Strain Definition and 462 Threads

In organic chemistry, ring strain is a type of instability that exists when bonds in a molecule form angles that are abnormal. Strain is most commonly discussed for small rings such as cyclopropanes and cyclobutanes, whose internal angles are substantially smaller than the idealized value of approximately 109°. Because of their high strain, the heat of combustion for these small rings is elevated.Ring strain results from a combination of angle strain, conformational strain or Pitzer strain (torsional eclipsing interactions), and transannular strain, also known as van der Waals strain or Prelog strain. The simplest examples of angle strain are small cycloalkanes such as cyclopropane and cyclobutane.

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  1. A

    Confusion Calculating Young's Modulus

    'Gummy 1' = Black Line 'Gummy 2' = Orange Line Approach: Using the diameter given and the force measurements on the vertical axis of the graph, I've worked out the cross-sectional area of the mold to be 0.000706858, which I've rounded to 0.00071. Using this data and the equation Stress = F/A...
  2. chrisbroward

    Engineering Why does this stress-strain diagram have two curves & x-axis scales?

  3. Chrono G. Xay

    I Is Transverse Strain Zero at the Bolts of a Clamped Circular Membrane?

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  4. B

    Engineering Calculating stress and strain in complex loading scenario

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  5. T

    A The field equations of elasticity

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  6. Hamiltonian

    Basic Stress and Strain question -- Rock on top of a vertical column

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  7. T

    What is the origin and validity of assumptions about the strain energy function?

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  8. T

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  9. giraffasaurusrex

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  10. S

    B Question about stress - strain graph and definition of hardness

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  11. Mohammad-gl

    A Does strain affect on-site energy?

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  12. B

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  13. S

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  14. C

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  15. baldbrain

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  16. B

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  17. D

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  18. FEAnalyst

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  19. person123

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  20. person123

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  21. B

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  22. archaic

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  23. archaic

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  24. A

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  25. chriscarson

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  26. chriscarson

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  27. FutureEngineer1720

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  28. S

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  29. S

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  30. H

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  31. greenrichy

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  32. W

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  33. N

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  34. K

    B Confusion about the Strain Energy when loading/unloading a sample

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  35. J

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  36. D

    Could This Be a Strain Gauge from My Disassembled Scale?

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  37. G

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  38. J

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  39. person123

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  40. E

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  41. J

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  42. A

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  43. T

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  44. R

    Creating Mohr's strain circle from a strain rosette

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  45. SirMarx01

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  46. Remixex

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  47. B

    Solution approaches for large strain mechanics

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  48. Miopen

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  49. Hamza Abbasi

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  50. H

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