Quiz: Section 2.5 Hooke’s Law for a Two Dimensional Angle Lamina

1. We use the transformation matrix to calculate local stresses from the global stresses. Is the transformation matrix the same to calculate local strains from the global strains?

2. What is the transformation of stresses at one point from one coordinate system to another coordinate system dependent on?

3. What is the transformation of strains at one point from one coordinate system to another coordinate system is dependent on?

4. Which matrix should be multiplied by the global strain vector to obtain the global stress vector?

5. Which matrix should multiplied by the global stress vector to obtain the global strain vector?

6. Which matrix should multiplied by the local stress vector to obtain the global stress vector?

7. If a normal stress is applied to an angle lamina in the global axes, it results only in normal strains in the global axes.