GLG310 Structural Geology Todays plan Continue Force, Stress,

GLG310 Structural Geology Todays plan  Continue Force, Stress,

GLG310 Structural Geology Todays plan Continue Force, Stress, and Strength (Chapter 3) [continue reading Chapter 3] Be sure to cross reference the lecture and the textbook February 27, 2020

GLG310 Structural Geology Force, Stress, and Strength Introduction Dynamic analysis Force Tractions (stress simply)

Stress Relationships between stress and strain Deformation experiments February 27, 2020 GLG310 Structural Geology Stress simply Simple definition of stress (for the moment) =

pressure =Force/Area February 27, 2020 Stress simply Stress = Force/Area = N/m2 = Pascal = Pa Blaise Pascal, was a French mathematician, physicist, inventor, writer and Christian philosopher. Pascal's earliest

work was in the natural and applied sciences where he made important contributions to the study of fluids, and clarified the concepts of pressure and vacuum. Pascal also wrote in defense of the scientific method. Born: June 19, 1623, Clermont-Ferrand Died: August 19, 1662, Paris (Wikipedia)

Stress and deformation Use your stress and deformation words correctly: Stress Deformation (strain) Tension Extension Compression

Contraction or shortening -watch out for Art Sylvester! http://www.geol.ucsb.edu/faculty/sylvester/ https://www.azpm.org/s/5840-a-visit-to-the-ray-mine

Ray Mine AZ: rocks come from depth overburden Tractions and stress Replace effect of adjacent rocks with forces Rock

quarried from the earth Tractions and stress A more strict definition of stress Traction is stress relative to a surface through a point p. Stress tensor is the field of tractions

acting over a point p. Stress field is the entire collection of stress tensors in a body. February 27, 2020 GLG310 Structural Geology Tractions and stress Start with equilibrium (Newtons 3rd

Law): Resolve each into its components in the coordinate directions February 27, 2020 GLG310 Structural Geology

Tractions and stress Total torque must vanish February 27, 2020 GLG310 Structural Geology Tractions and stress Sign Conventions: compression positive

In many engineering situations, we consider tension as positive and compression negative. This is not usually the case in structural

geology. -Fundamentals of Rock Mechanics by Jaeger and Cook (3rd ed., p. 10) Normal vector: unit length, perpendicular to plane A polygon and two of its normal vectors

A normal to a surface at a point is the same as a normal to the tangent plane to that surface at that point. A vector field of normals to a surface

http://en.wikipedia.org/wiki/Normal_(geometry) Tractions and stress (a) Traction or Stress vector (b) Equilibrium

Cauchys relationship (c) Components of the Traction Vector Baron Augustin-Louis Cauchy (21 August 1789 23 May 1857) was a French mathematician who was an early pioneer of analysis. He started the project of

formulating and proving the theorems of infinitesimal calculus in a rigorous manner. A profound mathematician, Cauchy exercised a great influence over his contemporaries and successors. His writings cover the entire range of mathematics and mathematical physics. More concepts and theorems have been named for Cauchy than for any other mathematician (in elasticity alone there are sixteen concepts and theorems named for Cauchy).

February 27, 2020 GLG310 Structural Geology Equilibrium February 27, 2020

GLG310 Structural Geology Multiple sources of stress February 27, 2020 GLG310 Structural Geology Stress tensor

Stress tensor February 27, 2020 Stress tensor

Recently Viewed Presentations

  • Presentation Title Will Appear Here

    Presentation Title Will Appear Here

    Typical Closing Meetings address:- Voice appreciation for the professionalism and dedication process- Review the purpose and scope of the assessment- Review of the areas assessed- Strengths and Opportunities identified- Review of any Nonconformity Records generated- Expectations regarding Corrective Actions (content/timing)-...
  • Energy Roles in Ecosystems - Miss Burnett's 6th grade Classroom

    Energy Roles in Ecosystems - Miss Burnett's 6th grade Classroom

    Energy Roles in Ecosystems. Producers, Consumers, Decomposers. Producers. Producers. Make their own food for energy. Use energy from the . sun. They are a source of energy for other organisms. Consumers. Consumers. Consumers. Consumers. Can NOT make their own food.
  • Public Health Surveillance - Virginia Commonwealth University

    Public Health Surveillance - Virginia Commonwealth University

    States report to CDC Virginia Reportable Disease List Over 70 reportable diseases/conditions Epi-1 Form Chain of Communication Physicians Labs Hospitals/Medical Care Facilities Local H.D. Regional Epis Central Office CDC Other States Other Health Districts State Electronic Surveillance National Electronic Disease...
  • Jeopardy Nomenclature Empirical Formulas Molecular Formulas Hydrates  Percent

    Jeopardy Nomenclature Empirical Formulas Molecular Formulas Hydrates Percent

    The empirical formula of a compound of phosphorus and oxygen was found to be P 2 O 5. Experimentation shows that the molar mass of this compound is 283.89g/mol. What is the compounds molecular formula? ... Vanillin contains 63.15% carbon...
  • Basic Rules for Forming Imperatives

    Basic Rules for Forming Imperatives

    Times MS Pゴシック Arial Times New Roman Times CY Blank Presentation Prepositional Case So far you know 3 prepositions that take prepositional: Prepositional, unlike other cases, NEVER occurs without a preposition.
  • Bonding - PHA Science

    Bonding - PHA Science

    Write the symbols/formulas with charges for the anion and the cation "Cross" the charge down to the bottom of the other side. Do not write the + or - Rewrite formula without charges, but with the subscripts only. Ex 1)...
  • 1.2 Matrices Vectors and Gauss - Jordan elimination (Such an ...

    1.2 Matrices Vectors and Gauss - Jordan elimination (Such an ...

    1.2 Matrices Vectors and Gauss - Jordan elimination (This is such an interesting topic that it was made into a movie) Write the system as a matrix Write the following matrix in reduced row echelon form (example taken from p....
  • Engaging Mathematics For All Learners - NRICH

    Engaging Mathematics For All Learners - NRICH

    Why would you use it? Patterns and Sequences - Stage 4 Train Spotters' Paradise Seven Squares Steel Cables What's it Worth? Marbles in a Box PowerPoint Presentation To summarise What next… PowerPoint Presentation Frogs