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Thermal expansions already lead to deformation of the components during welding. This can lead to components moving apart at the joining zone. The formation of this gap endangers process stability and leads to significant shape deviations. This gap formation is to be limited or prevented with a clamp device. Alternatively, tack welds are used to fix the components. With the Dynaweld welding simulation and the Free Motion Filler method developed by DynaWeld it is possible to analyze this gap formation simulatively. A selected clamping concept can thus be numerically approved in advance. It is also possible to check the draft of a tack weld concept. This means that any high consequential costs of subsequent correction interventions in production can be avoided in advance. The more advanced production planning is, [...]

Induction is an efficient method for targeted heating. Components can be heated both completely and partially. Induction heating can be used for welding, straightening, preheating or for heat treatment. We have developed a modeling method to image inductive heating to a 3D model. We use the boundary element method, which means we can do without meshing the air. That makes the application effective. With the help of induction simulation, the process (position of the inductor, duration and frequency of the induction current) can be designed and the optimal shape of the inductor can be determined. You can find a small application example in our video DynaWeld Induction:

With the new version of DynaWeld we have prettied up the appearance of the surface. In addition, the user can now choose the colors of the GUI according to his own wishes. In addition to English and German, DynaWeld is now also available in Spanish. At the customer´s request, we can now enter any language. Other functionalities: Simplified import of material data from tests, material data sheets or publications Free clamping of tools without additional knot fixings Cumulative deformations in multi-stage simulation. Deformations from several calculation stages are added up so that the total deformation can be represented from the entire production sequence.

Heavy machinery construction places special demands on the design of welded joints. Solid components with sheet thicknesses between 100 mm and 500 mm absorb the welding heat much faster than thin-walled components. The result is high cooling rates with common welding processes such as gas-shielded metal welding or submerged arc welding. Steels that can be welded in the thin sheet area can suddenly cause problems. This applies in particular to the common structural steel S355. Not every chemical composition permitted by the standard can be welded. Root pass of fillet weld of thick sheets, strength depending on the cooling rate Preheating, energy per unit length, chemical composition, conversion behavior, remaining microstructure ... these are the interdependencies between process and material. DynaWeld can use suitable analyzes to [...]

DynaWeld at the Technology Institute for Metal & Engineering GmbH (TIME) The prediction accuracy of numerical simulations can only be convincing if the models used are suitable for the physical processes and the modeling is realistic. A check can be done on the basis of welding tests. So far, one can find in the literature for verification purposes many simple components such as blind seams on sheet metal or a simple T-joint. Industry-relevant assemblies are hardly found there. DynaWeld has successfully performed simulation comparisons for many of its customers in the past, but these are confidential and shall not be made public. With a common research project, the Technology Institute for Metal & Engineering GmbH (TIME) in Wissen / Sieg, Germany, Goldak Technologies Inc. in Ottawa, Canada and [...]

INSIGHT @ Volkswagen Wreśnia 2019 was hosted by the Automotive Circle and took place in Poznan. Highlight: Visit to the new VW plant for the Crafter in Wrenia. In addition to many interesting lectures on body construction with a focus on commercial vehicles, DynaWeld is contributing to digitalization in production planning: Distortion managemnt in the design of the assembly of body in white

Meanwhile, the numerical simulation in the fields of heat treatment and welding is ready for industrial application and offers a future-oriented and innovative working area for engineers in research and practice. Intensive research has been carried out in these areas over the last few years to numerically depict the behavior of materials and components during machining The increasing interest in numerical simulation has a significant economic aspect. For a quick implementation of efficient production technologies in practice, a deeper understanding of the handling of new materials and new processing technologies is necessary today. For this purpose, current research results from the fields of heat treatment and welding will be presented. In addition, experience in the numerical simulation of heat treatment and welding processes using simulation software is reported. The [...]

DynaWeld presented its software solutions again this year at the Day of Welding Practice in Rostock. There was also the 25th anniversary of the organizer, the SLV Mecklenburg-Vorpommern. Congratulations on this!

DynaWeld spent a week with John Goldak and his team in Ottawa, Ontario, Canada. In addition to intensive expert talks, discussions were held on how welding simulation and heat treatment simulation can be used even more efficiently in the future and how small and medium-sized enterprises can also benefit from it. VrSuite offers a variety of functionalities developed by Goldak specifically for the simulation problems of welding and heat treatment. These include, among other things, special meshing automatisms for welds. Multi-layer welds with multiple passes per layer can be automatically modeled using WPS data. With the new Goldak heat source WeldPoolQS the cross-sectional geometry of the individual weld pass and their heat input is calculated directly from the process parameters and transferred to the global simulation model. [...]