ELASTIC-PLASTIC LIMIT ANALYSIS OF THE COMBINED THICK-WALLED CYLINDER BASED ON THE UNIFIED STRENGTH THEORY

WENGANG AO; XUDONG WANG; HUIYAN ZHANGWUDHICHAI ASSAWINCHAICHOTEZONGMIN LIU

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ELASTIC-PLASTIC LIMIT ANALYSIS OF THE COMBINED THICK-WALLED CYLINDER BASED ON THE UNIFIED STRENGTH THEORY

机译：ELASTIC-PLASTIC LIMIT ANALYSIS OF THE COMBINED THICK-WALLED CYLINDER BASED ON THE UNIFIED STRENGTH THEORY

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This paper adopts the unified strength theory (UST) to deduce the unified solution of the elastic limit, plastic limit and stability limit internal pressures of the thick-walled cylinder and the elastic limit and plastic limit internal pressures of double-layered thick-walled cylinder, and uses the simplified unified solution to draw a conclusion consistent with other literature, demonstrating the correctness of the derivation in this paper. In this paper, examples are used to analyze the impact of diameter ratio and UST parameters on the elastic limit, plastic limit and stability limit of the thick-walled cylinder. The results show that the unified solution increases with the increase in diameter ratio and influence factor of intermediate stress and reduces with the increase in the compres-sive and tensile strength of materials; as the diameter ratio increases, its impact on the improvement of the elastic limit internal pressure is significantly diminished, while its impact on the increase of the plastic limit internal pressure is significant; the prestress-ing force between internal and external cylinders can significantly increase the elastic limit internal pressure of the combined thick-walled cylinder, but it has hardly no impact on the plastic limit internal pressure of the combined thick-walled cylinder. This study can provide the theoretical basis of strength design for the engineering application of the thick-walled cylinder structures, e.g., culvert pipes, composite supports, extrusion dies, cylindrical pressure vessels, air cylinders and gun barrels.

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《International journal of innovative computing, information and control》 |2022年第1期|183-197|共15页
作者
WENGANG AO; XUDONG WANG; HUIYAN ZHANGWUDHICHAI ASSAWINCHAICHOTEZONGMIN LIU;
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作者单位

Nationad Research Base of Intelligent Manufacturing ServiceNo. 19, Xuefu Avenue, Nan'an District, Chongqing 400067, P. R. China,Chongqing Key Laboratory of Manufacturing Equipment Mechanism Design and Control Chongqing Technology and Business University N;

Chongqing Key Laboratory of Manufacturing Equipment Mechanism Design and Control Chongqing Technology and Business University No. 19, Xuefu Avenue, Nan'an District, Chongqing 400067, P. R. China;

Nationad Research Base of Intelligent Manufacturing ServiceNo. 19, Xuefu Avenue, Nan'an District, Chongqing 400067, P. R. ChinaDepartment of Electronic and Telecommunication Engineering Faculty of Engineering King Mongkut's University of Technology Thonburi Bangkok 10140, Thailand;

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Unified strength theory; Thick-walled cylinder; Elastic limit internal pres-sure; Plastic limit internal pressure; Stability limit internal pressure;

ELASTIC-PLASTIC LIMIT ANALYSIS OF THE COMBINED THICK-WALLED CYLINDER BASED ON THE UNIFIED STRENGTH THEORY

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