformed sheped beam).

I suppose I have to use DYNA_NON_LINE and 'INST' variable to take into account the fact that the force change displacement during time (the distance from one loading node to the next one is 10 mm).

I've made two lists, one for 'INST' (which is, if I'm not wrong, time in seconds) and one for x-position of all the loading nodes, but I'm not

able to create the relation (and so the right script) between 'INST' and x-position of loading nodes and assign it to the load in order to

make it moves along the beam in time (at a given speed).

Is it possibile in Code_Aster to model what I've described above or I'm wasting time?

If it's possible, could someone please give me an hand, I need for my Master Thesis!!

Thank you in advance,

G.

Sorry....wrong section!!!


G.

Hello Claws,

thank you very much!! I took a look at JPA's book (I think the axample is at chapter 11 of the newest version of JPA's book); sorry but I'm new in Code Aster so what I've understand from the example is that I have to create a list with all the loads (forces, each of them acting on a single node) and a list of coefficients (1,0,0,0,0, for the initial instant) in order to "switch on-switch-off" the load depending on time (list of instants). If it is so, do you think this loadings switching-on/off will take into account also the inertia of the beam element on which the forces are acting (using of course DYNA_NON_LINE module)?

Thank you very much in advance!!

G.