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Fall 2008

My first entry

Hello,

My name is Pawel and I am a Junior in Harvard College, studying Mechanical and Materials Science and Engineering.

The only course in solid mechanics I've taken so far is the Harvard's undergraduate intro course ES 120 - I guess it's similar to intro courses offered at other universities. Bits and pieces of solid mechanics also appeared in some other courses, but mostly in a very basic form.

Kejie Zhao's picture

Kejie Zhao

Hi everyone, very glad to see you here. My name is Kejie Zhao, a first year phd student working in Prof.Zhigang Suo's group (www.seas.harvard.edu/suo). My concentration is solid mechanics with the same name of this course, it also signifies its importance to my future research. I graduate from Xi'an Jiaotong University in China before coming to Harvard. There I obtained my bachelor and master degree in Engineering Mechanics and Solid Mechanics respectively.

Sung Hoon Kang's picture

ES 240 Homework 6

Hello.

My name is Sung Hoon Kang and I am a second year graduate student of Applied Physics. I did my undergraduate study in Materials Sciene and Engineering at Seoul National University, Korea.

Rui Huang's picture

Engineering Mechanics 397: Thin Film Mechanics

Time: Tuesday and Thursday 2:00 - 3:30 pm

Place: ECJ 1.214, University of Texas at Austin

Instructor: Rui Huang, WRW 117D, (512) 471-7558, ruihuang@mail.utexas.edu

Lecture notes (coming soon)

Homewrok sets (coming soon)

Brief Outline of Topics

Zhigang Suo's picture

Solid Mechanics Homework 43-46

43. Energy loss
44. Zener model and relaxation test
45. Zener model and cyclic-load test
46. Vibration of a viscoelastic rod

Return to the outline of the course.

Zhigang Suo's picture

Solid Mechanics Homework 39-42

39. A circular transverse wave
40. Creep and recovery
41. Temperature dependence and Mr. Arrhenius
42. A loose nylon bolt

Return to the outline of the course.

Zhigang Suo's picture

Waves

A file on elastic waves is attached.

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Zhigang Suo's picture

ES 240 Solid Mechanics Project

Updated on 11 October 2008.  Each student creates a distinct project that (a) addresses a phenomenon, and (b) involves a serious use of ABAQUS.   To get some inspiration, see projects of students who took this course in the past.

The project contributes 25% to the grade, distributed as follows.

Zhigang Suo's picture

Solid Mechanics Homework 34-38

34. Surface acoustic wave device
35. Approximate a rod as a 2DOF system
36. Soft tissues: large difference in velocities of longitudinal and transverse waves
37. A general approach to determine body waves
38. Reflection and refraction of a transverse wave

Return to the outline of the course

Zhigang Suo's picture

Solid Mechanics Homework 31-33

31. A machine on a cantilever
32.  A beam on simple supports
33. Vibration of piano strings

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Zhigang Suo's picture

Vibration

Zhigang Suo's picture

Solid Mechanics Homework 26-30

26. Stress-strain relations under the plane strain conditions
27. Getting weak: derive weak statements from differential equations
28. Potential energy and Rayleigh -Ritz method
29. Constant strain triangle
30. Gaussian quadrature

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Zhigang Suo's picture

Solid Mechanics Homework 21-25

21. A fiber in an infinite matrix
22. Anti-plane shear
23. Saint-Venant's principle for orthotropic materials
24. Plane problems with no length scales
25. More scaling relations: a half space filled with a power-law material

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Zhigang Suo's picture

Solid Mechanics Homework 16-20

  • 16. Recommend a textbook that you think will help students in this course.  See recommendations from students who took this course before.
  • 17. Disclination (the cut-and-weld problem)
  • 18. Design a rotating disk to avert plastic deformation
  • 19. A half space of an elastic material subject to a periodic traction on the surface
  • 20. Orthotropy rescaling

Return to the outline of the course.

Zhigang Suo's picture

Solid Mechanics Homework 11-15

This set of homework relies on a few elementary facts of the algebra of vectors and tensors.  If you are vague about these facts, see some old notes I wrote when I taught ES 240 in 2006:  node/205/revisions/1385/view

11. Positive-definite elastic energy density
12. The coefficient of thermal expansion (CTE) is a second-rank tensor.
13. Hooke's law for anisotropic, linearly elastic solids
14. Invariants of a tensor
15. A "derivation" of the Mises (1913) yield criterion

Zhigang Suo's picture

Solid Mechanics Homework 6-10

6. Post an entry in iMechanica to explain to your teaching staff and classmates why you take this class.

7. Residual stress around an inclusion
8. Lame Solution in Cylindrical Shape
9. Stress Concentration around a Circular Hole
10. Back-of-Envelope Calculation

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Zhigang Suo's picture

Solid Mechanics Homework 1-5

Due 26 September 2008 in class

  1. Nothing Is Continuum, but...
  2. Hooke's law in various forms
  3. Compatibility: the strain-displacement relations
  4. Traction vector on a plane
  5. Turbine blade: centrifugal force and creep

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Zhigang Suo's picture

Elements of linear elasticity

Update on 26 September 2008: An updated file on elements of linear elasticity is posted. You can still access the older version by clicking "revisions".

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