Balsa Wood Material created for simulations

[Anonymous]

Hi all,

First time poster on here.

I am a teacher at a high school where we are creating a balsa wood bridge for testing compression and tension forces. I have been able to get them to test the bridge using mild steel to show where the weaknesses are. However, I have been trying to create a new Library for Balsa wood.

I have scoured the net to find the different properties, but unfortunately, when I run the simulation it is saying that I have incomplete values and it wont let me do frame analysis.

Has anyone got any experience with creating material libraries and if so could they have a look at my data to let me know how I can improve on it.

Thanks in advance,

Steve

[b_sharanraj]

hi @Anonymous

After looking in to the Properties of Balsa Wood in your attachment I noticed that,

1. Thermal Expansion Co-Efficient Y (.100 µm/(m·°C)) is differ from X & Z (4.000 µm/(m·°C)). As Far i referred to library materials it can't be like that. It has to be same for X, Y & Z.

2. Shear Strength cannot be 0.000 MPa. As is referred in Online Shear Strength of Balsa Wood for

Light Weight is 1.6 MPa

Standard Weight is 3.0 Mpa

Heavy Weight is 4.5 Mpa

You can make these changes after ensuring from your point and try Frame Analysis 🙂

[Anonymous]

Could you share the file you made for balsa as Icannot make it myself

[matt_jlt]

Hi , unless there has been some recent changes to inventor stress analysis, it can not do anisotropic materials such as wood. only isotropic materials such as steel.

Matt.