Calculate Cross Section Area of Steel Rod for 3 Tonne Tension

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SUMMARY

The discussion focuses on calculating the cross-sectional area (CSA) of a medium carbon annealed steel rod subjected to a tension of 3 tonnes (29,430 N). The rod has a thickness of 15mm, and the stress is defined by the formula stress = force / area. To determine the CSA, one must first establish the allowable stress for annealed steel, which is calculated as 60% of the yield stress. This information allows for the calculation of the unknown dimensions of the rectangular cross-section.

PREREQUISITES
  • Understanding of stress and tension in materials
  • Knowledge of the formula stress = force / area
  • Familiarity with yield stress and allowable stress concepts
  • Basic geometry related to rectangular cross-sections
NEXT STEPS
  • Research the yield stress values for medium carbon annealed steel
  • Learn how to calculate allowable stress in materials
  • Explore methods for determining cross-sectional area in structural engineering
  • Study the implications of tension and stress on material selection
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Engineering students, materials scientists, and professionals involved in structural design and analysis, particularly those focusing on tensile strength and material properties of steel.

RichMortimer
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Homework Statement



A medium carbon annealed steel rod has a rectangular cross section and must cope with a tension of 3 tonnes. The thickness of the rod is 15mm. Calculate the size of the cross section.

Homework Equations



? The only formula I know with CSA and force is: stress = Force / Area ?

The Attempt at a Solution



I've not yet worked out a way to even attempt an answer...
I know the load is 29430N (3000 x 9.81) but I'm not sure how to evolve this into useful data!?

Can this be solved with this level of info??
 
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If the rod is in direct tension, then stress = force / area. You will need to determine the "allowable stress" of annealed steel. A good starting point for tension is allowable stress = 60% X Yield Stress. You can solve for the unknown length of the rectangle.
 

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