Experimental and simulation studies on fatigue behavior of laminated glass having polyvinyl butyral and ethyl vinyl acetate interlayers

Abstract

Cyclic fatigue strength (CFS) of laminated glasses (LGs) with different interlayers and their different nominal thicknesses were compared. The effect of interlayer thickness, cyclic bending fatigue load, and interlayer type on CFS is clearly observed from this brief study. It was found that the LG‐PVB has comparatively lower CFS than LG‐EVA. There is an increment in CFS with an increment in critical interlayer thickness (significantly for an increment from 0.38 to 0.76 mm) in both LG‐EVA (prominent) and LG‐PVB. The maximum deformation at failure load at the corresponding number of cycles is obtained using the finite element model. The strain‐life relations for LG samples were established and shown by surface plots. The results of finite element analysis previously established fracture models were used to explain the fracture patterns of the LG samples. The conclusions of the study are useful for the selection of LG in fatigue prone LG structures.

Novel method for improving fatigue behaviour of laminated glass

“…Explicit Dynamics Module in ANSYS 14.5 (transient analysis) was used for simulating the fatigue test. The properties of glass and PVB are taken from Vedrtnam and Pawar (Table ). The loading and boundary conditions were taken similar to the experimentation.…”

“…The material properties of each layer were defined. The linear elastic material model is followed during simulation . The tetrahedron and fine mesh (number of nodes 25 872, number of elements 5966) was used; grid refinement study was conducted; however, insignificant changes were observed.…”

“…The linear elastic material model is followed during simulation. 65,66 The tetrahedron and fine mesh (number of nodes 25 872, number of elements 5966) was used; grid refinement study was conducted; however, insignificant changes were observed. The maximum deformation (MD) is obtained for cyclic loading taking RPM 1200, maximum number of cycles at which failure has occurred in experiment, and associated value of R. The total number of cycles withstand by the samples was divided by 1200 (RPM of fatigue testing machine) for determining duration for which the cyclic bending load (from minimum to maximum and maximum to minimum values) is applied to the LG sample.…”

Tensile Strength and Moisture Absorption of Sugar Palm-Polyvinyl Butyral Laminated Composites

“…In the aerospace industry, it is used in airplane windows, while for architectural purposes, it is used as glass panels for buildings. By using laminated glass, the safety, security, fire resistance, and sound attenuation properties can be enhanced [ 16 ]. Moreover, laminated glass can also resist high impacts such as bullets and blast loads, as well as being applicable for safety and security purposes such as protection against hurricanes and cyclones.…”

Flow pattern determination for circular staggered cylinders in cross flow using CFD

“…The flow around bluff bodies, vortex formation, mechanisms of flow separation, the behaviour of the wake, and fluid-structure interactions are widely discussed. 1 The flow around bluff bodies of cylindrical shape has been studied considerably owing to its engineering importance in designing structures, acoustic emission dynamics, and fluid flow-induced vibration. [2][3][4][5][6][7][8][9] The bridge constructions, ad hoc defence structures, offshore platforms, tall buildings, heat exchangers, electrical transmission lines could break due to the vibration and oscillatory force; therefore, analysis of cylinder wake is significant.…”