Thermal Strain.pdf - Mechanics of Materials CIVL 3322 MECH...

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Mechanics of Materials CIVL 3322 / MECH 3322 Thermal Strain Function Variation at Small Angles Thermal Strain 2 0.07 0.09 0.11 0.13 0.15 0.17 0.19 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 Function Value Angle in Degrees Angle Ratio Angle Sine Angle Tangent
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Thermal Strain ¢ Thermal strains are strains that develop when a material is heated or cooled ¢ They can be the bane of an engineer’s existence if they are not considered ¢ Materials that fit perfectly at one temperature can rupture or fall out when their environmental temperature changes Thermal Strain 3 Thermal Strain ¢ The problem can be made even worse when a combination of thermal strain and strains induced by loadings are combined ¢ Strains caused by thermal changes and strains caused by loadings are additive Thermal Strain 4
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Thermal Strain ¢ Thermal strains are typically linear in nature ¢ A uniform change in strain will occur for every degree change in temperature no matter where on the temperature scale it starts from ¢
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