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Computer-aided design and optimization at Bionika

Digital simulation tools have been used and proven solutions for decades, enabling you to get an idea of the processes that are taking place during the initial phase of the product life cycle. Finite element systems make it possible to control the products previously, eliminate unnecessary prototype production and at the same time improve quality and reduce costs.

In Bionika, we use simulations to evaluate different plan alternatives, perform behavioral experiments, and have a look at the product’s performance in order to accelerate innovation. The simulation is part of our product development process. In this case, the capacity of the Speedy implant was examined. The software displays the voltage differences in a spectacular colour map, which is both impressive and highly informative during the product optimization. The simulations were performed using several titanium alloys and the geometry was modified as well. The software allows you to easily detect voltage traps and dangerous cross-sections. Due to the voltage diagrams, we often notice construction defects over which we would otherwise overlook.

Calculation model

We design computational models for scaling products. Based on these, we estimate the condition characteristics (eg torque loads) derived from external influences (eg from constant and useful loads) and determine their limitations (eg torque resistance).

Computing models have more or less neglect and simplification for mathematical manageability, affecting the reliability of the model.

Maximum shear stress

Shear stress or sliding voltage is a mechanical tension that is parallel to the sheets of the imaginary cut-out section of the material during load examinations. Its maximum value wakes up due to tightening, on the implant’s pleated head.

Maximum main voltage

The maximum voltage is generated at the part of the implant where the shear stress is highest. Based on the colour maps illustrating the tensions, the dimensions can be stated, for which emphasis should be placed on during designing.

The software can be used to determine the voltage values generated by bending the implant and the degree of deformation. The figure illustrates the degree of deflection from which the angle of the implant’s head and the radius of curvature can be calculated. Calculation of voltage values during bending is not negligible because it is based on the reaction forces in the jaw bones.

All-in-one digital simulation tools enable the early integration of the simulation into the product development process, allowing you to explore multiple design options and make better decisions. The digital simulation is applied:

  • for performing linear and non-linear calculations;
  • for static and dynamic tests and kinematic analyzes;
  • In the planning process, to integrate various engineering knowledge and calculations;
  • for optimizing the carrying capacity of our products;
  • for performing ergonomic tests.

Article information

●  Flexible aesthetics head shape

●  Platform switching with RadialFix grooves under the flexible neck

●  The radius design of the thread groove is a solution adjusted to the spongy bone structure

●  Cycloid thread profile

●  High thread pitch

●  High thread depth

●Conical, self-compressional thread adjusted to the natural tooth root

●  Thread edges are not cutting edges, they have a bone compression effect for greater stability

●  Thin, pointed, conical ending