When it came to the implementation of this advanced simulation tool, HMF Group turned to EDRMedeso. Thus, eight designers from HMF Group completed EDRMedeso’s ANSYS training. With the training and implementation complete, many simulation tasks have already been transferred to ANSYS. This leads Torben Wittendorff Andersen to conclude that ANSYS will most likely be the preferred tool for simulation moving forward.
“The comprehensive ANSYS training from EDRMedeso gave all of us a thorough introduction to and understanding of the possibilities and functionality in this advanced tool – and we appreciate the direct line to EDRMedeso and their skilled experts in case of support needs,” says Torben Wittendorff Andersen.
Locating potentially dangerous hotspots
HMF Group is using simulation to locate the stress peaks and hotspots that may need to be addressed. A hotspot is an area where high tension is concentrated around a smaller area and therefore potentially a weak point.
“Our products are dimensioned in relation to fatigue, so it is very important to keep track of all hotspots. Perhaps a crane can lift a given weight effortlessly the first 1,000 times, but it should be able to withstand up to +150,000 lifts depending on the type of product application, and here the simulation tool will help us tremendously with these predictions, because we can quickly identify the problematic areas where we must go deeper.”
Avoiding costly design flaws
At the very end of the development cycle, HMF Group perform a physical fatigue test on an entire crane to ensure it has the required strength. First, there is a dynamic test procedure with several thousand lifts with a lifting moment of at least 125 percent. This is followed by a 3-6-month testing period in the field, where the crane is exposed to many demanding tasks.
According to Torben Wittendorff Andersen, this is where HMF Group can save both time and money, because if there is a breakdown or any indications of a problem in the physical test, it will prolong the development cycle and thus time-to-market.
“We are occasionally experiencing problems during the physical tests, although it is less frequent. However, when it does happen, we can easily lose a month or more because a component needs to be re-engineered which is very costly. So, if we can simulate quickly and accurately how a new crane is loaded with strength, this will increase the likelihood that the crane will pass the final fatigue test. The projects we have run so far using ANSYS have been implemented faster and without design relapse. I therefore strongly believe that ANSYS will reduce the risk of design errors and thus contribute to increased profitability for HMF Group,” Torben Wittendorff Andersen concludes.
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