多軸隨機振動環(huán)境的疲勞損傷機理淺析
Fatigue damage methods under multiaxial random vibration environment
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摘要: 多軸隨機振動試驗能夠同時激發(fā)結構在不同方向的模態(tài),使動力響應表現(xiàn)出比單軸振動更為豐富的共振峰,因此對經受多軸振動環(huán)境的產品開展疲勞損傷機理分析很有必要。文章圍繞多軸隨機振動環(huán)境疲勞損傷機理的技術現(xiàn)狀和發(fā)展趨勢進行初步分析,調研多軸隨機振動環(huán)境疲勞損傷機理的研究現(xiàn)狀,為多軸振動試驗及可靠性試驗方法研究提供了理論依據(jù);并為多軸振動系統(tǒng)的原理研究和相關試驗設備的優(yōu)化設計奠定了理論基礎。Abstract: Multiaxial vibration is used as an environmental test method, which is more real and effective than the ordinary vibration test. Fatigue damage methods under multiaxial random vibration are discussed in this paper, including the current state and developing trend of the fatigue damage methods under multiaxial random vibration environment. The proposed theoretical methods can be used in the design of multiaxial test equipment.