3. An ASTM A36 structural steel beam 5.00 m long is placed between two rigid supports. When the temperature is 20°C, there is no stress in the bar. Compute the stress developed in the beam if the temperature rises to 45°C. Assume that the proportional limit is 235 MPa. a = 11.7 x 10-6 1/C° E = 207 GPa 4. In question 3, assume that the bar is free to elongate or shorten, calculate the change in the length of the bar if the temperature drops from 20°C to -20°C.

Q: Three rods of different materials are connected and placed between rigid supports at A and D, as…

A:

Q: 2. A steel shaft (G, = 80 GPa) of total length L = 3.0 m is encased for one-third of its length by a…

A: Given, Steel shaftGs=80 GPa Total length L=3 m Gb=40 GPa Diameter, d1=75 mmd2=90 mm Shear stress in…

Q: 9. Calculate the increase in stress for each segment of the compound bar shown. If the temperature…

A: Given:- The cross-sectional area of the aluminum bar = Aal = 2 in2  The modulus of elasticity of the…

Q: A rod consisting of two cylindrical portions AB and BC is restrained at both ends. Portion AB is…

A: Given a rod consisting of two cylindrical portions as shown below   AB is made up of steel, with Es…

Q: Three round bars welded together axially loaded as shown. Find the normal are stress in each bar if…

A: Stress is defined as the force acting per unit area of a bar. The stress in a bar is directly…

Q: The bronze bar 3 m long with a cross-sectional area of 350 mm? is placed between two rigid walls. At…

A: Given, l=3 mA=350 mm2T1=-20° Cδ=2.2 mmα=18×10-6 /° CE=80GPaσ= 30 MPa

Q: A small aluminum alloy [E = 71 GPa] tee shape is used as a simply supported beam as shown. For this…

A:

Q: Calculate the increase in stress for each segment of the compound bar shown in Fig. P- 266 if the…

A: To find out the increase of stress at both segments of compound bar.

Q: 8. A rigid bar AB is supported by three rods. A load P= 250 kN is applied to the bar. The modulus of…

A:

Q: 1. Establish stress equations for both bars in the two-bar assembly shown below which isloaded with…

A: The objective of the question is to establish stress equations for both bars in a two-bar assembly…

Q: 2. Axial loads are applied to the compound rod that is composed of an aluminum segment rigidly…

A: P = 10kN = 10 X 103 N

Q: Two cylindrical rods AB and BC are welded together at B and loaded as shown. Knowing that the…

A: Given data- Normal stress in AB- σAB=175 MPa, Normal stress in BC- σBC=150 MPa, To Find- The values…

British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.