Tcl script for summation of loads and moments at specific point

User: "Vladimir Gantovnik_21974"
Altair Community Member
Updated by Vladimir Gantovnik_21974

Hi Engineers! I have a question: how do you write a script that will give values of summation of forces and moments at the selected point. For example, I have a surface (wing) loaded by pressure (PLOAD4), and I want to know the resulting shear forces, bending moment, and torsion moment at the root of the wing.  In HyperMesh GUI, I see Bcs/Check/Loads Summation, but I want to have a tcl script.

Thank you!

 

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    User: "Adriano_Koga"
    Altair Employee
    Accepted Answer
    Updated by Adriano_Koga

    Hi, Adriano! Thank you, but 1) if I need a tcl script, when I need a tcl script. The function will be part of a larger tcl code. Is it possible to use that FBD tool you suggested in tcl - probably not? 2) "some TCL scripting on your own, taking a look at some tutorials, etc." Common, I am a good tcl hypermesh programmer :) So, unfortunately, both of your suggestions are useless :) 

    Ok. So the question was, do we have a tcl function in API that will make a summation of PLOAD4 pressure loads and moments at the given node? 

    If there is no such function, how can I get the value of the PLOAD4 card at the given element? We know how to get the area of the given area, but what about the applied pressure?

    #get area of element 23 *createmark elements 1 23 set masscalc [hm_getmass elems 1] #calculate area of element set area [lindex $masscalc 2] puts $area

    Thank you!

    I'd say FBD tools would be your solution here, but i don't know if it is possible to call these in batch...

     

    Now, concerning your specific questions:

    you could use hm_getvalue to retrieve these values mcuh easily, and for many items at once.

     

    something like:

     

    hm_getvalue elems user_ids=${elems_list} dataname=area

     

    hm_getvalue loads user_ids=${loads_list} dataname=facearea

    hm_getvalue loads user_ids=${loads_list} dataname=magnitude

     

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