Elastic Section Modulus or Plastic Section Modulus?
Elastic Section Modulus or Plastic Section Modulus?
(OP)
Hello,
What is the difference between using Elastic Section Modulus (S) and Plastic Section Modulus (Z). I am desigining a base plate which happens to work if using Z, but it does not if using S. I am working usin Limit States Dedign (Canadian Code). Thanks for any input..
What is the difference between using Elastic Section Modulus (S) and Plastic Section Modulus (Z). I am desigining a base plate which happens to work if using Z, but it does not if using S. I am working usin Limit States Dedign (Canadian Code). Thanks for any input..






RE: Elastic Section Modulus or Plastic Section Modulus?
RE: Elastic Section Modulus or Plastic Section Modulus?
That means that when using plastic section modulus, I am using the full capacity of a section; so if using elastic instead of plastic, am I being just conservative? or what other implications may have using one or the other?... Thanks again
RE: Elastic Section Modulus or Plastic Section Modulus?
The section modulus S would be used for determining stresses within the elastic range. It is also used in determining Mr for Class 3 sections (not applicable to a base plate).
Look at page 1-33, Article 13.5 in your CISC Handbook of Steel Construction.
BA