Unformatted text preview: the middle bar is slightly shorter than the other bars (see figure). The dimensions and properties of the assembly are as follows: length L 5 1.0 m, cross-sectional area of each bar A 5 3000 mm 2 , modulus of elasticity E 5 45 GPa, and the gap s 5 1.0 mm. (a) Calculate the load P 1 required to close the gap. (b) Calculate the downward displacement d of the rigid plate when P 5 400 kN. (c) Calculate the total strain energy U of the three bars when P 5 400 kN. (d) Explain why the strain energy U is not equal to P d /2. ( Hint: Draw a load-displacement diagram.) L P s A-PDF Split DEMO : Purchase from www.A-PDF.com to remove the watermark...
View Full Document
- Spring '08
- Trigraph, The Gap, Queensland, b1 ) b1