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SOM (poisson's ratio)



In analysis software we have to input at-least E and U propertiess, But when we look in simple deflection formula (W*L^3)/(3*E*I), not required (poisson's ratio)

why we have to input poisson's ratio? 

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2 answers to this question

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E and Nu are minimum requirement to form a stiffness matrix - technically...


Theoretically- Nu defines the way material will change its shape. Hooke's Law



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