Muller-Breslau principle states that the influence line for a stress resultant is obtained by:
Choose the correct answer
removing the restraint corresponding to that resultant and imposing unit displacement in its positive direction
applying unit load at the section only
placing loads where shear force is zero
differentiating the bending moment diagram twice
Correct Answer
A. removing the restraint corresponding to that resultant and imposing unit displacement in its positive direction
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The principle gives the qualitative influence line by releasing the associated restraint and imposing a unit displacement or rotation in the positive sense.
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