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Q: What Strain which causes material to twist?
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Twist or pull of a muscle or tendon?

Its called a strain

What term mean a twist or pull of muscle or tendon?


Which of these terms means twist or pull of muscle or tendon?


What is strain energy theory?

This theory states that the failure of a material occurs when the total strain energy in the material reaches the total strain at the elastic limit in simple tension.

What is the formula for youngs modulus?

There is no formula for Youngs Modulus. Young's modulus is the slope of the linear part of a stress-strain diagram, so it is basically a test result. It can be thought of as a material constant related to rigidity of the material. For a high Youngs modulus, high load (stress) causes little deflection (strain).

What is the difference between stress and strain?

Stress is the load per unit area acting within a material. It can be thought of as the internal resistive response of a material to an externally applied pressure.Strain is the change in shape of an object in response to external pressure or internal stress. To complicate matters, strain causes the transmission of stress through an object (as in simple terms the strain causes an internal "movement" causing one part of the inside of an object to press against the material next to it generating stress in this region, this in turn can cause more strain and so on!).There are a number of differing types of strain, for example axial strain is defined as the change in length relative to the original length of an object (e.g. a steel wire being stretched). This change in shape is also called deformation. Volumetric strain occurs when an object is squashed or pulled on all sides leading to a change in volume.

Where does the stress-strain curve end?

when the material fails

How is strain different than deformation?

Strain is the term we use to mean we stretch or pull on something (like a material). Deformation is the term that speaks to the change of shape of something (that material) due to it being placed under strain.

What causes the strain energy underneath a fault line within the crust of the earth?

There is NO SUCH THING as "strain energy"Strain is the response of a system to an applied stress. When a material is loaded with a force, it produces a stress, which then causes a material to deform. Engineering strain is defined as the amount of deformation in the direction of the applied force divided by the initial length of the material.Thus the energy is the FORCE - the stress.The stresses present in a fault system are caused by the convection currents in Earth's mantle (driven by the heat in Earth's core). Once the stress builds up to a point that exceeds the strength of the rocks comprising the fault system, the rock fractures and moves and this is the strain.

What are the Stress-strain characteristics of ductile materials?

initially there is the linear elastic region which obeys the hooks law :stress is directly proportional to the strain. at the end of the linear elastic region the ductile material reaches the yield point beyond which any change in dimensions become permanent. the material goes through a yield plateau in which stress is constant and the strain changes. after crossing the yield plateau the ductile material goes through the strain hardening region in which the deformation is permanent but as the region goes on the stress increases with the strain. here the strength of the ductile material increases as it is strain hardened. at a point it reaches the ultimate load point. This is the maximum load taken by the material. after which further deformation causes decrease in strength or the stress goes on decreasing finally breaking at the breaking load point. this region is called the post-ultimate region.

What strain or pressure in a material due to forces acting on it?


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