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Finite Element Investigation of Shear Capacity of Locally Corroded End Panel of Steel Plate Girder
Nauman Khurram,Eiichi Sasaki,Hiroshi Katsuchi,Hitoshi Yamada 한국강구조학회 2013 International Journal of Steel Structures Vol.13 No.4
This study discusses the effect of local corrosion damages nearby the bearing region including the bearing stiffener andadjacent web damage on the ultimate shear and post-buckling strength of steel plate girder bridges. A computer packageABAQUS is utilized for the verification and extension of the numerical study. Various corrosion damage cases, specifically thebearing stiffener are studied considering different damage thickness and damage heights. The study concludes that local damageon bearing stiffener damage is more fatal than the local web damage for the shear resistance of the plate girder. Further, someempirical relationships are also derived to assess the residual shear capacity of the locally corroded plate girder at the bearingregion.
Nauman Khurram,Eiichi Sasaki,Hiroshi Katsuchi,Hitoshi Yamada 한국강구조학회 2014 International Journal of Steel Structures Vol.14 No.3
The present study deals with the effect of uniform and non-uniform local corrosion damages at the bearing stiffener andnearby web on the bearing capacity of plate girder. Five plate girder ends simulated with different uniform and non-uniformtypes of corrosion damage, at the base of the bearing stiffener are used in the experimental program. The experimental resultsare modeled and verified on a Finite Element (FE) software ABAQUS, considering shell-solid coupling elements formulation. The study is further extended to various damage cases i.e., stiffener damage, stiffer plus web damages etc. considering differentdamage heights and residual thicknesses. The study concludes that minimum thickness within any damage height may be usedto simulate the corrosion damage in a FE analysis. At the end, some empirical relationships are also proposed to estimate thebearing strength of the plate girder affected by the local corrosion damage at plate girder end.
Nauman Khurram,Eiichi Sasaki,Hiroshi Katsuchi,Hitoshi Yamada 한국강구조학회 2015 International Journal of Steel Structures Vol.15 No.1
The present study deals with the effect of uniform and non-uniform local corrosion damages at the bearing stiffener and nearby web on the bearing capacity of plate girder. Five plate girder ends simulated with different uniform and non-uniform types of corrosion damage, at the base of the bearing stiffener are used in the experimental program. The experimental results are modeled and verified on a Finite Element (FE) software ABAQUS, considering shell-solid coupling elements formulation. The study is further extended to various damage cases i.e., stiffener damage, stiffer plus web damages etc. considering different damage heights and residual thicknesses. The study concludes that minimum thickness within any damage height may be used to simulate the corrosion damage in a FE analysis. At the end, some empirical relationships are also proposed to estimate the bearing strength of the plate girder affected by the local corrosion damage at plate girder end.
Aakash Ali,Muhammad Ali Nasir,Muhammad Yasir Khalid,Saad Nauman,Khubab Shaker,Shahab Khushnood,Khurram Altaf,Muhammad Zeeshan,Azhar Hussain 대한기계학회 2019 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.33 No.9
Natural fiber composites have great potential for reducing the product cost, lowering weight and enhancing renewability. Functionality and performance of natural fibers can be enhanced many folds using them together with synthetic fibers. Hybridization of carbon and low-cost natural jute fiber offers a sustainable hybrid composite having high modulus and mechanical strength. This study investigates flexural behavior of carbon/jute epoxy composites experimentally and numerically. Also, impact response is characterized through drop weight method. Study concludes that flexural strength decreases with increase in jute percentage. Simulation of flexural behavior diverges more than 10 % from experimental results. This anomaly is due to waviness of fiber resulting in heterogeneous property distribution in composites. Further, the fracto-graphic study revealed modes of failure. The drop weight impact tests reveal increased damage area with increase in jute percentage.