Math Problem Statement

What is approximately the shear modulus for an elastic material with Poisson's ratio of 0.27 and Young's modulus of elasticity of 95,000 MPa?

Solution

The shear modulus GG can be calculated using the relationship between the shear modulus, Young's modulus EE, and Poisson's ratio ν\nu:

G=E2(1+ν)G = \frac{E}{2(1 + \nu)}

Where:

  • EE is the Young's modulus (95,000 MPa),
  • ν\nu is the Poisson's ratio (0.27).

Substituting the given values:

G=95,0002(1+0.27)G = \frac{95,000}{2(1 + 0.27)} G=95,0002(1.27)=95,0002.5437,402.36MPaG = \frac{95,000}{2(1.27)} = \frac{95,000}{2.54} \approx 37,402.36 \, \text{MPa}

Thus, the approximate shear modulus for this elastic material is 37,402 MPa.

Would you like more details or have any questions on this?

Here are 5 related questions:

  1. How does Poisson's ratio affect the shear modulus?
  2. What is the significance of the shear modulus in material properties?
  3. How would a higher Poisson's ratio change the result?
  4. What other methods can be used to calculate the shear modulus?
  5. What are typical values of the shear modulus for common materials?

Tip: Always ensure units are consistent when applying formulas in engineering problems to avoid errors.

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Math Problem Analysis

Mathematical Concepts

Elasticity
Material Mechanics
Modulus of Elasticity

Formulas

G = E / 2(1 + ν)

Theorems

Relation between Shear Modulus, Young's Modulus, and Poisson's Ratio

Suitable Grade Level

College Engineering