topic Re: Glulam material physical asset parameters explanation in Revit Structure Forum

Glulam material physical asset parameters explanation

ouspensky — Thu, 29 Mar 2018 09:02:18 GMT

I am working glulam bamboo beams and I need to modify some properites of the physical asset of a generic glulam material. Where is the documentation for these properties (see image)

Glulam Properties

1. Mechanical > Behavior (i.e. what is meant by isotropic, transverse isotropic, orthotropic)??

2. Strength>Construction (i.e. what is meant by Natural, KertoK, KertoS,ect.)

3. strength grade?

4. and why are yield and tensile strength set to 0?

thanks

Re: Glulam material physical asset parameters explanation

teodorb — Thu, 29 Mar 2018 10:36:34 GMT

Hi @ouspensky,

Here are some explanations:

1. Mechanical > Behavior (i.e. what is meant by isotropic, transverse isotropic, orthotropic)??

Isotropic material: https://www.quora.com/What-are-homogeneous-isotropic-anistropic-and-orthotropic-materials

Transverse isotropic vs Orthotropic: https://www.quora.com/What-is-the-difference-between-orthotropic-and-transversely-isotropic-material

2. Strength>Construction (i.e. what is meant by Natural, KertoK, KertoS,ect.)

Most likely this is the construction method to obtain the element.

3. strength grade?

There are different grades for this. here is an example:

http://www.nzwood.co.nz/faqs/what-strength-grades-should-glulam-be-designed-to/

4. and why are yield and tensile strength set to 0?

Coudl you tell me where did you get this from? The actual material assset?

Re: Glulam material physical asset parameters explanation

ouspensky — Sat, 31 Mar 2018 05:54:42 GMT

3. Are the different construction methods (natural, KertoK, KertoS, ect.) used in the structural calculation? if so how are they used? why are we only given these options? can we make our own construction methods ? is it useful or necessary to make our own construction methods? how can we make our own construction methods?

4. Yes the defualt material asset parmeter for glulam wood is defined as "0"

Re: Glulam material physical asset parameters explanation

ouspensky — Sat, 31 Mar 2018 13:49:17 GMT

An additional question:

I tried to make a custom material as transverse isotropic and it caused an analysis error: Incorrect Poissons Ratio. What are the guidelines for entering poissons ratio?

anisotropic material