snt 1

• Elastic design


  Design based on the elastic theory
• Elastic modulus


  Measure of a material's stiffness, defined as the ratio of stress to strain within the elastic limit
• Plastic modulus


  Measure of a material's resistance to plastic deformation, defined as the ratio of stress to strain beyond the elastic limit
• Theory of plastic analysis

  1. Continuation of beam analysis

  2. Yield and plastic moment

  3. Plastic hinges
• Elastic and plastic theories are used in the analysis of flexural members
• Beams can be classified based on geometrical features, supports, and usage
• Sections can be used as beams
• Stresses exist in beams
• Plastic hinges form in beams