# assn4 - Two diﬀerent scenarios are to be considered: (a)...

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16.21 - Techniques of structural analysis and design Homework assignment # 4 Handed out: 3/4/05 Due: 3/11/05 March 4, 2005 Solidworks practice problem (Compliments of C. Graﬀ. ) Create a solid model for each of the following objects using Solidworks (you may turn in your Fle electronically for feedback purposes). Wooden Pencil: Door Hinge

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1. Consider the block of material shown in the Fgure. Determine the complete elasticity solution, i.e., all the elastic Felds u , σ, , when the block is subjected to the imposed displacement δ as shown in the Fgure. The block is made of a material that can be modeled as elastic and isotropic with Young’s Modulus E and Poisson’s ratio ν . Assume perfect sliding at the interface between the block and the walls.
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Unformatted text preview: Two diﬀerent scenarios are to be considered: (a) d << L, d << w and the lateral walls of the block–those determined by d the equation of the planes x 2 = 2 –are unrestrained in the x 2 direction, ± i.e. the plate can expand out of its plane. (b) The lateral walls of the block are not allowed to expand out of its plane. w δ L x x 1 3 d x x 3 2 d x x 3 2 (a) (b) 2. Problem 4.4 from textbook 3. Problem 4.6 from textbook but change the complementary strain energy to the strain energy 4. Problem 4.7 from textbook 5. Obtain a numerical value for the elastic energy stored in the block of problem 1 when L = 10 cm, w = 10 cm, d = 1 mm, E = 70 GP a, ν = 0 . 3 , δ = 2 mm . Consider both cases of plane strain and plane stress. 3...
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## This note was uploaded on 11/07/2011 for the course AERO 16.21 taught by Professor Dffs during the Fall '10 term at MIT.

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assn4 - Two diﬀerent scenarios are to be considered: (a)...

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