内翻圆管的弹塑性分析

IF 0.6 4区 工程技术 Q4 MECHANICS
G. M. Sevastyanov
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引用次数: 0

摘要

文章提出了刚性垫圈中圆管内翻问题的分析解决方案。文章获得了径向应力大小的公式,该应力对管道和垫片之间的粘附力起作用。解法适用于任意不可压缩的超弹性材料,其超弹性势只取决于左 Cauchy-Green 变形张量(新胡肯固体的各种广义)的第一个不变量或对数 Hencky 应变张量(不可压缩 Hencky 材料的各种广义)的第二个不变量。解决方案考虑了管道侧表面邻近区域的塑性流动。既考虑了理想塑性材料,也考虑了一般类型的各向同性硬化材料。对于后者,给出了一个求解方案;在线性硬化材料的特殊情况下,得到了一个闭式求解。对于完全塑性模型,新胡克实体、不可压缩的亨茨基材料和根特材料都得到了闭式解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Elastic–Plastic Analysis of a Circular Pipe Turned Inside Out

Elastic–Plastic Analysis of a Circular Pipe Turned Inside Out

The article presents an analytical solution for the problem of a circular pipe turning inside out in a rigid gasket. Formulas for the magnitude of the radial stress, which is responsible for the adhesion between the pipe and the gasket, have been obtained. The solution is obtained for an arbitrary incompressible hyperelastic material with a hyperelastic potential that depends only on the first invariant of the left Cauchy–Green deformation tensor (various generalizations of the neo-Hookean solid) or on the second invariant of the logarithmic Hencky strain tensor (various generalizations of the incompressible Hencky material). The solution considers the occurrence of plastic flow in areas adjacent to the lateral surfaces of the pipe. Both ideally plastic and isotropically hardening materials of a general type are considered. For the latter, a solution scheme is given; in the particular case of a linearly hardening material, a closed-form solution is obtained. For the perfect plasticity model, a closed-form solution was obtained for the neo-Hookean solid, for an incompressible Hencky material, and for the Gent material.

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来源期刊
Mechanics of Solids
Mechanics of Solids 医学-力学
CiteScore
1.20
自引率
42.90%
发文量
112
审稿时长
6-12 weeks
期刊介绍: Mechanics of Solids publishes articles in the general areas of dynamics of particles and rigid bodies and the mechanics of deformable solids. The journal has a goal of being a comprehensive record of up-to-the-minute research results. The journal coverage is vibration of discrete and continuous systems; stability and optimization of mechanical systems; automatic control theory; dynamics of multiple body systems; elasticity, viscoelasticity and plasticity; mechanics of composite materials; theory of structures and structural stability; wave propagation and impact of solids; fracture mechanics; micromechanics of solids; mechanics of granular and geological materials; structure-fluid interaction; mechanical behavior of materials; gyroscopes and navigation systems; and nanomechanics. Most of the articles in the journal are theoretical and analytical. They present a blend of basic mechanics theory with analysis of contemporary technological problems.
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