基于ANSYS液压螺栓拉伸器的研制与分析

Analysis and Design of Hydraulic Bolt Stretcher Based on ANSYS

针对螺栓拉伸器作业工况恶劣的特性,提出一种基于有限元分析与实验相结合的设计方法。运用ANSYS软件对拉伸器关键结构———缸体进行强度校核和结构优化,并制定拉伸器试验方案,对比两者得到的数据。结果表明:初设参数下缸体应力集中强度大于材料的屈服极限,不满足设计要求;优化结构尺寸后,缸体的强度和刚度均满足材料的要求,安全系数得到极大提高;缸体外端应变数据中仿真值与实验值相符,这为该设备的可靠性和安全性提供了设计依据。

According to the characteristics that bolt stretcher working condition was bad, putting forward a kind of design method which was finite element analysis combining with experimental. Using the software of ANSYS to check the strength and optimize the structural of the key structure-tension for cylinder, formulating the tensile test scheme, and comparing the data. The results showed that, the stress concentration strength of the initial parameter cylinder was greater than the material limit yield, which did not meet the design requirements; the strength and stiffness of cylinder both met the material requirements after optimizing the structure size of the cylinder, and the safety coefficient was improved greatly; the simulation strain data and experimental value of the cylinder outer were coincidence, which provided designing evidence for the reliability and safety of the equipment.