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| 对加劲板在局部和整体弯曲作用下的后屈曲及强度的半解析分析 | |
| 作者姓名： | Lars Brubaka Jostein Hellesland |
| 摘 要： | 对经受平面内双轴及剪切荷载作用下的带缺陷加劲板的预先和后屈曲分析采用半解析方法分析。结合了Rayleigh-Ritz方法的大变形理论,可以分析板局部及整体的平衡。采用vonMises屈服标准预测的极限强度作为膜压力的破坏标准。采用Fortran程序计算的结果也被非线性有限元分析的结果证实。该法因此也适用于结构优化设计以及可靠性研究。 |
| 关 键 词： | 加劲板 任意加劲肋布置 极限强度 半解析方法 大变形理论 局部-整体弯曲交互作用 屈曲后屈曲 Rayleigh-Ritz方法 |
Semi-Analytical Postbuckling and StrengthAnalysis of Arbitrarily Stiffened Platesin Local and Global Bending |
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| Lars Brubaka,Jostein Hellesland.Semi-Analytical Postbuckling and StrengthAnalysis of Arbitrarily Stiffened Platesin Local and Global Bending[J].Steel Construction,2008(5). | |
| Authors: | Lars Brubaka Jostein Hellesl |
| Abstract: | A semi-analytical method for pre-and postbucklinanalysis of imperfect plates with arbitrary stiffener arrange-ments, subjected to in-plane biaxial and shear loading, ipresented. By using large deflection theory in combinatiowith the Rayleigh-Ritz approach on an incremental form, thmethod is able to trace both local and global equilibriumpaths. Ultimate strength predictions are made using the voMises' yield criterion applied to the membrane stresses acollapse criterion. A Fortran computer program based on th... |
| Keywords: | Stiffened plates Arbitrary stiffener arrange-ment Ultimate strength Semi-analytical method Large de-flection theory Local-global bending interaction BucklingPostbuckling Rayleigh-Ritz method |
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