An approach for optimization of the wall thickness （weight） of a thick-walled cylinder under axially non-uniform internal service pressure distribution

• Published in: Defence Technology（防务技术） 2017, Vol.13 (3), p.150-157
• Main Author: Onur Güngor
• Format: Article
• Language: Chinese
• Subjects: 厚壁圆筒; 圆筒壁厚; 尺寸优化; 应力计算方法; 残余应力分析; 自增强材料; 载重量; 非均匀
• ISSN: 2214-9147; 2214-9147

Today, improving the weight/load carrying capacity ratio of a part is the matter of studies in most of the scientific and industrial areas.Autofrettage dimensions, the amount of material removed from outer and inner radius while manufacturing and the service pressure applied affect the residual stress distribution throughout the wall thickness and hence the load-bearing capacity of a thick-walled cylinder. Calculation of residual stresses after autofrettage process and optimization of autofrettage outline dimensions by using the amount of service pressures applied are common issues in literature.In this study, mandrel-cylinder tube interference dimensions were renovated by using traditional methods for swage autofrettage process of a gun barrel. Also, the residual stresses in the cylinder after autofrettage process, inside and outside material removal process and the variable service pressure throughout the cylinder applied were taken into consideration and incorporated into the design. By using the constrain