What is the thickness of a 120 mm wide uniform plate for safe continuous operation if the plate is subjected to a tensile load with a maximum value of 250 kN and a minimum value of 100 kN? The properties of the plate material are as follows

Endurance limit stress = 225 MPa

Yield point stress = 300 Mpa

factor of safety on yield point = 1.5

Use Soderberg's formula for calculating thickness.

Q. A plate of width 120 mm has a central hole of 20 mm diameter. The plate is subjected to an axial tensile load of 30 kN. Yield stress is 550 MPa and the theoretical stress concentration factor is 3. If a factor of safety is 5, what will be the plate thickness?

Q. A bar is subjected to fluctuating tensile load from 20 kN to 100 kN. The material has yield strength of 240 MPa and endurance limit in reversed bending is 160 MPa. Accordong to the Soderberg principle, the area of cross-section in $m{m}^2$ of the bar for a factor of safety of 2 is

Q. A bar is subjected to fluctuating tensile load from 20 kN to 100 kN. The material has yield strength of 240 MPa and endurance limit in reversed bending is 160 MPa. According to the Soderberg principle, the area of cross-section $inm{m}^2$ of the bar for a factor of safety of 2 is

Q. A bar of circular cross-section is subjected to alternating tensile forces varying from a maximum of 200 kN to a maximum of 500 kN. It is to be manufactured of a material with an ultimate tensile strength of 900 MPa and an endurance limit of 700 MPa of bar using safety factors of 3.5 related to ultimate tensile strength and 4 related to endurance limit and a stress concentration factor for 1.65 of fatigue load. Use goodman straight line as basis for design.