KISSsoft Tutorial-Shaft Analysis

1 Starting KISSsoft

1.1 Starting the software

Once you have installed and activated KISSsoft either as a test or licensed version, follow these steps to call the KISSsoft system. Usually you start the program by clicking "Start?Program Files?KISSsoft 03-2011?KISSsoft". This opens the following KISSsoft user interface:

Figure 1.1 Starting KISSsoft, initial window

1.2 Selecting a calculation

In the Modules tree window, select the "Modules" tab to call the calculation for shafts:

Figure 1.2 Selecting the "Shaft" calculation module under Shaft-Hub-Connections

2 Analyzing a Shaft

2.1 Task, opening the example calculation

You are to mathematically investigate a shaft that has already been modeled, see Figure 2.1.

The following criteria are relevant:

- Shaft deformation

- Bending critical speed

- Static and fatigue strength

Figure 2.1 Shaft to be analyzed

The shaft is driven by a motor attached to the coupling. The nominal power is 75W at a speed

of 980 rpm. This power is taken from the system at the helical gear.

This shaft is present in KISSsoft as an example file called Shafts 1. W10. You can either open

this file directly in the help index window by double-clicking the left-hand mouse button on the

"Examples" tab or by selecting "File"-"Open" by clicking on the file in the appropriate KISSsoft subdirectory, ?\example, with "Open".

Figure 2.2 Opening the example calculation

Click the "Shaft editor" tab to view the tab as shown in Figure 2.1.

Figure 2.3 Opened shaft calculation

You will find details of how to generate a shaft model with the help of the graphical shaft data

input interface in KISSsoft Tutorial No. 006.

When you open the shaft file the system performs an initial calculation using the settings you entered. Once you have finished defining the shaft, either click in the menu bar (or press F5) to calculate all the shaft-specific values. The results are shown either as a graphic or as a

table of values.

2.2 Results

All important results are listed in the Results tab. To open this window, click the icon in the upper right-hand corner. You can then resize the window as necessary.

Figure 2.4 Enlarged display of results

2.3 Deformation analysis

In the "Basic data" tab, click the drop-down list to open the "Strength" group. This is where you input how the gears modeled on the shaft are to be taken into account in the calculation:

- Ignore the mass and stiffness of the gears on the shaft

- Consider gears as masses only (the gear is mounted loosely on the shaft and, although it transfers its own weight, along with the external loads to the shaft, it does not stiffen the shaft)

- Consider gears as mass and as stiffness (the gear is attached rigidly to the shaft and forms a single unit with the shaft)

Figure 2.5 How gears are considered

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