喷丸成形预应力状态归一化表征研究  

Investigation on Normalized Characterization of Pre-Stress State for Shot Peen Forming

作　　者：高国强 牛博雅 霍元泽 张万瑜 孙雨桐 张贤杰[1] GAO Guoqiang;NIU Boya;HUO Yuanze;ZHANG Wanyu;SUN Yutong;ZHANG Xianjie(Northwestern Polytechnical University,Xi’an 710072,China;AVIC Xi’an Aircraft Industry Group Company Ltd.,Xi’an 710089,China)

机构地区：[1]西北工业大学,西安710072 [2]中航西安飞机工业集团股份有限公司,西安710089

出　　处：《航空制造技术》2025年第4期97-102,111,共7页Aeronautical Manufacturing Technology

摘　　要：本文提出了一种表征喷丸成形预应力状态的归一化模型,采用预应力参数对板件弯曲喷丸变形的预应力状态进行表征,建立起考虑预应力状态影响的板件喷丸变形曲率与喷丸参数之间的量化关系,设计实施了预应力喷丸成形试验,对所建立的归一化模型进行验证。结果表明,当预应力状态以归一化的预应力参数表征时,可以实现板件预应力弯曲喷丸变形行为在[0,1]预应力参数区间上的量化描述。在给定的喷丸参数下,板件沿预弯方向的变形曲率与预应力参数之间呈线性关系,与喷丸气压成正比,与喷丸速度之间成拟反比关系,与板件厚度的3/2次幂成反比,而各比例系数均由预应力参数决定。A normalized model is proposed for the characterization of pre-stress state in shot peen forming process,in which the pre-stress of plates undergoing bending shot-peening deformation state is characterized by a pre-stress parameter.Quantitative relations are established between the curvature of shot peened plates and shot peening parameters with the inclusion of the influence of pre-stress state.Pre-stressing shot peen forming experiments were designed and carried out to verify the validity of the normalized model.Results show that quantitative formulations can be established on a normalized pre-stress parameter interval[0,1]for the description of the bending deformation behavior of pre-stress shot peened plates.When certain shot peening parameters are given,the curvature of the shot peened plate in the pre-bending direction is linearly related to the pre-stress parameter,proportional to shot peening pressure,quasi-inversely proportional to peening speed,and inversely proportional to the 3/2 power of the plates of thickness,while all the proportionality coefficients are determined by the pre-stress parameter.

关 键 词：喷丸 喷丸成形 预应力 预应力喷丸 归一化 表征方法 

分 类 号：R28[医药卫生—中药学]