Design Water Bottle in SolidWorks

A: A sounds pedantic; mold finishes do live on part drawings in plastics. C might be true in some markets, but nothing here proves it. D is cosmetic. B is where the physics bite — draft on what should be a controlled sealing surface shifts contact stress and shows up later as marginal leak results.

A: A feels intuitive but drops section modulus where hoop stress is highest. C is tempting for schedules, but higher temperature moves you further into the creep regime and muddies comparison. D misses that functional failure comes long before burst. B addresses the local stress riser that FEA usually flags red in these bottles.

A: A comes straight from σ = p·r/t, and the geometry fits the assumption. B sneaks in material behavior to dodge arithmetic — redistribution doesn't halve basic membrane stress. C doubles radius by mistake. D applies a safety factor before you've even checked allowable, a classic spreadsheet habit.

A: A assumes the CAD is gospel, which is how old assumptions linger. C ignores that nominal values drive stress, not just tolerance bands. D treats a symptom. B forces you to reconcile weight, stiffness, and stress with what was actually specified.

A: A follows the CMM program, not the risk. C wastes time if you don't know why it failed. D drops geometry that drives contact pressure. B lines up with the failure physics — seal geometry first, then section properties.

A: A is a common sales pitch. C sounds tidy but ignores load paths. D assumes one test envelopes the other. B reflects field reality — seals and creep care about sustained stress, not milliseconds of impact.

A: A hides behind rounding; safety factors aren't fuzzy. C ignores that tests are trending worse. D waits for failure instead of preventing it. B respects the original design intent — that 2 wasn't decoration.

A: A is how cracks start. C waves away local effects that actually drive failure. D might be true, but here the geometry mismatch is explicit. B ties the red FEA plot back to the drawing reality.

A: A ignores physics trending the wrong way. B is emotionally satisfying but not proportional. D games the system. C is uncomfortable but correct — the data are whispering before they start shouting.