Mechanical Engineering Made Simple24 Aug

Why do we keep torquing the bolt when the real load is carried by friction between the plates?

Discover How Bolts Rivets and Welds Actually Hold Structures Together — Bolts generate clamping force through controlled preload, locking parts by friction and tensile stress so the joint resists shear without the bolt itself carrying the primary load. Rivets are permanent fasteners driven or upset into place; once deformed they work almost entirely in shear and cannot be removed without destruction. Welds fuse base metals into a continuous joint by melting and solidifying, transferring load through the weld metal and heat-affected zone with strength governed by throat thickness and residual stress. Each method has distinct installation physics, inspection requirements, and failure modes—bolts can loosen under vibration, rivets crack under cyclic tension, welds fail from incomplete fusion or hydrogen cracking—so choosing the right one depends on whether the joint must be serviceable, permanent, or load-critical.

#Bolts #Rivets #Welds #MechanicalFasteners #ClampingForce #Preload #ShearJoints #WeldStrength #HeatAffectedZone #StructuralJoints #DesignForAssembly #FastenerFailure #ShopFloorEngineering #MechanicalEngineeringMadeSimple

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Episoder(215)

Physics of the Invisible Ocean

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Why production tanks ruin lab chemistry - How to scale-up your mixer batch.

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Numerical Methods for Predicting Structural Stress

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28 Aug 1h 4min

Fixing Misaligned Shafts and Destructive Vibrations

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27 Aug 45min

Engineering Systems to Survive Mechanical Shock - The Structure Remembers.

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26 Aug 31min

Should We Trust Mathcad? - Mathematical Realities That Dictate Physical Design.

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25 Aug 33min

How Engineers Design Safely With Imperfect Materials

Discover How Engineers Design Safely With Imperfect Materials — the reality that every real material carries defects, inclusions, property scatter, and manufacturing variation that perfect textbook pr...

19 Aug 1h 5min