Assists in solving

1

Loosening problems

Assists in solving problems involving the loosening of nuts and bolts by establishing what is needed to eliminate the condition that causes such loosening.

Read more
2

Fatigue problems

Fatigue is a common cause of failure in many products, including bolts. The program will establish the likelyhood of bolt fatigue occurring.

Read more
3

Thread Stripping

Thread stripping is a shear failure of an internal or external thread. The program will establish the forces needed to cause thread stripping.

Read more
4

Tightening issues

The program will determine the tightening torque and whether that torque will provide sufficient bolt preload for the application.

Read more

Program Screen Images

Presented below are screenshots from the program explaining how easy it is to complete an analysis using BOLTCALC.

The program is designed for ease of use and fully utilizes the Windows interface.

From the menu on the main form, other forms such as the Joint analysis Data Entry Form can be viewed and edited. The minimum amount of data is required to be entered on this form for the program to provide an estimate of the bolt size required for an application.

Once all the necessary data has been entered, the program will compute and display the results. The program will also display a view of the joint that can be useful for data checking. Any of the drawings and graphs produced can be printed out or exported as graphics files.

The graphics assist in understanding the results and deciding what, if any, action to take in resolving a problem.

Features

Metric or inch based units

The user can select either metric threads and units or inch based threads and units.

Thread Databases

The program accesses databases, supplied with the program, giving thread and fastener dimensions. There are metric and inch thread databases that allows a user to select a thread size and all the relevant information is retrieved from the database regarding thread tolerances etc.

Bolt Strength Databases

The program accesses databases, supplied with the program, giving details about strength grades and property classes for both metric and inch threads. Again the user selects a strength grade and all the relevant properties for that grade will be used in the calculations.

Use of Graphics

The program presents graphical output of the calculations showing the joint diagram, preload requirement and other charts. The program also presents a view of the joint based upon the data entered that is useful for checking purposes.

Advantages

Bolt/Nut Loosening

The program can assist in solving bolt/nut loosening problems by helping to establish what is the root cause.

Fatigue Problems

Fatigue failure of a threaded fastener can be a significant problem. BOLTCALC assists in solving such problems by establishing the if the bolt preload is sufficient and determining the magnitude of the alternating stress in the thread.

Thread Stripping Problems

Thread stripping is a shear failure of an internal or external thread. The program will establish the forces needed to cause thread stripping.

BOLTCALC

Image 1

The program was developed to allow engineers to quickly solve a range of bolting problems without the detailed technical and mathematical knowledge that would otherwise be required.ā€¯

Bill Eccles
Bolt  Science