Keywords: mortise and tenon design, finite element analysis, topology optimization

The stability of mortise and tenon structures needs to be quantitatively verified through digital means, and traditional empirical design can no longer meet complex modeling requirements.

Refactoring the design process:

Parametric modeling:

Using the Grasshopper plugin to establish a mortise and tenon geometric relationship library, adjust parameters such as tenon width and mortise depth through sliding bars, and automatically generate 30+variant models.

Mechanical simulation verification:

Import the model into ANSYS Workbench, apply vertical load (500N) and horizontal torque (20N · m), simulate actual usage scenarios, and optimize the stress distribution of the mortise and tenon contact surface.

Topology optimization for weight reduction:

For large wooden components, algorithms are used to remove 30% -50% of non load bearing materials, reducing wood consumption while ensuring strength.

Engineering Practice:

A restoration project of an ancient building digitally restored the arch of wooden architecture structure. Through simulation, it was found that the traditional dovetail tenon was easy to loosen under the action of lateral force. After using the "double dovetail+pin" composite structure, the shear strength increased by 2.3 times.

Tool chain recommendation:

Modeling: Rhino+Grasshopper

Simulation: SolidWorks Simulation

Optimization: Altair OptiStruct