某星载设备的振动夹具设计

为了设计满足某星载设备振动试验需求的振动夹具,文中根据被试件与振动台的接口、试验环境条件、夹具外形与质量静态分析结果以及动强度设计仿真分析结果,设计出了一种合理、易于制备的振动夹具。通过锤击法测定夹具实物的固有频率,验证了本夹具设计的合理性。振动夹具设计需考虑各项约束条件,可通过选择比刚度高的材料减小夹具质量,通过仿真分析可快速完成对夹具的评估,可通过锤击法验证仿真可行度。分析表明本文设计的振动夹具是符合试验要求的,可为以后的振动夹具设计提供参考。

Design of Vibration Fixture for a Certain Space-borne Equipment

To design a vibration fixture which meets the requirements of a space-borne equipment vibration test, based on the test environment and the interface between the tested sample and vibration table, a vibration fixture which is reasonable and easy to manufacture is designed according to the static analysis of shape & weight and the dynamics simulation analysis. Hammering modal experiment is carried out to acquire the fixture''s natural frequency which has verified the reasonability. All kinds of constraint conditions should be considered in the vibration fixture design. Adopting the material with higher stiffness can reduce the weight of fixture. Dynamics simulation analysis can evaluate the fixture quickly. The hammering modal experiment can verify the simulation feasibility. Analysis shows that this vibration fixture meets the vibration test requirements of space-borne equipment, which can be used as a reference for the vibration fixture of space-borne equipment later.