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020004 0204052001

30 10 0
10 20 0| 2
0 0 10

Material properties are: yield stress in tension = 200MPa, Ultimate stress in
tension = 310 MPa and poisons ratio = 0.3.

1. Find principle stresses.

11. _ Find factor safety according to maximum shear stress criterion.

111. Find factor of safety according maximum distortion energy theory.

P=10 kN P=10 kN

Figure shows a prismatic circular bar subjected to eccentric axial load of 10 kN
with eccentricity e = 10 mm from axis of the bar. Find diameter of the bar using
Maximum principle stress theory.

Material properties are: Yield stress in tension = 235 MPa and Ultimate tensile
strength ಎ 300 MPa. Factor of safety = 3.5.

A plastic bar ACB having two different solid circular cross sections is held
between rigid supports as shown in the figure. The diameters in the left- and right-
hand parts are 50 mm and 75 mm, respectively. The corresponding lengths are
225 mm and 300 mm. Also, the modulus of elasticity E is 6.0 GPa, and the
coefficient of thermal expansion is 100 x 10°/°C. The bar is subjected to a

uniform temperature increase of 30°C.

—— mm Bf

50mm C

|. 225 നസ 300 mm ‏ب‎

A

Calculate:
1. Maximum compressive stress
2. Displacement of point C
A block weighing W=5.0 14 drops inside a cylinder from a height / = 200 mm

onto a spring having stiffness k = 90 N/m

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