PPT-Engineering Stress and Strain in Civil Structures

Year 12 Engineering Studies Civil Structures Engineering Stress Stress is the bodys internal reaction to an externally applied force It may be tensile compressive or shear Tensile and compressive stresses are axial stresses because the external force either tension or compression is applied along the axis of the member. Shear stress and shear strain. Equality of shear stresses on perpendicular planes. Hooke Plane stress versus plane strain.Transformation equations. Principal strains and maximum shear strains. Mohr FEA for Nonlinear Elastic Problems. Nam-Ho Kim. Table of Contents. 3.2. Stress and Strain Measures in Large Deformation. 3.3. Nonlinear Elastic Analysis. 3.4. Critical Load Analysis. 3.5. Hyperelastic Materials. Faculty of Natural Sciences. Depart. of Math, PHYs & Stats. PHY 110 – Physics FOR ENGINEERS. Lecture 12. (THURSDAY, November 17, 2011). 1. Lecture Notes:. For this information, visit my website:. Multiple Bending-Unbending. Springback Process. H.-M. Huang. S.-D. . Liu. National Steel Corporation,. 12261 Market St.,. Livonia, MI . 48150. S. Jiang. DaimlerChrysler Corporation,. 800 Chrysler Dr.,. Multiple . Slip. 27-. 750. Texture, Microstructure & . Anisotropy. A.D. Rollett. ,. Lecture notes originally by:. H. . . Garmestani. (. GaTech. ), . G. . Branco. (FAMU/FSU). Last revised:. 23. How materials work. Compression. Tension. Bending. Torsion. Millau viaduct, France (2005). Cable-stayed design, 2.5 Km long, 340m high. Great pyramid, Egypt (2560BC). Height: 139m. Lincoln cathedral, England (1300) Height: 160m. Lunch n Learn. 1. This presentation was developed by Organizational Wellness & Learning Systems, Inc.. Objectives. As a result of this session, participants will. Enhance their ability to notice signs of stress and more readily take action to reduce stress. Key Points:. Bending moment causes beam to deform.. X = longitudinal axis. Y = axis of symmetry. Neutral surface – does not undergo a change in length. 6.2 Bending Deformation and Strain. Key Points:. Targets. Dan Wilcox. High Power Targets Group, RAL, UK. ICANS XXIII, Chattanooga, October 16th 2019. Outline. Background. Asymmetric-clad strip method. Neutron diffraction method. Results and analysis. From fig 4 , the decline in the stress necessary to continue deformation past the maximum, point M, seems to indicate that the metal is becoming weaker. However, the cross-sectional area is decreasing rapidly within the neck region, where deformation is occurring. The stress, as computed from . Asady. Al-. Mustansiryah. University . Mechanical Engineering Department. Part 1 : theory. Strain. Simple Strain. Also known as unit deformation, strain is the ratio of the change in length caused by the applied force, to the original length.. where δ is the deformation and L is the original length, thus ε is dimensionless. . Stress-Strain Diagram . Suppose that a metal specimen be placed in tension-compression testing machine. As the axial load is gradually increased in increments, the total elongation over the gage length is measured at each increment of the load and this is continued until failure of the specimen takes place. Knowing the original cross-sectional area and length of the specimen, the normal stress σ and the strain ε can be obtained. The graph of these quantities with the stress σ along the y-axis and the strain ε along the x-axis is called the stress-strain diagram. The stress-strain diagram differs in form for various materials. The diagram shown below is that for a medium carbon structural steel. . FINITE ELEMENT ANALYSIS AND DESIGN. Nam-Ho . Kim. STRESS. Stress. Fundamental concept related to the safety of a structure. Often used as criteria for mechanical design. Internal force created by deforming the shape against external loads..