In Solidworks simulation, can you please tell me:
How to make a "connection" between beam elements?; despite the fact that the 3D model already gives the points of contact
Fill in the mechanical properties of wood, to obtain relevant results – Orthotropic material? – and how to orient it according to the length of the beam
Finally, how to force the "large displacement" option on a "beam" calculation
Hello
Could you show your problem with the screen or part concerned?
For large displacements, the option is activated as indicated in the link below. But maybe you have already done it.
Resolving Large Displacements - 2013 - SOLIDWORKS Design Help
Hello,
By default, the " connections " between beams are embeddings at the junction of the elements.
To obtain a rotulation between two elements, at least one of them must be defined as a " Member "; The connections at both ends are then ball joints, and the bar is only used in tension/compression.
To change a beam into a member: right-click on the element in the construction tree, option [Change Definition], checkbox [Bar].
This same menu allows you to modify in detail the connections at the two ends of a beam: pivot, slide or à la carte linkage.
Wood, a vast question...
If the structure is modeled as beams or members, each element is processed in one-dimensional (RdM), and is only subjected to Tension/Compression, Bending and Torsion.
Under these conditions, there is no need to define an orthotropic material, as the constants of elasticity (Young's modulus, Coulomb's modulus and Poisson's ratio) must be defined in the direction of the beam alone. An isotropic material is perfectly suitable.
It is clear that the direction of the beam must coincide with the direction of the wood fibres.
The orthotropy of wood is to be reserved for truly 3D parts, subjected to complex stresses.
And the definition of the material is a hassle. Cf. directions of the coordinate system associated with an orthotropic material.
Unless I am mistaken, the " long displacements " option is not offered for a structure composed only of beams or bars. It only applies if at least one element is treated in volume. It is generally offered automatically by SW Simulation. See the link proposed by @FRED78 to force its use.
Thank you; For long trips, I have already done what is necessary
See you soon
Thank you for your help; I transformed 3D elements into beams, but for contact links on stopped in the 3D model, the solver finds no boundary conditions, see my image below
Hello,
After a few tests on a structure similar to yours, I deduce that linear contacts are not taken into account between beams.
To get around the problem, I made a chamfer located at the end of each horizontal beam so that I had a surface contact.
If the surface area is large enough, the contact is well detected, and the calculation proceeds normally.
Thank you for this feedback
that's what I tried to do on the 3D calculation, before I realized that it was better to use beam elements
