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| 引用本文： | 孔娟,袁聚云,潘晓明.???????????????????????[J].力学与实践,2010,32(1):41-45. |
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| 作者姓名： | 孔娟 袁聚云 潘晓明 |
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| 作者单位： | 同济大学，地下建筑与工程系，上海200092 |
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| 摘 要： | 对具有不同拉压模量的厚壁球壳，采用双剪统一强度理论推导了其扩张问题的应力及位移的
统一解. 分析了不同模量、不同模型控制参数对厚壁球壳扩张时的扩张压力和应力场的影响.
结果表明：厚壁球壳弹性极限压力、应力场、位移场等均随着模量控制参数、模型参数的变
化而变化，在$\alpha<1$的情况下(即$E^ + < E^ - $)，可以明显提高球壳的弹
性极限压力$p_e $; 厚壁球壳塑性极限压力与材料的拉压模量无关，与模型参数$\eta
$有关，且随$\eta$的增加，先增大后减小. 因此若采用经典的弹性理论和单一的
模型参数对厚壁球壳进行设计计算，会带来较大的误差.
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| 关 键 词： | 厚壁球壳 拉压弹性模量 双剪统一强度理论 弹塑性分析 |
| 收稿时间： | 2008-12-12 |
ELASTO-PLASTIC ANALYSIS OF THICK SPHERIC SHELL WITH DIFFERENT ELASTIC MODULI FOR TENSILE AND COMPRESSIVE DEFORMATIONS |
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| KONG Juan
,
YUAN Juyun
,
PAN Xiaoming.ELASTO-PLASTIC ANALYSIS OF THICK SPHERIC SHELL WITH DIFFERENT ELASTIC MODULI FOR TENSILE AND COMPRESSIVE DEFORMATIONS[J].Mechanics and Engineering,2010,32(1):41-45. |
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| Authors: | KONG Juan YUAN Juyun PAN Xiaoming |
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| Institution: | 1;Department of Geotechnical Engineer/a>;Tongji University/a>;Key Laboratory of Geotechnical and Underground Engineering/a>;Shanghai 200092/a>;China |
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| Abstract: | Based on the twin shear unified strength theory and for materials with different elastic moduli in tension and compression,this paper derives unified solutions for the stress and displacement fields in a thick spherical shell in expansion.The influences of several factors are analyzed,including different elastic moduli in tension and compression,different parameters in models and the development of plastic zone.The results show that the elastic ultimate expansion pressure,stress and displacement fields depe... |
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| Keywords: | thick spherical shell elastic moduli in tension and compression twin shear unified strength theory elasto-plastic analysis |
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