01-02ChapGere.0005 - 36 A-PDF Tension Compression and Shear...

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Problem 1.6-15 A shock mount constructed as shown in the figure is used to support a delicate instrument. The mount consists of an outer steel tube with inside diameter b , a central steel bar of diameter d that supports the load P , and a hollow rubber cylinder (height h ) bonded to the tube and bar. (a) Obtain a formula for the shear stress t in the rubber at a radial distance r from the center of the shock mount. (b) Obtain a formula for the downward displacement d of the central bar due to the load P , assuming that G is the shear modulus of elasticity of the rubber and that the steel tube and bar are rigid. Problem 1.6-14 A bicycle chain consists of a series of small links, each 12 mm long between the centers of the pins (see figure). You might wish to examine a bicycle chain and observe its construction. Note particularly the pins, which we will assume to have a diameter of 2.5 mm. In order to solve this problem, you must now make two
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