Analysis of trusses with different materials and cross sectional areas //ansys //latest 2018

1. Utility menu: Here you can access and adjust properties of your session, such
as file controls, listing and graphic controls.
2. Toolbar: Buttons for commonly used commands.
3. Main menu: Here you can find the processors used when analysing your
problem.
4. Graphics window: In the graphics window your model is displayed:
geometry, elements, visualisation of results and so forth.
5. Input window: You can type commands in the input window.Preprocessor
Within the preprocessor the model is set up. It usually includes a number of steps in
the following order:
• Build geometry. Depending on whether the problem geometry is one, two or
three dimensional, the geometry consists of creating lines, areas or volumes.
These geometries can then, if necessary, be used to create other geometries by
the use of boolean operations. The key idea when building the geometry like
this is to simplify the generation of the element mesh. Hence, this step is
optional but most often used. Nodes and elements can however be created
from coordinates only.
• Define materials. A material is defined by its material constants. Every
element has to be assigned a particular material.
• Generate element mesh. The problem is discretized with nodal points. The
nodes are connected to form finite elements, which together form the material
volume. Depending on the problem and the assumptions that are made, the
element type has to be determined. Common element types are truss, beam,
plate, shell and solid elements. Each element type may contain several
subtypes, e.g. 2D 4-noded solid, 3D 20-noded solid elements. Therefore, care
has to be taken when the element type is chosen.
The element mesh can in ANSYS be created in several ways. The most
common way is that it is automatically created, however more or less
controlled. For example you can specify a certain number of elements in a
specific area, or you can force the mesh generator to maintain a specific
element size within an area. Certain element shapes or sizes are not
recommended and if these limits are violated, a warning will be generated in
ANSYS. It is up to the user to create a mesh which is able to generate results
with a sufficient degree of accuracy.
Solution processor
Here you solve the problem by gathering all specified information about the problem:
• Apply loads: Boundary conditions are usually applied on nodes or elements.
The prescribed quantity can for example be force, traction, displacement,
moment, rotation. The loads may also be edited from the preprocessor in
ANSYS.
• Obtain solution: The solution to the problem can be obtainedPostprocessor
Within this part of the analysis you can for example:
• Visualize the results: For example, plot the deformed shape of the geometry
or stresses.
• List the results: It is possible to list the results as tabular listings