Recent content by patrickv

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    Stress at c'sink holes of enclosed box with internal pressure

    I have an issue I'm not quite sure how to approach. A customer is requesting that we prove that our battery pack chassis will not burst or deform if additional gases are introduced inside the enclosed box (the batteries could vent). The chassis is assumed to be a sealed .05" thick 5052 AL...
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    Finding Stress Concentration Factor K for Chamfered Joints

    Hello, I have a rod of two different diameters and I'm trying to find the stress concentration at the chamfer between the two diameters. I understand how to find the stress concentration factor, K, if the joint was a fillet (using r/d and D/d to find K in the appropriate table). However I can't...
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    Problem calculating stress from torsion in mounting bolts - PLEASE help.

    Mech. Engineer: Thank you so much! It's been a while since I've had to run numbers like this and everything you said clicked into place, aided by the great example Garvin supplied. Completely makes sense now where I was thinking about it wrong and how to go about solving it. The equivalent...
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    Problem calculating stress from torsion in mounting bolts - PLEASE help.

    Thank you for the input, however I am not concerned in the thread or it's engagement into the mounting surface. I know the 1/4-28 holds fine (based on previous shake tests to a similar product). The issue is that the mounting fastener needed the diameter of the shank above the thread reduced and...
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    Problem calculating stress from torsion in mounting bolts - PLEASE help.

    Hello all, I need some desperate help. I have a product that is mounted on four corners with 1/4-28 bolts with a shank diameter of .25. The product is mounted to a vibe table and shaken at 20g in each of the three axis. I am currently analyzing the stresses induced in the fasteners in order to...
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