Author
M.P. Arunkumar
Other affiliations: K L University, National Institute of Technology, Karnataka
Bio: M.P. Arunkumar is an academic researcher from Xi'an Jiaotong University. The author has contributed to research in topics: Sandwich panel & Honeycomb structure. The author has an hindex of 6, co-authored 15 publications receiving 182 citations. Previous affiliations of M.P. Arunkumar include K L University & National Institute of Technology, Karnataka.
Papers
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TL;DR: In this article, the results of numerical studies carried out on vibro-acoustic and sound transmission loss behaviour of aluminium honeycomb core sandwich panel with fibre reinforced plastic facings were presented.
62 citations
TL;DR: In this paper, the influence of core geometry on vibration and acoustic response characteristics of sandwich panels which are used as aerospace structures is studied. And the results show that for a honeycomb core sandwich panel, the better acoustic comfort can be achieved by reducing the core height and increasing the face sheet thickness.
50 citations
TL;DR: In this paper, a truss core sandwich panel is filled with polyurethane foam (PUF) to achieve better vibro-acoustic and sound transmission loss characteristics.
45 citations
TL;DR: In this paper, the impact of core geometry on sound transmission characteristics of sandwich panels has been explored and it is observed that, for a honeycomb core sandwich panel, one can select cell size as the parameter to reduce the weight with out affecting the sound transmission loss.
Abstract: Sandwich panel which has a design involving acoustic comfort is always denser and larger in size than the design involving mechanical strength. The respective short come can be solved by exploring the impact of core geometry on sound transmission characteristics of sandwich panels. In this aspect, the present work focuses on the study of influence of core geometry on sound transmission characteristics of sandwich panels which are commonly used as aircraft structures. Numerical investigation has been carried out based on a 2D model with equivalent elastic properties. The present study has found that, for a honeycomb core sandwich panel in due consideration to space constraint, better sound transmission characteristics can be achieved with lower core height. It is observed that, for a honeycomb core sandwich panel, one can select cell size as the parameter to reduce the weight with out affecting the sound transmission loss. Triangular core sandwich panel can be used for low frequency application due to its ...
41 citations
TL;DR: In this paper, the studies carried out on bending and free vibration behavior of truss core sandwich panel filled with foam typically used in aerospace applications were carried out, and the results of the studies were presented.
Abstract: This paper presents the studies carried out on bending and free vibration behavior of truss core sandwich panel filled with foam typically used in aerospace applications. Equivalent stiffness prope...
36 citations
Cited by
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TL;DR: A review of modern trends in theoretical developments, novel designs and modern applications of sandwich structures can be found in this paper, where the most recent literature published at the time of writing this review is considered, older sources are listed only on as-needed basis.
Abstract: The review outlines modern trends in theoretical developments, novel designs and modern applications of sandwich structures. The most recent work published at the time of writing of this review is considered, older sources are listed only on as-needed basis. The review begins with the discussion on the analytical models and methods of analysis of sandwich structures as well as representative problems utilizing or comparing these models. Novel designs of sandwich structures is further elucidated concentrating on miscellaneous cores, introduction of nanotubes and smart materials in the elements of a sandwich structure as well as using functionally graded designs. Examples of problems experienced by developers and designers of sandwich structures, including typical damage, response under miscellaneous loads, environmental effects and fire are considered. Sample applications of sandwich structures included in the review concentrate on aerospace, civil and marine engineering, electronics and biomedical areas. Finally, the authors suggest a list of areas where they envision a pressing need in further research.
412 citations
TL;DR: The boundary element method (BEM) was initially developed for Laplace's equation and has been applied in the context of acoustics or Helmholtz problems as mentioned in this paper, including half-space problems and modeling the acoustic field surrounding thin screens.
Abstract: The boundary element method (BEM) in the context of acoustics or Helmholtz problems is reviewed in this paper. The basis of the BEM is initially developed for Laplace’s equation. The boundary integral equation formulations for the standard interior and exterior acoustic problems are stated and the boundary element methods are derived through collocation. It is shown how interior modal analysis can be carried out via the boundary element method. Further extensions in the BEM in acoustics are also reviewed, including half-space problems and modelling the acoustic field surrounding thin screens. Current research in linking the boundary element method to other methods in order to solve coupled vibro-acoustic and aero-acoustic problems and methods for solving inverse problems via the BEM are surveyed. Applications of the BEM in each area of acoustics are referenced. The computational complexity of the problem is considered and methods for improving its general efficiency are reviewed. The significant maintenance issues of the standard exterior acoustic solution are considered, in particular the weighting parameter in combined formulations such as Burton and Miller’s equation. The commonality of the integral operators across formulations and hence the potential for development of a software library approach is emphasised.
100 citations
TL;DR: In this paper, the buckling load parameters of the graded nanotube sandwich structure were derived using a higher-order polynomial displacement to maintain the required shear stress continuity and thermal distortion via Green-Lagrange strain.
70 citations
TL;DR: An ultra-lightweight sandwich panel with perforated honeycomb-corrugation hybrid (PHCH) core is innovated as a novel sound absorber, which demonstrates great sound absorption as well as excellent mechanical performance as discussed by the authors.
62 citations
TL;DR: In this article, the results of numerical studies carried out on vibro-acoustic and sound transmission loss behaviour of aluminium honeycomb core sandwich panel with fibre reinforced plastic facings were presented.
62 citations