Shaft calculation for safe
products from the start

Shafts They transmit torque and forces between the components of a drive system. Bending, torsion, notches, mounting conditions, and varying loads determine whether the Design can withstand the required operating conditions over the long term.

MDESIGN allows you to create geometric models of Shafts and shafts and evaluate them according to DIN 743, the FKM guideline, or ANSI. Strength analyses, deflections, bearing reactions, and critical speeds provide a solid foundation for design, approval, and technical documentation.

DIN 743 is one of the established standards for the static and dynamic design verification of Shafts and shafts. In addition to the load, it also takes into account component geometry, notch effects, surface condition, and size effects.

For relevant sections of the " Shaft ," the values of Safeties are determined for fatigue failure and yielding, as well as for stresses resulting from tension/compression, bending, and torsion. Form factors, support factors, and notch factors are incorporated into the evaluation.

This makes it possible to determine whether a cross-section is sufficiently dimensioned or whether a design change is necessary.

Steps, grooves, holes, press fits, or Gearings alter the stress distribution and must be taken into account in the correct position. The shaft geometry can therefore be designed with different cross-sections and notch shapes or imported via STEP from an existing CAD model.

Bearing locations, forces, moments, power, and rotational speeds are stored in the model. Bearing stiffnesses, self-weight, and gyroscopic effects are also available for further calculations.

MDESIGN includes standardized data sets in accordance with DIN 743-3, containing the relevant strength and elasticity parameters, to assist with material selection. Users can add their own materials and company-specific values and save them for future calculations.

This results in a computational model that integrates geometry, material, and loading into a single framework.

After the calculation, stresses, safety factors, bearing forces, moment curves, deflections, and other verification parameters are available. Their distribution along the Shaft shows which cross-sections or notches determine the Design .

Critical areas can be specifically mitigated through design changes—such as adjusting diameters, transition radii, notch geometries, or altering the bearing arrangement.

In addition to simply verifying structural strength, the results also aid in the design and comparison of different variants.

In drive technology, the reliable transmission of torque is crucial. In addition to the Shaft itself, Shaft hub connections must therefore also be designed to be reliable.

MDESIGN enables the calculation and evaluation of different connection types and integrates them directly into the overall analysis of the Shaft.

This allows for the safe design not only of the Shaft but also of the entire transmission system.