what is a bulk strain
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The ratio of the change in the volume of a body that occurs when the body is placed under pressure, to the original volume of the body.
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The volume change comes from thedefinition of Bulk Modulus. The totalBulk Stress is needed and comes from the stresses in the three directions. The Bulk Modulus is needed and comes from Young's modulus and Poisson's ratio. ... Bulk Stress is the Change in Volume/Unstressed Volume.
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