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| Determination of flexural stiffness for voided plates with parallel circular-tubes |
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| DOI：10.7511/jslx20084099 |
| KeyWord:tubular voided plate,flexural stiffness,methodology for stiffness determination,expression for stiffness ratio,castellated beam |
| ZHOU Chao-yang LIU Shu OUYANG Zhu-zi |
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| Abstract: |
| The flexural stiffness has not yet been well determined for a voided plate with parallel circular-tubes.On the basis of finite element analyses,the average strains over part of length normal to axes of the tubes are still linearly distributed over depth of the plate.Two methods are put forth to decide the equivalent stiffness in this radial direction,which utilize the numerical solutions either by horizontal deformation and definition of stiffness or with vertical deflection and relationship between deflection and stiffness.The results from both methods are well coincident with and verified by one another.Then an empirical expression,being simple and practical,is developed by correlation to calculate the ratio of stiffness in radial to axial direction.It is worth pointing out that the methodology here presented is rational and valuable to solve similar problems. |
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