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Critical buckling moment of PFRP simple c-channel beam under the uncertainty of strength of materials |
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| รหัสดีโอไอ | |
| Creator | 1. Chongsin Sookoomjariyapong 2. Sanguan Vongchavalitkul |
| Title | Critical buckling moment of PFRP simple c-channel beam under the uncertainty of strength of materials |
| Publisher | Faculty of Engineering, Khon Kaen Univeristy |
| Publication Year | 2555 |
| Journal Title | KKU Engineering Journal |
| Journal Vol. | 39 |
| Journal No. | 4 |
| Page no. | 407-413 |
| Keyword | Pultruded fiber reinforced plastic,Modulus of elasticity in bending, Shear modulus of elasticity, Critical buckling moment, Monte carlo simulation method |
| ISSN | 0125-8573 |
| Abstract | This study proposed the analytic results of the properties of the pultruded fiber reinforced plastic (PFRP) simple channel beam. The dimensions of the beam specimens which were manufactured in Thailand were 152?43?10 mm. The analysis emphasized on the uncertainty of some material properties that were the modulus of elasticity in bending and shear modulus of elasticity. These material properties were applied to calculate the statistical properties of the critical buckling moment of each beam length. The analysis based on the Monte Carlo Simulation Method (MCSM). The results from this study revealed that the distribution of modulus of elasticity in bending presented in the form of lognormal distribution which had the mean of 30.85 GPa and the coefficient of variant 11.30% and the distribution of shear modulus of elasticity presented in the form of maximum extreme value distribution which had the mean of 2.34 GPa and the coefficient of variant 51.01%. Similarly, the distribution of the critical buckling moment of the beam length from 3.70 m to 4.20 m trended to be Lognormal distribution but the distribution of the beam length from 4.50 m to 5.00 m trended to be Normal distribution. As above mentioned, the analysis results can be used as the data to evaluate the structural reliability in form of the probability of failure of structure which made from the pultruded fiber reinforced plastic. |
