RE: RAM DA - Trouble getting GetMemberForces to work

Karthik Madhur — Mon, 23 Mar 2020 16:42:01 GMT

Eric, I have developed a similar code for moments, I have used the dLoc to locate the moments at mid-span of the beam. But sometimes the maximum moment is somewhere else. Is it possible to extract the maximum moment?

RE: RAM DA - Trouble getting GetMemberForces to work

Eric Helmueller — Fri, 14 Sep 2018 15:35:07 GMT

The DataAccess manual installs with RAM Structural System under the Manuals folder. Take a look at the GetMemberForces method in the IForces2 interface.

startMajShear is a return argument for the method. This is a COM code to see if the method call passes or fails for some reason.
lMemberID is an input argument. Make sure you are passing in a valid member unique ID.
lAnalysisCaseID is an input arguement. Make sure you are passing in a valid analysis case ID.
bApplyLLReduction is an input arguement. Make sure you are passing in 0 or 1.
r1 should be changed to test since the last argument is a return argument with type SForce.
After test is set by the method, then you can use the command r1 = test.dVx_maj

You appear to be looking for RAM Gravity forces for steel beams. I prefer to use the GetGravBeamForcesLeftAt method in the IForces1 interface. The attached Excel VBA example uses that method, so use it as a reference. The macro finds gravity steel beam reactions a little differently than RAM Steel Beam. When there are cantilever beams, it reports the reaction on both sides of the support rather than a single reaction at the support.

.communities.bentley.com/.../DA-Gravity-Steel-Beam-Reactions.xls