The discussion revolves around calculating the tensile strain of a glass rod subjected to a tensile load, with specific parameters including diameter, load, and Young's modulus. The subject area is material mechanics, focusing on the relationship between stress, strain, and material properties.
The conversation includes various attempts to calculate tensile strain, with some participants expressing uncertainty about their methods. There is a mix of exploratory questions and mathematical reasoning, with at least one participant affirming the correctness of a calculation. However, no consensus has been reached on the final answer.
Participants are working within the constraints of a homework assignment, which may limit the information shared and the methods discussed. There is also a mention of thermal strain related to temperature change, introducing additional complexity to the discussion.
tone999 said:Homework Statement
If a glass rod of diameter 1cm is loaded with a 1kN tensile load and has a young's modulus of 70 GPa, what is the tensile strain?
Homework Equations
The Attempt at a Solution
Im sure if somebody could tell me the formula for this i could work it out easily
tone999 said:Strain = 1kN / ((pi*1^2)/4 * 70GPa) = 1kN / (.7854cm^3 * 70GPa)
Strain = 1000N / (785mm^2 * 70000 N/mm^2) = 0.000182
Is this correct now?