Thermoelastoplastic deformation of complexly reinforced shells

被引:1
|
作者
Nemirovskii, Yu. V. [1 ]
Yankovskii, A. P. [1 ]
机构
[1] Russian Acad Sci, Inst Theoret & Appl Mech, Siberian Branch, Novosibirsk 630090, Russia
关键词
composites; metal composites; reinforcement; shells; thermoelastic deformation; thermoelastoplastic deformation; load-carrying capacity;
D O I
10.1007/s11029-006-0060-1
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The problem on the elastoplastic deformation of reinforced shells of variable thickness wider thermal and force loadings is formulated. A qualitative analysis of the problem is carried out and its linearization is indicated. Calculations of isotropic and metal composite cylindrical shells have shown that the load-carrying capacity of shell structures under elastoplastic deformations is several times (sometimes hi, an order of magnitude) higher than under purely, elastic ones: the heating of shells with certain patterns of reinforcement sharply reduces their resistance to elastic, deformations, but only slightly affects their resistance to elastoplastic ones; not always does the reinforcement in the directions of principal stresses and strains provide the greatest load-carrying capacity of a shell: there are reinforcement schemes that ensure practically the same resistance of shells at different types of their fastening.
引用
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页码:491 / 506
页数:16
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