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Showing results for tags 'negative'.
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Hello, I have a problem with decreasing negative energy error. I read the reason for this could be energy dissipation and the total error should not exceed 5-10% for a good model. But in my case it reaches about -80 till -90% which indicates a wrong setup. The model setup contains two steel rods with an elastomer buffer in between. I checked if the reason could be the material definition of the elastomer, therefore I assigned material parameters for steel to the buffer but the error is still decreasing like before. Additionally I unchecked the status of ENG_DAMP card to see if that's causing the error but it changed nothing either. I don't know what else to check, so I'd be very grateful if you have a look at my model. Test_A_0000.out Test_A_0000.rad Test_A_0001.out
Hello guys, I want to morph a model but after moving my handles there are always some negative jacobians/folded elements. Also after a small movement (about 1-2mm) there are some folded elements (sometimes only 2 folded elements). The size of my model is around 150mm * 250mm and the element size in the moprhing region is around 0.5mm - 5mm. Is there any options to avoid folded elements? Maybe meshing with smaller elements or bigger elements or try some various options in the "morph" subpanel? It would be great if anybody can help me!