VisualAnalysis automates the design of steel, wood, concrete, aluminum, and cold-formed beams, columns, and framing for anything from simple members to complete, complex structures.
Tutorial 8 Masonry Wall Project Description: In this example a masonry shear wall will be analyzed for lateral loading due to diaphragm action. The wall will be modeled by a mesh of plate elements.
FEATURES: Generate Standard Rectangular Mesh Load Case Combo. Results Report Setting Up the Project: When you start up VA, you are presented with the VisualAnalysis Startup Wizard. The wizard presents you with a number of options. We want to start fresh with a new project, so choose the “Start a New project” radio button and click Finish. VisualAnalysis Startup Wizard VisualAnalysis Tutorial 8: Masonry Wall Tutorial Examples.
1 you can adjust plate sizes by simply selecting and moving a node to grid points with your cursor. You are brought to the Structure Title Information dialog. Enter a length. Editing the Generated Model: The mesh we generated must now be edited to model the windows and door. And openings are of different geometries than what is easily adjusted for with square plate elements. Choose Plane Frame from the list of available structure types and click Next.
Note: You could add a masonry material to the database. In the Automatic Generation dialog choose the “No. Materials are added by choosing the “” option from the Source drop down under Material in the Modilfy tab of the Project Manager when a member or plate element is selected. Enter “Masonry Wall” for the title. I’d prefer to create my model from scratch” radio button and click Finish. Support the wall by making all of the bottom nodes pins. 2.
Tutorial Examples VisualAnalysis Tutorial 8: Masonry Wall. Make the wall 8 in thick and specify the material as 3000 psi concrete.0). You are brought to the Structure Type dialog. Specify the mesh type as Rectangular and click Next. Ft-lb” from the Units drop down box and click Next to move on to the next dialog.
An empty 2D frame model is created for you.After finishing the startup wizard. This will also change the shape of the plate.
The origin can remain at the default of (0.S. Click Next and you will be prompted for the number of elements in each direction. Of 50 ft and a width. Simply delete the plate elements and nodes where the openings are to be placed.
Modeling the Structure: Select Model Generate Standard and from the dialog select Quadrilateral mesh under the Plates heading. Enter 25 elements along the length and 10 elements along the width.
Note: If you are modeling a shear wall with plate elements. The location of the diaphragm is at the bottom of the parapet wall.
Select Analyze Check Model for Errors to make sure there are no problems. We should set our analysis options.Loading the Structure: If they were not created automatically. Therefore.700 lbs. Go to Analyze Analysis Options and make sure the Calculate dynamic mode shapes option is unchecked. We should check it for errors before setting the analysis options and actually analyzing.2D+1. Notice the increased accuracy of the model.
Create an equation case combining the service cases as 1. Create a Wind +X loads service case as well as a Dead loads service case and include the structure self-weight in the Dead loads case. Analysis and Results: Now that we have our model created and loaded. Now select Analyze Analyze Now or click the lightning bolt button on the toolbar. Apply a 950 lb nodal load at each node that is on the level of the diaphragm in the Wind +X loads service case.6W. Try messing around with which results type is plotted using the “Results” drop-down box under plates in the Filter tab of the Project Manager in the result view.
The total diaphragm load is 24. Try splitting each plate into four smaller plates. With a good model. Tau-XY for equation case 1.
VisualAnalysis Tutorial 8: Masonry Wall Tutorial Examples. 3. Change the Static Analysis setting to Perform 1st order analysis only if it isn’t already set this way. Additional vertical loads could be added to account for joists connecting into the wall. Notice that both overturning and shear can be checked using this model.6W.2D + 1. Note: When the mesh is refined. You should also make sure all of the nodes at the base are pinned.
4. Tutorial Examples VisualAnalysis Tutorial 8: Masonry Wall. You should edit the nodal loads applying 484. We would like to determine the total shear force through the section A-A shown. Select the plates that go through this section then create a report of Plate Local Stresses.3 lb per node at the 16 ft level. This will give more accurate results.
2.95 VisualAnalysis Tutorial 8: Masonry Wall Tutorial Examples. 5. For this example we will use the stresses at the plate's centroid location.2 τ xy (psi) A (in2) 96 96 96 96 V (lb) 3859.32 lbs 40.Using the following equation you can determine the shear force in a plate element and then sum these forces.12 2332.
V = ∑τ xy. A where V = Shear Force τ xy = Shear stress (From VA output above) A = Cross-sectional plate area = (plate width).(wall thickness) = 12 in. 8 in = 96 in2 Plate # P96.30 19.2 P96.2.1.20 29. This will give the total shear through the section in question.47 24.936.1.80 1915.20 Vtotal =.2 P106.2 P106.