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Does chassis rigidity diminish over time / age ? 1
- Thread starter JasonCSBB
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MikeHalloran
Mechanical
Sure; rivets loosen, welds crack, corrosion reduces section moduli, etc.
Mike Halloran
Pembroke Pines, FL, USA
Mike Halloran
Pembroke Pines, FL, USA
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- Thread starter
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MikeHalloran
Mechanical
No.
Mike Halloran
Pembroke Pines, FL, USA
Mike Halloran
Pembroke Pines, FL, USA
- Thread starter
- #8
So some cars do break welds or sheetmetal - the BMW "clown shoe" Z3 coupe rear shock towers comes to mind.
For cars that don't outright break stuff, do spot welds degrade or microcrack or fatigue or something, over time, from age and normal use?
For cars that don't outright break stuff, do spot welds degrade or microcrack or fatigue or something, over time, from age and normal use?
MikeHalloran
Mechanical
I will amend my earlier answer. Spot welds do have a finite fatigue life. Which means that after some finite time, even if never subjected to abnormal stresses, they will break. The finite time is normally longer than the car is expected to last, and far longer than its warranty.
"Normal use" does not include resurrecting a frame or car from a junkyard or chicken coop and putting it back in service.
What are you actually trying to learn here?
Mike Halloran
Pembroke Pines, FL, USA
"Normal use" does not include resurrecting a frame or car from a junkyard or chicken coop and putting it back in service.
What are you actually trying to learn here?
Mike Halloran
Pembroke Pines, FL, USA
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