基于有限元的行程可调液压油缸活塞杆断裂力学性能测试
Fracture Mechanical Property Test of Piston Rod of Hydraulic Cylinder with Adjustable Stroke Based on Finite Element Method
焦阳 1张伟 1范永强 1王利军 1师玉璞2
作者信息
- 1. 陕煤集团神南产业发展有限公司
- 2. 西安科技大学材料科学与工程学院
- 折叠
摘要
设计基于有限元的行程可调液压油缸活塞杆断裂力学性能测试方法.以行程可调液压油缸断裂的活塞杆为研究对象,采用有限元分析软件构建液压油缸活塞杆有限元模型.从宏观形貌、拉伸性能、硬度及粗糙度等方面,测试了行程可调液压油缸活塞杆的断裂力学性能.结果表明:经过拉伸和硬度测试发现,试件的弹塑性较差;粗糙度变大是导致行程可调液压油缸活塞杆发生断裂的主要原因;断裂试件的纵向残余应力变化较大,断裂后为 504 MPa.
Abstract
In this paper,a FEM-based method was designed for testing fracture mechanical properties of the hydraulic cylinder's piston rod with adjustable stroke.As for this broken piston rod with adjustable stroke,the FEM analysis software was adopted to construct its finite element model and its fracture me-chanical properties were tested from the aspects of macroscopic morphology,tensile property,hardness and roughness.The tensile and hardness tests show that,the elastic-plastic properties of the specimens becomes poor.The increase of roughness mainly causes this fracture and the longitudinal residual stress of the frac-tured specimen varies greatly and stays at 504 MPa after the fracture.
关键词
活塞杆/行程可调液压油缸/断裂力学性能/有限元分析Key words
piston rod/hydraulic cylinder with adjustable stroke/fracture mechanical property/FEM analysis引用本文复制引用
基金项目
陕西省科技厅陕煤联合基金重大专项(2021JLM-28)
出版年
2024
NETL
NSTL
万方数据