کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
785416 1466081 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Investigation of residual stresses in thick-walled vessels with combination of autofrettage and wire-winding
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Investigation of residual stresses in thick-walled vessels with combination of autofrettage and wire-winding
چکیده انگلیسی


• Combination of autofrettage and wire-winding in pressure vessels has been presented.
• A new method based on Direct method is presented for wire-winding process.
• Residual hoop stresses are compared in vessels cylinders for different cases.
• The residual hoop stress has a more desirable stress distribution.
• The benefits of the combined vessel are highlighted in comparison with single cases.

Wire-winding and autofrettage processes can be used to introduce beneficial residual stress in the cylinder of thick-walled pressure vessels. In both techniques, internal residual compressive stress will increase internal pressure capacity, improve fatigue life and reduce fatigue crack initiation. The purpose of this paper is to analyze the effects of wire-winding on an autofrettaged thick-walled vessel. Direct method which is a modified Variable Material Properties (VMP) method has been used in order to calculate residual stresses in an autofrettaged vessel. Since wire-winding is done after autofrettage process, the tangent and/or Young's modulus could be changed. For this reason, a new wire-winding method based on Direct Method is introduced. The obtained results for wire-wound autofrettaged vessels are validated by finite element method. The results show that by using this approach, the residual hoop stresses in a wire-wound autofrettaged vessel have a more desirable distribution in the cylinder.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Pressure Vessels and Piping - Volumes 111–112, November–December 2013, Pages 295–301
نویسندگان
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