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Maybe bonded contacts aren’t appropriate, but the other contacts. Since the X tubes are not initially touching, but can be a source of contact during deformation. Apply changes to Top and Top 30, too if it ends up reducing stresses.
More updated images 2021.10.01
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Top
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Very strange behaviour with a small spike in stress.
We could maybe fix it by adjusting the position of the horizontal or vertical angled tube.
More updated images 2021.10.01
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Top 30 Wall
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More updated images 2021.10.01
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Combined Loading (Roll-Over) - Incomplete
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