lec10 (2) - Lecture 8: Beam stress model Lecture 9: Beam...

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1.050 Engineering Mechanics Lecture 10: Strength models 1D examples – truss structures
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1.050 – Content overview I. Dimensional analysis 1. On monsters, mice and mushrooms 2. Similarity relations: Important engineering tools II. Stresses and strength 2. Stresses and equilibrium 3. Strength models (how to design structures, foundations. . against mechanical failure) III. Deformation and strain 4. How strain gages work? 5. How to measure deformation in a 3D structure/material? IV. Elasticity 5. Elasticity model – link stresses and deformation 6. Variational methods in elasticity V. How things fail – and how to avoid it 7. Elastic instabilities 8. Plasticity (permanent deformation) 9. Fracture mechanics Lectures 1-3 Sept. Lectures 4-15 Sept./Oct. Lectures 16-19 Oct. Lectures 20-31 Nov. Lectures 32-37 Dec.
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1.050 – Content overview I. Dimensional analysis II. Stresses and strength
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Unformatted text preview: Lecture 8: Beam stress model Lecture 9: Beam model II and summary Lecture 10: Strength models: Introduction (1D) Lecture 11: Mohr circle strength criteria 3D Lecture 12: Application foundations III. Deformation and strain IV. Elasticity V. How things fail and how to avoid it Quiz I Covers first 15 lectures QUIZ I: Dimensional analysis, stresses and strength Monday October 15 in class Start to prepare early! P P Surface roughness Image of crack propagation removed due to copyright restrictions. See Figure 3 in: Buehler, Markus, et al. Threshold Crack Speed Controls Dynamical Fracture of Silicon Single Crystals. Physical Review Letters 99 (2007): 165502. A 1 A 3 A 2 A 1 /A 3 =2 same strength 0 0 1 2 3 4 5 6 7 8 Ro bu st ne ss ra ti o gam ma_1/ ma_3 20 40 60 80 100 Angle phi...
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lec10 (2) - Lecture 8: Beam stress model Lecture 9: Beam...

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