Experimental and numerical studies on steel-polyurethane foam-steel–concrete-steel panel under impact loading by a hemispherical head

2021 ◽  
Vol 247 ◽  
pp. 113201
Author(s):  
Lingzhao Meng ◽  
Yonghui Wang ◽  
Ximei Zhai
Keyword(s):  
Polyurethane Foam ◽  
Impact Loading ◽  
Steel Panel ◽  
Numerical Studies

Experimental and numerical studies for buckling and collapse behaviors of a cracked thin steel panel subjected to sequential tensile and compressive loading

2020 ◽  
Vol 157 ◽  
pp. 107059
Author(s):  
Septia Hardy Sujiatanti ◽  
Satoyuki Tanaka ◽  
Shuhei Shinkawa ◽  
Yu Setoyama ◽  
Daisuke Yanagihara
Keyword(s):  
Compressive Loading ◽  
Steel Panel ◽  
Numerical Studies ◽  
Thin Steel

scholarly journals Numerical Studies of the Viscosity of Reacting Polyurethane Foam with Experimental Validation

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 105
Author(s):  
Kay Schäfer ◽  
Daisy Nestler ◽  
Jürgen Tröltzsch ◽  
Ikenna Ireka ◽  
Dariusz Niedziela ◽  
...  
Keyword(s):  
Polyurethane Foam ◽  
Raw Materials ◽  
Polyurethane Foams ◽  
Mathematical Framework ◽  
Physical Conditions ◽  
Transfer Processes ◽  
Linear Partial Differential Equations ◽  
Low Viscosity ◽  
Numerical Studies

Products made of polyurethane foam are manufactured by the chemical reaction of various low-viscosity raw materials and additives. The diversity of different formulations to meet the requirements of the market makes the characterization of their processing and flow properties important for a simple and error-free production. The modeling and simulation of such processes are equally of great importance. This provides additional findings without the expense of real tests and makes it easier to design components. The work described in this paper was carried out against this background. An experimental setup using a rheometer was developed to determine the flow and curing properties of reacting polyurethane foam reproducibly with comparable expansion conditions to industrial processes. The experiment was mathematically modelled to investigate the rheology of reacting polyurethane foams. The mathematical framework consists of coupled, non-linear, partial differential equations for the dynamics and the heat transfer processes in the system. These are solved numerically in 3D using finite volume techniques under adequate physical conditions. The accuracy of two viscosity laws according to the state of the art and their novel combination were investigated in this context. The proposed viscosity model of this study provides accurate results compared to the experiment.

Numerical and experimental studies of polyurethane foam under impact loading

2011 ◽  
Vol 50 (4) ◽  
pp. 1353-1358 ◽  
Author(s):  
Eva Kasparek ◽  
Uwe Zencker ◽  
Robert Scheidemann ◽  
Holger Völzke ◽  
Karsten Müller
Keyword(s):  
Polyurethane Foam ◽  
Impact Loading ◽  
Experimental Studies

scholarly journals Experimental and numerical studies on the behaviour of fibre-reinforced composites subjected to soft impact loading

2019 ◽  
Vol 17 ◽  
pp. 992-1001 ◽  
Author(s):  
Haibao Liu ◽  
Jun Liu ◽  
Cihan Kaboglu ◽  
Hui Chai ◽  
Xiangshao Kong ◽  
...  
Keyword(s):  
Impact Loading ◽  
Reinforced Composites ◽  
Numerical Studies ◽  
Fibre Reinforced Composites
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