Question

a steel rod ABC firmly held at A and C has cross sectional area of 1000 square m mfor 400 mm length a 1500mm2 for 600 mm length?
if the rod is heated through 10K find the stress developed in part AB and BC​

Answer 1

Answer:

Stress

Stress can be classified broadly in three types as described below:

1. Tensile stress: It is illustrated in Fig. 2.1

where a tensile load W is applied to a uniform rod fixed at one end

Tensile stress, σ = W

Cross-sectional area of rod = W

A. Compressive stress: As shown in Fig. 2.2

when load W tends to compress a rod

of cross-section area A, then compressive

stress =

W

A .

W

Figure 2.2

3. Shear stress: If two plates are joined

together with rivet as shown in Fig. 2.3.

The stress in rivet is known as shear stress,

it is denoted by τ (Greek letter tau), shear

stress in rivet, τ = F

A

Answer 2

Answer:

30 MPa; 20 MPa

Explanation:

see attachment