Simulate Early, Simulate Often... In Rhino
Hello Scan-and-Solve community,
I am currently seeking additional materials that users would like to see added to the Scan-and-Solve material library http://www.intact-solutions.com/resources.php
There is already a solid foundation of metals, plastics, and woods, as well as the option to customize one's own material, however if there are any materials you wish were included please post them here.
I am trying to get my engineer for a yacht project to put his head together with the SnS guys and come up with a series of carbon fiber/epoxy laminates that can further be used with common Airex foam cores to run sims on components of the boats. My builder uses a combination of bi-axial CF that the engineer considers 'quasi-isotropic due to the orientation of the strands. I'll try and post any info on the rest of the combinations here for all to study and make suggestions and hopefully we can add these to the mats library.
Thanks for taking the lead here!
I will further investigate this topic to see what we can do.
Thank you for your feedback
is there a possibility to get the data of a laminated beam (douglas fir)
If the grain orientation in the layers of your composite beam is relatively consistent among the layers, you can use the material properties for the wood of your choice. You should then choose the grain orientation [Rift] [Flat] [Specify] [Guide] that corresponds to the overall grain pattern in the composite beam. This video https://www.youtube.com/watch?v=YGjsMcXH2OQ may help in this regard. If not, let us know and we can help.
If the orientation of the wood in the layers is not consistent (or you wish to change the composite material between layers), you must design the object one layer at a time with each layer being in contact, and add each component into Scan&Solve Pro individually. You can then select the desired material and grain orientation for each layer, and simulate the object as a whole (this is possible due to Scan&Solve Pro’s ability to treat multiple components in contact as a single joined objet). This technique of creating many thin layers individually to form a large object however can be tedious, computationally intensive, and prone to input errors.
Ben, thank you I shall try the first option
Is it possible that you can you send me me the explanation of the abbreviatons of the wood sectie
I assume you are referring to the material selector column title abbreviations displayed below.
These abbreviations represent the material properties in the different grain directions, with the l subscript representing the longitudinal grain direction, t subscript representing the tangential grain direction, and r subscript representing the radial grain direction. The variable E indicates the Elastic (Young’s) modulus of the material in the specified subscript direction, which represents the material stiffness. The variable v represents the materials Poisson’s ratio, and is followed by two subscripts. The corresponding ratio describes the amount strain will be experienced in the second subscript direction as a result of strain experienced in the first subscript direction. For example, if a beam is in pure tension along the longitudinal direction, the thickness of the material body will begin to decrease through a process called necking. The larger the Poisson’s ratio is in the Vlr and Vlt directions, the more necking the material would experience. The variable G represents the material shear modulus, which is a representation of material stiffness in the shearing directions defined by the subscripts.
The material properties for the woods in the Scan&Solve database are derived from those published here: http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/ch04.pdf
Note that vlt does not equal vtl, vrt does not equal vtr, and vlr does not equal vrl. However, they are interrelated through the equations: vlt/El = vtl/Et, vrt/Er = vtr/Et, vlr/El = vrl/Er.
That will do
We can definitely add ceramic material properties. Are there specific ceramics that you use that you would like included?
Good to see you are on the ball around here. I have already added 99.5% alumina for myself.
What about starting with the basics such as porcelain, bone china, pyrex/borosilicate?
Concrete (that will be hard/impossible as it has aggregate in it, multiphase, unsure). Portland cement.
E glass. S glass.
Here are the most common advanced engineering ceramics for bulk applications:
alumina, silicon carbide, tungsten carbide, silicon nitride (reaction bonded, hot pressed, sintered, properties vary a lot) , aluminium nitride for the electronics people.
Other types of ceramics are used in thin coatings. So I'm not sure how your model copes with that.
PET. Engineering plastics such as UHMWPE, PTFE, PEEK.
Sort of on the same subject, are you able to change the way exponent values are displayed?
I'm not really talking about significant figures. I'm talking about the way the exponents appear in the table. Ideally they should appear in multiples of three for such big numbers. I don't know about the engineers, but materials people like to use Mpa and Gpa (and I suppose other scientists use kPa). Or ksi and msi for Americans.
What I mean is, say it now it shows a property og 1.10 x 10^10, for example. So every single time I look at the list of properties and see 10^7, 10^8 or 10^10, I have to do a quick mental calculation to get the answer into MPa or GPa.
It's easier to just see 11 x 10^9Pa, swap out the 10^9 part for Giga, and you have 11GPa.
The reason I do this is because it is very easy to make mistakes when dealing with large numbers and base units. I know the values are already there. But I already know what the ballpark values are of many materials, and I suppose I just like to double check things are accurate.