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prebended bracket, what type of analyssis to perform? |
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August 29, 2018, 02:57 |
prebended bracket, what type of analyssis to perform?
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#1 |
Senior Member
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Hi all,
The object in the attached image represents a fixing bracket, used to fix the products to a wooden pallet, during road transport. I have to study a new type of steel bracket and what I would like to achieve is a folded bracket which, once fixed, it bends and prearranges a downward preload on the adjustable feet, ensuring that these are kept fixed on the wooden pallet. The question is: I believe that a linear static analysis is not the correct type of analysis, what kind of analysis should I conduct? |
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August 29, 2018, 04:33 |
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#2 |
Member
Join Date: Mar 2018
Posts: 56
Rep Power: 8 |
hello.
first step-static nonlinear analysis bracket will be preloaded second step-transient nonlinear analysis (road loads) if i understand you correct you have contact interaction, preload bolt and dynamic road loads. |
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August 29, 2018, 22:51 |
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#3 |
Member
Join Date: Jan 2015
Posts: 62
Rep Power: 11 |
If I understand this correctly, I would make the edge of the “not fixed” side have a “compression only support” or just set the vertical displacement on that edge to zero but allow freedom in the other two directions.
Then I would put a fixed displacement on the other edges and the area where the bolt heads touch equal to the uncompressed height difference between the free side and the bolted down side. |
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August 30, 2018, 22:05 |
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#4 | ||
Senior Member
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Hi,
thank you both; I think I should perform a static non linear analysis only. Quote:
Quote:
Then you would put a fixed displacement, but I can't properly understad where and how you would set it. I'm thinking to set this BC on the corner of the "bended edges", could it be right? I could also use a symmetric model and put a symmetric BC on the longitudinal axis, Should it be a proper definition for this case, even if it keeps a degree of freedom?(sliding) I also think that non linearity should comes for the material, as for this loading state the load (displacement) keeps the same direction, isn't it? |
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