A high-density polyethelene (HDPE) [E = 780 MPa; V = 0.46] rod has a diameter of 80 mm before load P is applied. In order to maintain certain clearances, the diameter of the rod must not exceed 81 mm when loaded. What is the largest permissible compressive load P that can be applied to the HDPE rod?

A high-density polyethelene (HDPE) [E = 780 MPa; v = 0.46] rod has a diameter of 90 mm before load P is applied. In order to maintain certain clearances, the diameter of the rod must not exceed 92 mm when loaded. What is the largest permissible compressive load P that can be applied to the HDPE rod? P High-density polyethelene (HDPE) rod Answer: P = i kN

A composite column is formed by placing a steel bar, 20 mm in diameter and 200 mm long, inside an alloy cylinder of the same length whose internal and external diameters are 20 mm and 25 mm, respectively. The column is then subjected to an axial load of 50 kN. If E for steel is 200 OOO N/mm’ and E for the alloy is 70 000 N/mm’, calculate the stress in the cylinder and in the bar, the shortening of the column and the strain energy stored in the column.

If the lateral compressive strain in a material is 0.3 x 10-3 and the Poisson ratio is 0.25, then longitudinal strain in the material is ✓ 0.0012 (tensile) 0.0012 (compressive) 7.5 x 10-5 (compressive) 7.5 x 10-5 (tensile)

pre stressed conc. solution pls answer

A storage tank of air, 30 inches in diameter, is to withstand an internal pressure of 180 psi with a design factor of 3.5 based on ultimate stress. The steel has the strength equivalent of C1020 annealed and the welded joints should have a relative strength of 92%. Note: ultimate stress of for annealed C1020 steel is 50 ksi. Compute for longitudinal stress of the tank. a.13, 171 psi b.13, 786 psi c.12,893 psi d.12,860 psi

A high-density polyethelene (HDPE) [E = 780 MPa; v = 0.46] rod has a diameter of 100 mm before load P is applied. In order to maintain certain clearances, the diameter of the rod must not exceed 102 mm when loaded. What is the largest permissible compressive load P that can be applied to the HDPE rod? P. High-density polyethelene (HDPE) rod Answer: P = i P kN

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