期刊论文

Construction and analysis of mechanic model of deformation for Al alloy thin-walled component

Liao, Kai(liaokai102@csuft.edu.cn)

中文

哈尔滨工业大学学报

0367-6234

2018

50

5

166-172

10.11918/j.issn.0367-6234.201709069

51475483:国家自然科学基金 2014207:湖南省高等学校科技创新团队支持计划 QJ2012011A:中南林业科技大学青年科研基金重点项目

本校为第一且通讯机构

航空铝合金薄壁构件加工变形与应力场分布有着直接关联.本文结合构件加工后的应力场分布特征,建立薄壁构件的应力-变形力学模型,分析其表面应力和初始应力分布对变形影响的机制,确定应力分布特征与变形特征的对应关系,完成对薄壁件变形解析函数的建立和变形不确定度计算.具体表现为:通过喷砂表面处理对铣削加工后薄壁构件的表面应力进行调节,以获得不同程度的应力-变形场分布,再借助层削法、XRD表面应力测试和三坐标形状测量试验,对不同工艺条件下构件加工变形实验值与函数解析值进行比较分析.结果显示:薄壁构件变形挠度与理论计算值偏差为3~12 μm,偏差处于变形不确定度范围内,解析函数准确性得...

There are direct relations between machining deformation and stress field of aerospace Al-based alloy thin-walled component. With stresses profile characteristics of the component after milling processing, building a mechanical model of stress-deformation analyses that effect mechanism of stress on deformation and then get the corresponding relationship between the both of deformation and stress. The process is as follows: the different degree stress-deformation distributions of the thin-walled component after milling is obtained by shot-peenin...