{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

zm7notes

# zm7notes - Page 1 Statically Indeterminate Structures and...

This preview shows pages 1–3. Sign up to view the full content.

Page 1 Statically Indeterminate Structures and Calculation of Deflections Deflection of Trusses Need other two great principles constitutive behavior compatibility Constitutive Behavior for Bars in a Truss Will later show (blocks 2 & 3) that the overall change in length of bar is ( for some range of materials, loads) δ α = + FL AE TL Symbol Meaning Dimensions SI units A = Cross-section area L 2 [ ] m 2 L = Length of bar [ L ] m F = Applied force [ ML/T 2 ] N/ E = Modulus of elasticity [ ML/T 2 .L 2 ] N/M 2 α = Coefficient of thermal expansion L L . θ [ ] M M K T = Temperature difference θ [ ] K Due to a change in temperature Due to force

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Page 2 Check Units δ θ θ = [ ] [ ] + [ ] [ ] = [ ] + [ ] ML T L L ML T L L L L L L OK 2 2 2 2 This is basically the same as F K = δ for zero thermal expansion Set T then FL AE rearranging AE L F = = = 0 δ δ [NOTE: a real spring has added geometry] Compatibility of Displacements
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern