Double-lug double-shaft tension-torsion fatigue test loading device
By designing a biaxial tensile-torsional fatigue test loading device with double lugs, the problem of fatigue characteristic evaluation of double lug structures under biaxial loads was solved, reliable design data was provided, and high-precision fatigue performance evaluation and failure mode analysis were achieved.
Patent Information
- Application Number
- CN202520622907.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-04-24
- Estimated Expiration
- 2035-04-03
AI Technical Summary
Existing technologies are insufficient to effectively assess the fatigue characteristics and failure modes of double-eared structures under the coupled effects of axial tensile and compressive loads and rotational loads around the bolt hole axis, resulting in a lack of reliable data support for fatigue strength design.
A dual-ear biaxial tensile-torsional fatigue test loading device was designed. Axial tensile and compressive loads are applied by an actuator, and rotational loads around the bolt hole axis are achieved by a lateral loading adapter plate and a spherical bearing. Combined with displacement and angle sensors for monitoring, the fatigue performance of the dual-ear plates under biaxial loads is simulated.
It enables accurate evaluation of the fatigue performance and failure mode of the double-ear structure under biaxial tensile and torsional loads, provides reliable design data support, and the device has a simple structure, low cost, high stability of loading waveform, and an error of less than 3%.