Compression-Torsion Coupling

Compression-torsion coupling is a mechanical behavior in which axial compression of a structure induces a twist, or conversely a twist induces axial extension or compression. It is a recurring design motif in the chiral mechanical metamaterial patents listed in the source digest.

Recurring patent themes

• Rigidity-variable cells. CN121854550 describes a rigidity-variable compression-torsion chiral metamaterial cell element based on integrated molding.
• Combined coupling modes. CN115750643 describes a chiral mechanical metamaterial structure with both compression torsion coupling and swelling torsion coupling.
• Z-shaped and spatial designs. CN214226520 and CN112820362 describe Z-shaped compression-torsion metamaterial structures; CN112693108 describes a spatial chiral compression-torsion super-structure material; CN118274058 describes a 3D four-chiral pressure-torsion metamaterial structure and its manufacturing method.
• Related coupling modes. CN112045990 describes a chiral auxetic metamaterial with tension-torsion coupling; CN112049886 describes a chiral auxetic metamaterial with compression-shear coupling; CN109822981 describes a 3D cellular metamaterial with a local tension-torsion coupling effect; CN108386472 describes a vibration absorber based on a tension-torsion coupling metamaterial structure.
• Testing. CN116026678 describes a torsion angle measuring clamp for compression torsion mechanical testing of chiral mechanical metamaterials.
• Design methods. CN112836250 describes a lattice structure design for buckling-driven large-angle torsion.

Caveat

The source provides titles only. No measured coupling coefficients, stiffness values or performance results are given, so the list cannot support quantitative claims.