The model does not converge.

[wu8802]

Dear STKO-Team
I am trying to build a simplified timber frame-shear wall model. The beam units are hinge beams element for articulation, and truss are created in the interior, with the upper truss connected to the beam-column nodes by equalDOF, and the lower truss and column cemented to the bottom.
The centres of the upper and lower truss are connected by a zero-length element, which has a material eigenstructure of Pinching4, to simulate the performance of the internal shear wall.
But the run results show the following problem, what is wrong with my model?

[STKO Team]

Sorry but from the model I don't quite understand what you are trying to do.
The trusses in the middle are split and I don't understand why.
Also the boundary conditions are strange.
It's better if you draw a sketch of what you want to do before doing the numerical model

[wu8802]

Thanks for your reply.
I want to simulate the performance of a shear wall using truss and zero length element.
When the frame is subjected to a horizontal force, the truss transfers the force to the zero length element（as an internal spring）
I am attaching my simplified model drawing as an attachment, can you help me to see it?
Thank you very much.