18 Questions
What is the unit of measurement for the Modulus of Elasticity of steel?
Megapascals (MPa)
What happens to a material when it is subjected to loads and its modulus of elasticity is high?
It maintains its shape and does not deform
What type of strain occurs when the layers of a material slide past each other due to applied forces?
Shear strain
What is the dimension of the strain quantity?
Dimensionless
What is the typical range of the Modulus of Elasticity for structural steel?
200,000 to 210,000 MPa
What type of deformation occurs when a material returns to its original shape after stress is removed?
Elastic deformation
What is the main assumption in determining stresses in thin-walled pressure vessels?
The stresses are uniformly distributed
Which of the following is a fundamental concept in the study of strength of materials?
Hooke's Law
What is the primary difference between normal (axial) strain and shear strain?
Direction of deformation
At what point on a stress-strain diagram does the material begin to deform plastically?
Elastic limit
What is the term for the ratio of lateral contraction to longitudinal extension in a material?
Poisson's Ratio
Which of the following is a characteristic of material behavior within the proportional limit?
Linear stress-strain relationship
What is the relationship between deformation and strain in materials?
If there is deformation, there is strain, and if there is strain, there is deformation
According to Hooke's Law, what is the relationship between stress and strain in a material?
σ = Eϵ
What is the Young's modulus of elasticity (E) a measure of in a material?
The material's stiffness
What is the primary difference between a material's proportional limit and its elastic limit?
The proportional limit is the point of linear stress-strain behavior, while the elastic limit is the point of plastic deformation
What occurs when a material undergoes plastic deformation?
The material's shape and size change permanently
What is the primary purpose of a stress-strain diagram?
To determine a material's proportional and elastic limits
This quiz assesses understanding of simple strain and deformation in the context of strength of materials, including Hooke's Law and normal axial strain.
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