Problem Solutions

By e n Dean Updlk

Chapter 1

„P . bl. .. 1. 1 . . . . „Ll Two solid cylindrical rods Alìand [Klare .weided together at B and loaded as ro em Shown. Deîermine the magnitude of the farce P for which the lensife stress in md AB

75 mm

the midsection ofw) rod AB, (b) rod BC.

Lì Two cylindrical rods AH and BC are weided together at B and loaded as shown, Determine ille magnitude oflhe force P for which the tensiie stress in md Ab’ is twice the magnitude of the compressive Stress in rod HC'.

75

mm

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. . Probíem 1,3

Probiem 1.4

1.4 Two cylindrical rods AB and HC are welded together at B and loaded as

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p . 5 ' ' " ' ' ' "-1.5 A strain gagelocated at C 0n the surface of bone AB indicates that the average ro em ' normal stress in the bone is 3.80 MPa when the bone is subjected to two VIRSG-N

knowing that its outer diameter is 25 mm, deturmìne the inner diameter ofthe bonds |200 cross section at

C.

{Dromen-1 1.6 Two Steel plates are to be heid by means of 16»mm«dia1neter high

strength steel bolts {itling snugly inside cylindricaf brass spacers. Knowing that the average marinai stress must noi exceed 26() MPa in thc bolts and 130 MPa in the spacers, determine the outer diameter of the spacers thaï yields the most economical and safe design.

P25.

2.

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1.3 Knowing that 1h@ ceilïrai portion of link has a uniform cross-sectional

Pbelem .. '_ _1.10 Link AChas a uniform rectangular cross section 3 mm lhick and 1.2 mmwide.

- Determine the normal stress 'm the centa'aì portion ofthe Iink,

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Probl . . . .. . . . Hf?. The rigid barEFG is supported by the truss syslfzm shown. Kncnww .

em 1 '1 1 ing that the member CG is a circular rmi of 18 mm diameîßr, (femmine

Nourva Säureas. im CG.

problem 1 2 1, L?? The .rigid hat EFG is supported by the truss Syslem Shown. Deter

mine the cross»seci.ional area of member AE fÜr which the normal stress in the

member is 105 MPa,

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