Hallo everyone and thank you in advance for the help and the advices you will give me!!
I'm a new STAAD PRO user, I have modeled a 3 floors beam structure, on the top floor of this structure there is a filter house. The structure is loaded by some equipments on the lower floors and accelerations in the main directions, I've created the loads due to the equipment and the loads due to the accelerations applied and I've combined them using the load combinations.
The customer asked me not to model the filter house but to use a single node, placed in the filter house CoG connected to some beams on the top floor in order to apply in the node the force for each load case and get on the structure the sollicitations due to the filter house.
I can't find how to connect a node to many others in order to pass the loads from the node with the load on it to the other nodes, I've read something about the master/slaves nodes but I've not found any description on how to do it step by step.
Could anyone please help me?
Thanks a lot.
Hi,
To ensure the load transfer from point of application, you need to provide the proper connectivity. If the load will be applied to the single node of the floor plate - the proper meshing of the plate must be done (hewever applying nodal plate lode will cause stress concentration).
You may also refer to this topic regarding master slave specification:
communities.bentley.com/.../190318.aspx
Thank you for the link AndrejLogunov, so can I set the master/slave nodes only from the input command file? Is it possilbe to set the master/slave nodes from the user interface instead of the command file?
I have no plates, I have only the beam structure. I have to perform a static analysis to check the beams for stress and deflection.
My idea is:
1) link the node placed in the CoG of the filter house with the nodes at the ends of the beams where the filter house lay on.
2) put on the node placed in the CoG of the filter house the Mg force due to the mass of the Filter house and the force due to the product (mass of the filter house * acceleration due to the single load case).
Is it possible?
Hi Clover,
Yes, both ways are possible in STAAD.Pro. In the first approach you'll probably use master-slave spec. which can be applied per GUI (per General-Spec-Node Specification dialogue).
Regards,
Andrej
Answer Verified By: Sara Gaggioli