Mechanics of Materials Exam 2 Questions With Correct Answers

Mechanics /




of
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Materials
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Exam 2 Questions With Correct Answers
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Normal //Strain //- //CORRECT //ANSWERS(S)✔✔The //change //in //length //per //unit //length //(e)



Shear /
/Strain //- /


/CORRECT /


/ANSWERS(S)✔✔The //change //in //ange //between //two //perpendicular //line //segments //(y)




Dimensions /
/of /


/Normal /


/Strain //- /


/CORRECT //ANSWERS(S)✔✔Essentially //dimensionless, //but //use //cm/cm, //in/in, //µm/m, //µ, //etc.




Dimensions //of //Shear //Strain //- //CORRECT //ANSWERS(S)✔✔radians



Small //Strain //Analysis //- //CORRECT //ANSWERS(S)✔✔Analysis //assuming //small //deformations:

• //small //e //and //ø

• //sin(ø) //= //ø

• //cos(ø) //= //1

• //tan(ø) //= //ø

, The //2 //Ways //to //navigate //between //rectilinear //and //co-
ordinate /
/systems //for //strain //components //- //CORRECT //ANSWERS(S)✔✔1) //Transformation //Equations



2) //Mohr's //Circle



Principal /
/Strains //- /


/CORRECT /


/ANSWERS(S)✔✔The /


/normal /


/strains /


/at //


a/
/particular /


/orientation /


/of /


/an /


/element /


/where /


/no /


/shear /


/strain /


/occurs, //one //normal //strain //component //is //at //maximum, //and //the //other //is //at //minimum.




Maximum //in-
Plane /
/Shear /


/Strain //- /


/CORRECT /


/ANSWERS(S)✔✔The /


/shear /


/strain /


/at //


a/
/particular /


/orientation /