局部板架的振动计算研究

Vibration about Local Structural Stiffened Plate

采用直接简化计算的方法对船上常见的局部板架结构的固有频率进行计算和分析研究。考虑到船上常见的局部板架结构和板架所处环境的不同,分3种不同类型的板架,同时考虑所处空间介质和船体内环境的不同,分别进行研究和计算;与激励源相比后适当修改板架的设计加强方式,以达到初期设计阶段避免船体局部共振的目的。

This paper calculates and analyses the natural frequency of the common local stiffened plate on ships by the simplified method.Three typical different types of rectangular plate are studied and calculated with the consideration of different space medium and surrounding conditions inside the ship,and their natural frequencies are compared to the excitation frequencies to modify the strength method for the design of stiffened plates in order to avoid the local resonance in the initial design stage.