The stress distribution and strength of wind power spindle forging is an important index to evaluate its structural performance and reliability. The following will introduce the stress distribution characteristics of wind power spindle forging and strength evaluation methods.
- Stress distribution characteristics:
Wind power spindle forging is subjected to complex mechanical loads during operation, so its stress distribution has the following characteristics:
- Non-uniform distribution: Due to the influence of wind power, the stress on the wind power spindle forging is not uniform. Usually, the impeller end and the generator end are stressed, which is because the impeller is subjected to wind pressure load, and the generator end is affected by torque and speed.
- Maximum stress point: there is a concentration of stress on the wind power spindle forging parts, these parts are usually the most stressed place, but also prone to fracture and fatigue of the key position. Common maximum stress points include the journal and shoulder of the spindle forging.
- Strength evaluation method:
In order to ensure the safety and reliability of wind power spindle forging, it is necessary to carry out strength evaluation. Commonly used strength assessment methods include the following:
- Analytical method: Using empirical formula, theoretical analysis and other methods according to the geometry and load of the wind power spindle forging, calculate the stress distribution and strength of the component.
- Numerical simulation method: Using finite element analysis and other numerical simulation methods, the wind power spindle forging is modeled as a finite element model, and the stress analysis is carried out under given boundary conditions to obtain the stress distribution and strength evaluation results.
- Experimental test method: load test or fatigue test is carried out on the actual wind power spindle forgings to monitor the stress change and fracture, which is used to verify the strength design and evaluate the results.
In practical application, the strength evaluation of wind power spindle forging is generally carried out by the combination of numerical simulation and experimental testing. Numerical simulations can provide more detailed and comprehensive stress distribution characteristics, while experimental tests can verify the simulation results and provide real performance data.
In general, for the strength evaluation of wind power spindle forgings, it is necessary to consider its complex load and stress distribution, adopt appropriate evaluation methods for accurate evaluation, and ensure its safety and reliability during the design life.
