KISSsoft Tutorial-Compression Springs as Specified in EN 13906

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 compression springs:

Figure 1.2 Selecting springs, compression springs.

2 Analyzing Compression Springs

2.1 Task

To analyze a cold formed compression spring 4 x 40 x 235 made of spring steel. Search for this

data:

?

This tutorial then describes how you input the following data:

Table 2.2 Operating data.

2.2 Inputting operating data

As shown below, you can input operating data directly in the input window. Here you can input

either the forces or the ways.

Figure 2.1 Input window, "Operating data" group.

The types of support are displayed in a help graphic that you open by clickingnext to the

Support field. The support coefficient v is used for calculating the buckling spring travel sk. If the required level of buckling safety is not achieved, the spring must be led, otherwise it will buckle.

If the spring must be led, the KISSsoft system issues a warning message when you perform

the calculation to inform you of this fact.

Figure 2.2 Warning shown if the spring will buckle and must be led.

Figure 2.3 Types of support with the corresponding support coefficients.

2.3 Inputting the geometry and selecting materials

The KISSsoft database includes a wide range of different compression springs, all of which

correspond to the specifications in DIN 2098, supplementary sheet 1. You can select the spring

you require directly from this list. This example uses a spring selected from this list.

However, if the spring you require is not present, simply select "Own Input" and input your own parameters for a spring. You will find more detailed information about this below.

To find a suitable spring, first click "Update". The system now calculates and displays values

that match your input, such as spring travel, spring forces. This helps you make the best possible choice.

Click the right-hand mouse button in the spring selection list to determine which values are to be displayed.

Figure 2.4 Input window, "Geometry" group - spring selection.

You can then either select or input the shape of the spring ends, the manufacturing method and

the tolerances in the area below the table.

Figure 2.5 Clicking the right-hand mouse button to select the values to be displayed.

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