• Ram Element - Assigning load in-plane of an Area

    The idea is to emulate the seismic force generated by the mass of a diaphragm. Surface loads or pressures on Areas are typically normal to the surface. Is there a way to assign the surface loads or pressures in the plane of said Areas? Or do I need to…

  • Complex Reinforcing Steel in Shells

    I am building an Elements model to analyze and existing structure, specifically a concrete dome. Based on the existing drawings (which are from 1940), there is some intricate reinforcing detailed within the structure. There are reinforcing hoops which…

  • Drilling moments

    Hi, I would like to modify the shell properties in my FEM model in order not to obtain Mxy efforts. I would like to solve my structure by forcing it to work with just the principal directions. Other softwares like CUBUS AG allows to activate the option…

  • Ram Elements - Variable Pressure on Shells

    I have a concrete wall supported by a concrete structural slab (similar to a headwall over a box culvert). The structural slab is irregular shaped and has unique supports which is why I am modeling both concrete elements as shells. The structural slab…

  • RE: Node spacing and Flexural reinforcement of a shell

    In plate or shell analysis using finite element methods you are bound to get stress concentrations at the supports or point load locations. When the mesh is small, those concentrations tend to be more pronounced, and I would not recommend designing to…

  • Node spacing and Flexural reinforcement of a shell

    Hi I modeled a concrete shell in Ram Elements with applied loads at two nodes and several of supporting nodes below the shell. the purpose is to determine the amount of flexural reinforcement required. I am getting different amount of required steel…

  • Ram Elements vs Risa 3D vs spMats

    I'm trying to help another engineer in my office determine forces in some footings using Risa 3D. He isn't comfortable with the results and wanted me to do a comparison on a simple dummy model using Ram Elements and spMats to verify that each program…

  • RE: Distributed Reactions on the Beams?

    Check our shells FAQ: It explains in the section "Why are the corner node reactions less than the applied load?" when the program will automatically support a meshed edge and when it will only support the corners.

  • RE: Shell Segmentation Issue- Ram Elements

    If you have items quite close together that must be meshed to (nodes, edges of shells, beams) try spreading them out a little bit more. Another tip is to break the model into parts and see what you can mesh, and what you can't in order to isolate the…

  • Re: RAM Elements Phantom Reactions

    In the Shells Spreadsheet, on the sheet for "Intermediate Supports", make sure that the "Only at ends" setting is checked for all these shells. Or, to eliminate further meshing altogether, go to Process - Analyze and on the “Finite element model” tab…

  • RE: RAM Elements Stiffened Plate Design

    According to the program manual, Env merges results of all combinations into an envelope or range, and Max then filters out any negative values:

  • RE: For RAM Elements: Can a Pressure Load be applied to a rectangular section of a Shell Element?

    You could always mesh the shells into small enough pieces so that your pressure load approach would work. Alternatively you can add nodes and apply loads to nodes. Tthe nodes will automatically mesh to the slab if they are in the slab plane, see this…

  • Re: ram elements - shells

    Yes, you can apply a nodal load anywhere on the surface of the shell and that load will be resisted by the meshed elements of the shell. All that is required is to add a node at the location of the load. If the load is close to the edge, put the node…

  • RAM - Elements FEM Node Instability - Shells

    Here is the current situation: Elevated slab supported by columns. The columns are located on the interior of the elevated slab so the edges cantilever. The slab is in the shape of an octagon. Steps: Create large shell in shape of octagon…

  • Re: Tank Foundation - Modeling Choices

    You can access Ram Elements manual from the help ? or from the Windows Start menu - All Programs - Bentley Engineering - Ram Elements - Manuals. It's not exactly like the Concept manual, however. In Elements a member can have line loads on it that…
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