瑞利能量法在求解激光切割机横梁固有频率中的应用

摘要

横梁是数控激光切割机的重要部件，其动态性能的优劣直接影响到加工精度和使用寿命等。利用瑞利能量法可以简便准确地求解横梁的固有频率，避免发生共振，为横梁的优化设计提供可靠的理论依据。%As an important component of CNC laser cutting machine,beam dynamic characteristic affects the machining accuracy and life directly. Rayleigh energy method can be used to solve the natural frequency of the beam easily and accurately and resonance is avoided. It provides reliable theoretical basis for optimal design of the beam.