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ksebo

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About ksebo

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  1. Hi, I'm currently experimenting with different connection types to simulate adhesive bonds. I want to find the best way to analyze large scale bonded shell models. So far I've been examined different options for area connectors, such as: shell gap, mid thickness, etc. The problem I have is that when I increase the adhesive thickness I get some incorrect results. Up to 3 mm in thickness, all the results seem acceptable, but with 5 mm and 10 mm thickness it looks false. More details: I use Optistruct, and running a Linear Static analysis The adhesive layer seems too rigid, although I use the real parameters of the glue. It seems like the glue is trying to maintain its position (perpendicular) to the sheet, and isn't deforming enough. My question is: is there any rule regarding the range that a connector type can be used in? (For example: area connector in shell gap mode is good for adhesive layers in the 1-3 mm range.) Or in other words, is there a limit thickness where adhesive area connectors can't be used anymore? I attached the model I was using. Also, what modelling method can you suggest to analyse large scale shell models with adhesives (for example: a boat)? Thanks, Sebo kiskocka_slp_9.hm
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