When I was in high school a hundred years ago, we used a fairly simple FEM program where you could calculate stress and deformation in simple two-dimensional truss structures, like roof trusses. If I remember correctly, it was called FEMSOL. That must have been around 1987.
Now I need to do some calculations on roof trusses that are going to be used on a small cottage on an island. The transportation of materials to the island will be the most complicated part of the construction. Therefore, it's important to minimize the amount of material and preferably prepare all the parts at home, like some kind of puzzle.
Is there any simple, preferably free, program that can be used to do FEM calculations on a two-dimensional truss structure, like a roof truss?
Additionally, I will need to know the E-modulus and also the maximum allowable stress in lumber. What does lumber weigh? 700 kg*m^-3?
Now I need to do some calculations on roof trusses that are going to be used on a small cottage on an island. The transportation of materials to the island will be the most complicated part of the construction. Therefore, it's important to minimize the amount of material and preferably prepare all the parts at home, like some kind of puzzle.
Is there any simple, preferably free, program that can be used to do FEM calculations on a two-dimensional truss structure, like a roof truss?
Additionally, I will need to know the E-modulus and also the maximum allowable stress in lumber. What does lumber weigh? 700 kg*m^-3?
I'm answering myself:
I found a free calculation service here:
Online Structural Engineering Software | Beam Bending | Curve Fitting | Stress Analysis of Truss, Shell & Plate | Buckling
I found a free calculation service here:
Online Structural Engineering Software | Beam Bending | Curve Fitting | Stress Analysis of Truss, Shell & Plate | Buckling
Here is a lot of info: http://www.traguiden.se
However, it requires registration. There is everything possible here, including a chapter on dimensioning with tables for different woodworking constructions.
However, it requires registration. There is everything possible here, including a chapter on dimensioning with tables for different woodworking constructions.