摘要
振动试验是验证机载产品环境适应性、使用可靠性的关键环节,振动夹具的优良动特性是振动试验能否成功、试验结果是否可靠的关键因素。以GJB150.16A为基础,阐述了不同机载产品振动夹具的动特性要求,以及夹具动特性有限元分析的理论基础和实施步骤。针对两种不同的机载产品,研究了振动夹具的固有频率和振型、频响传递特性、不同夹持传递点处的响应正交性和差异性。仿真结果验证了夹具的正确性和有效性。
Vibration test is a key step to verify the environmental adaptability and operational reliability of airborne products,and the excellent dynamic characteristics of the vibration fixture are the key factors for the success of the vibration test and the reliability of the test results.In this paper,based on GJB150.16A,the requirements of dynamic characteristics of vibration fixture for different airborne products were described,and the theoretical basis and implementation steps of finite element analysis of dynamic characteristics of fixture were discussed.Aiming at two different airborne products,the natural frequency and mode shape,frequency response transmission characteristics,response orthogonality and difference at different clamping transfer points were investigated.Simulation results verified the correctness and effectiveness of the fixture.
作者
皮志超
孙涛
罗立生
史治宇
PI Zhi-chao;SUN Tao;LUO Li-sheng;SHI Zhi-yu(Shanghai Hangyi Research Institute of High-Tech Development,Shanghai 200082,China;State-Owned Changhong Machinery Factory,Guilin 541003,China;Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《机械工程与自动化》
2021年第1期1-2,6,共3页
Mechanical Engineering & Automation
基金
国家自然科学基金资助项目(11172131)。
