stainless steel 'T' Section design

[hi5chenchen]

G'day guys
I am designing a 'T' section which is make of stainless steel grade 316 (316 L).
Currently I am referring to AS 4673 section 2 for checking all the bending shearing and deflection. However, I am not very familiar with the code and there are some terms which I could not fully understand . For example, what is the difference between effective section modulus and elastic modulus? can I just assume for the full cross section modulus?
Also I read other threads, seems some people refer to another book, AISC stainless steel. I don't have access to the book, just want to make sure is this the definite book i need to look into? I prefer AS standard, wondering if anyone is familiar 'AS 4673 cold form stainless steel'

appreciate if anyone can give me some lead, thanks

 

[BAretired]

Section modulus is a property of the section and is equal to the moment of inertia divided by the distance from the centroid to the outer fiber.

Elastic modulus is a property of the material and is also known as Young's Modulus or Modulus of Elasticity and is defined by stress divided by strain. For most steels, it is in the order of 29,000,000psi or about 200,000MPa.

BA

 

[hi5chenchen]

Sorry BA,
typo mistake i have made. I meant elastic section modulus and effective section modulus, both of which are being mentioned in AS 4673.
I understand the concept of section modulus and young's modulus, thanks

 

[rapt]

As a general comment in steel member design, Depending on the flange outstand width and the flange thickness, it is often required that some of the flange width is ignored in flexural design. So the effective inertia could be less than the elastic inertia.

 

[BAretired]

Elastic section modulus is I/y where I is moment of inertia and y is distance from neutral axis to extreme fiber.

In the case of light gauge sections, elements in compression may have an "effective" width which is less than the actual width to compensate for the fact that they may buckle under stress. I don't know the AS 4673 code but the Canadian code defines the effective width of various elements which, together, form the effective section. The effective section modulus is the section modulus of the effective section and is always less than or equal to the elastic section modulus.

BA

 

[rapt]

BA

I must have beaten you by seconds!

 

[BAretired]

rapt,

Yup, looks like it!

BA