الفهرس | Only 14 pages are availabe for public view |
Abstract A Bent Laminated Glass has recently been used in the residential and commercial structures, but its design isn’t present in the curves and tables at the ASTM E1300. Therefore, it has become a need for architects to use the basis for this type of glass. To the best of knowledge authors, no one has studied the bent laminated glass in detail. Architectural glass designers in the United States and many other parts of the world have adopted ASTM International Standard E1300, Standard Practices for Determining Load Resistance of Glass in Buildings, and Glass Structures Load Resistance (LR) as the primary source for determining The ASTM E1300 non-factorial stress diagram (NFL) for flat rectangular glass sheets is based on surface stress determined using a nonlinear finite difference model developed in the early 1980s. The 2016 edition of ASTM E1300 allows analytical methods to be used to determine the LR of glass lites. The main analysis tools available to engineers today are based on the finite element method rather than the finite difference method. The authors developed a nonlinear finite element model and applied a glass failure prediction model (GFPM) to the output of the nonlinear finite element model to simulate flat rectangular glass lites and Bent glass lites. The authors calculated the failure probability and LR. Analysis results using three nonlinear finite element models are described concerning the requirements of ASTM E1300. Bent glass lites are used for architectural requirements as curtain walls in modern buildings and are exposed to wind pressure. In this work, experimental tests and finite element analysis are performed to study the behavior of Bent glass sheets under uniform compressive loading. A thin Bent aluminum lite simulating a monolithic glass lite was tested [1] because of the similarity of Young’s modulus and Poisson’s ratio of aluminum and glass. Four Bent Glass Panes with different thicknesses were experimentally tested for failure under compression load. Experimental results were compared with ii finite element; FE analysis with the Abaqus program. To simulate a uniform pressure load on the test lite, the author created a closed chamber as a support system for the test lite and glued it to the chamber with structural silicone. The internal air in the chamber was evacuated to simulate a positive pressure on the outer surface of the lite under test. A displacement transducer and strain gauge were attached to the tested system to measure the displacement and strain as the pressure in the chamber decreased. A numerical sensitivity analysis was performed using ABAQUS 6.14 software to find suitable element types and support conditions that the experimental model could simulate. The results of the analysis were presented and discussed. Current research proves that the shell element is the best element capable of simulating a thin Bent glass lite. |