Rotary Fatigue Tester Simulating Complex Axial and Tangential Loads
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Solution Overview
Problem
Existing rotary fatigue testers are limited in their ability to apply forces beyond tangential loads, failing to simulate complex load conditions effectively.
Innovation Solution
A rotary fatigue tester design that incorporates a cylindrical tank, a circulatory loop, a pump, and a holding device connected to motors for applying both axial and tangential alternating loads, with sensors to measure strain, and the capability to introduce corrosive gases and solid particles to mimic erosive environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only tangential force is applied to the test piece, then the device structure is simple, but the testing capability is limited and cannot simulate complex load conditions
Solution Approach 1:
The loading system is divided into separate components: a holding device for axial loading connected to a first motor, and a force-bearing pole for tangential loading connected to a second motor. This segmentation allows each component to perform a specific function independently, enabling complex load simulation while maintaining manageable device structure through modular design
Solution Approach 2:
The rotary fatigue tester is designed to perform multiple functions: it can apply both axial alternating loads and tangential alternating loads simultaneously, and can also introduce corrosive environments. The holding device and force-bearing pole work together to create multi-axial stress states, making the device universally applicable for various fatigue testing scenarios
2Adaptability or versatility
If corrosive gases and solid particles are introduced to simulate erosive environment, then the testing realism is enhanced, but the device complexity increases
Solution Approach 1:
The corrosive environment simulation system merges multiple elements (corrosive gases, liquid, and solid particles) into a single integrated circulatory loop system. The pump circulates this multi-phase mixture through the experimental kettle body, creating a unified corrosive-erosive environment that enhances testing realism without requiring separate independent systems for each environmental factor
Data Source
AI summary
A rotary fatigue tester with complex loads includes a pump, a first motor, a second motor, a circulatory loop, an experimental kettle body, and a holding device. The experimental kettle body is a cylindrical tank, the circulatory loop is located on the experimental kettle body, a pump is located within the circulatory loop and is connected with a corrosive gas pipeline; the holding device is located within the experimental kettle body for fixing a test piece, a force-bearing pole is located at one side of the experimental kettle body for applying a shear force to the test piece, the holding device and the force-bearing pole are connected with the first motor and the second motor respectively. The rotary fatigue tester is able to simultaneously apply the axial alternating load and tangential alternating load to the test piece, for simulating the force of the test piece under complex loads.