How do i determine the F, if i know the strain matrice and thetension matrice?...

Question

Question

с F B 10° F 40° h 30° A b

How do i determine the F, if i know the strain matrice and the tension matrice? Which formulas do i use, thanks!

engineering Mechanical-Engineering

Answer 1

Answer #1

First here we need find the strain in x-direction

Strain ion x-direction

strain in y-direction

Shear strain

we have known three strains at three different angles from strain rosettes

put 40 , 100 , -30 Degrees in place of theta in the above equation

we will get three equations in terms of

We have three equations and three unknowns

Solve equations for

from calculate stress in x-direction from below formulae

from stress in x-direction calculate force F by multiplying area

Area= b*h

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Answer 2

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