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thick spheric shell with difference elastic modulus in tensile compression

摘要:基于理想弹塑性模型,对拉压模量不同的厚壁球壳进行弹塑性分析。不同的内压作用下,厚壁球壳的讨论从弹性分析开始,然后弹塑性分析,最后进行塑性极限分析。求解厚壁球壳各个状态下的应力及位移的大小。对弹塑性边界位置不同分别进行讨论,得出球壳内壁开始屈服的弹性极限压力及球壳整个截面完全屈服的塑性极限压力。

关键词:厚壁球壳;拉压弹性模量;弹塑性分析

Analysis on elasto-plastic of thick spheric shell with difference of elastic modulus of tensile compression

Abstract: According to elastic-perfect plastic model, elasto-plastic analysis of thick spheric shell with the difference of elastic modulus of tensile compression is analyzed .under the difference of internal pressure ,the discussion of thick spheric shell is beginning from elastic analysis ,and then elasto-plastic analysis ,finally plastic limit analysis . the value of stress and displacement of spheric shell in the varied state is gotten .the elasto-plastic boundaries are individual discussed. the elastic limit pressure of shell ,yielded intimately in the inner side and the plastic limit pressure which yielded fully in the total cross-section are obtained.

Keywords: thick spheric shell ; elastic modulus of tensile compression ; elasto-plastic analysis

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