Topic
Sandwich panel
About: Sandwich panel is a research topic. Over the lifetime, 4665 publications have been published within this topic receiving 49812 citations.
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TL;DR: In this article, the authors present a numerical study of a simply-supported sandwich panel that is based on the mathematical formulation that appears in part I. The results reveal a significant reduction of the eigenfrequencies as well as a shifting of eigenmodes from higher modes to lower ones with increasing temperature.
23 citations
TL;DR: A fundamental investigation of the feasibility of producing lightweight structural panels using ultrasonic consolidation (UC) was undertaken in this paper, where a series of experiments were performed to understand the issues associated with sandwich structure fabrication, including peel test experiments which evaluated the bond strength for various geometric configurations.
Abstract: A fundamental investigation of the feasibility of producing lightweight structural panels using ultrasonic consolidation (UC) was undertaken. As a novel solid freeform fabrication technology, UC utilizes both additive ultrasonic joining and subtractive CNC milling to enable the creation of complex aluminum structures with internal geometry at or near room temperature. A series of experiments were performed to understand the issues associated with sandwich structure fabrication using UC, including peel test experiments which evaluated the bond strength for various geometric configurations. The honeycomb lattice was found to offer the best core configuration due to its ability to resist vibration from the sonotrode and provide adequate support for pressure induced by the sonotrode. UC was found to be capable of producing lightweight and stiff structures, including honeycomb and other sandwich panels, without the use of adhesives. An effective manufacturing process plan for fabricating structural panels was ...
23 citations
TL;DR: In this paper, an analytical three-dimensional transient solution of a multi-layer specially orthotropic panel with finite geometry subjected to an arbitrarily distributed transverse loading is presented, where Fourier or Laplace transformation in time and enforcing the continuity of traction and displacement components between the adjacent layers are applied to achieve material damping.
23 citations
TL;DR: In this article, a finite element model for the prediction of dynamic responses of trapezoi is proposed to improve the blast performance of trapezoidal corrugated core sandwich panel under air blast loading.
Abstract: This research aims to improve the blast performance of trapezoidal corrugated core sandwich panel under air blast loading. A finite element model for the prediction of dynamic responses of trapezoi...
23 citations
TL;DR: In this paper, a new form of bi-directional Load-Self-Cancelling (LSC) sandwich panel is proposed, which is designed to cancel a certain amount of load during blast event owing to its arching geometry.
Abstract: A new form of bi-directional Load-Self-Cancelling (LSC) sandwich panel is proposed in this paper. An array of square dome shaped steel sheet as core of the proposed sandwich panel is designed to cancel a certain amount of load during blast event owing to its arching geometry. The blast resistance and energy absorption capabilities of the sandwich panel are investigated numerically by using finite element analysis software LS-DYNA. The peak deflection of centre point on back face sheet, internal energy and peak boundary reaction forces are compared among monolithic plate, multi-arch uni-directional LSC structure, sphere dome structure and the proposed bi-directional LSC square dome sandwich panel. It is found that using the proposed bi-directional LSC square dome leads to 69%, 48% and 56% reduction in the out-of-plane boundary reaction force as compared to the flat plate, multi-arch panel and grid sphere panel, respectively. In addition, parametric studies of the influences of dome number, height, and layer material on the performances of the proposed bi-directional LSC sandwich panel subjected blast loads of different intensities are carried out to investigate the panel configuration on the effectiveness of its blast resistance and load-self-cancelling capability. The results demonstrate the superiority of the sandwich panel with the proposed bi-directional LSC core.
23 citations