problemset1 - , 181 12 12 2 1 = = = = 4- Find the...

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Problem set: 1 Mechanics of Composite Materials Data : / / 1- A displacement field in a body is given by u = 10 –5 (x 2 + 6y + 7xy) v = 10 –5 (yz) w = 10 –5 (xy + yz 2 ) Find the state of strain at (x,y,z) = (1,2,3). 2- Consider a bar of cross-section A and length L. A uniform tensile load P is applied to the two ends of the rod; find the state of stress and strain, and strain energy per unit volume of the body. Assume that the rod is made of an orthotropic material. 3-For a graphite/epoxy unidirectional lamina, find the following: 1. Compliance matrix 2. Minor Poisson’s ratio 3. Reduced stiffness matrix 4. Strains in the 1–2 coordinate system if the applied stresses are: MPa MPa MPa 4 , 3 , 2 12 2 1 = - = = τ σ GPa G GPa E GPa E 17 . 7 28 . 0 , 3 . 10
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Unformatted text preview: , 181 12 12 2 1 = = = = 4- Find the engineering constants of a 60 graphite/epoxy lamina. Also plot the engineering constants vrsus 5- Find the following for a 60 angle lamina of graphite/epoxy. Use the properties of unidirectional graphite/epoxy lamina from proceeding prolem. 1. Transformed compliance matrix 2. Transformed reduced stiffness matrix If the applied stress is x = 2 MPa, y = 3 MPa, and xy = 4 MPa, also find : 3. Global strains 4. Local strains 5. Local stresses 6. Principal stresses 7. Maximum shear stress 5- Mechanics_of_Composite_Structures-CAMBRIDGE.pdf Other- Mechanics_of_composite_materials by Arthur kaw.pdf...
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problemset1 - , 181 12 12 2 1 = = = = 4- Find the...

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