摘要
为了提高船用液压联轴器的承载能力,需对联轴器外套进行自增强处理.采用线性强化模型,得到了液压联轴器外套自增强卸载后的残余应力、自增强压力和安装后的应力公式.公式表明最佳径比不仅与材料的屈服极限、弹性模量、线性强化弹性模量有关,还与鲍辛格效应系数有关。结合《船标》中规定尺寸进行了自增强分析,结果表明自增强外套的承载能力与非自增强外套的相比提高近50％.
Autofrettage in outer sleeves is used to improve carrying capacities of hydraulic coupling. Linear hardening model is used for residual stresses after autofrettage pressurization and after autofrettage depressurization. It is indicated that the best ratio of external radius to inner radius relates not only to the yielding limit, elastic modulus and linear strengthening elastic modulus but also to Bauschinger effect factors. The calculated results for the sizes given by CB*3235-84 shows that compared with non autofrettaged ones, carrying capacities of autofrettaged outer sleeves increases by nearly 50 percent.
出处
《力学与实践》
CSCD
北大核心
2005年第1期18-21,共4页
Mechanics in Engineering
