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Mar2-12, 08:49 AM
P: 4

I have been following this forum for some time now, but this is the first time I participate. I would appreciate if you could give me a hand in understanding the results of a finite element analysis of an automotive component we have designed.

The analysis results indicate that the stress caused by the load applied is way beyond the material yield strength and even the ultimate tensile strength. The values are 258MPa, 90MPa and 150MPa respectively. This is shown in the first image attached.
Considering this I would assume that not only the part is subjected to permanent deformation but it may also break.

However when I look at the displacement results I notice that the part only buckles 0.1mm. Second image attached. This deformation represents only 0.5% of material elongation. Knowing that the aluminium alloy we are planning to use breaks @2% elongation, does the analysis really show that the component will fail or are we just looking at a hot spot that will not cause any problems?
The part will not be subjected to any cyclic loading.

I would appreciate some feedback. Thanks for reading.

Attached Thumbnails
stress.jpg   displacement.jpg  
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