Buckling and free vibration behavior of cenosphere/epoxy syntactic foams under axial compressive loading

Sunil Waddar; Jeyaraj Pitchaimani; Mrityunjay Doddamani; Nikhil Gupta

doi:10.1520/MPC20180079

Buckling and free vibration behavior of cenosphere/epoxy syntactic foams under axial compressive loading

Sunil Waddar, Jeyaraj Pitchaimani, Mrityunjay Doddamani, Nikhil Gupta

Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The buckling and free vibration behavior of cenosphere/epoxy syntactic foams under axial compressive loading are investigated experimentally in this work. The buckling load is obtained from the load-deflection curve based on the Double Tangent Method (DTM) and Modified Budiansky Criteria (MBC). Furthermore, the influence of an axial compression load on the natural frequencies associated with the first three transverse bending modes is analyzed. Finally, the buckling loads predicted using DTM and MBC are compared to the buckling load calculated based on the vibration correlation technique. It is observed that the buckling loads predicted through the three different methods are in close agreement. The experimental results revealed that the buckling load and natural frequency of the syntactic foams increase with the cenosphere volume fraction. It is observed that the natural frequencies reduce with increases in the axial compression load for all the modes. However, a rapid increase in the fundamental frequency is observed when the compressive load is near and beyond the critical buckling load.

Original language	English (US)
Pages (from-to)	532-546
Number of pages	15
Journal	Materials Performance and Characterization
Volume	7
Issue number	1
DOIs	https://doi.org/10.1520/MPC20180079
State	Published - Nov 27 2018

Keywords

Axial compressive load
Buckling
Fly ash cenospheres
Free vibration
Syntactic foam

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Polymers and Plastics
Metals and Alloys

Access to Document

10.1520/MPC20180079

Cite this

@article{4d7f929cdf65448896eae2d554009921,

title = "Buckling and free vibration behavior of cenosphere/epoxy syntactic foams under axial compressive loading",

abstract = "The buckling and free vibration behavior of cenosphere/epoxy syntactic foams under axial compressive loading are investigated experimentally in this work. The buckling load is obtained from the load-deflection curve based on the Double Tangent Method (DTM) and Modified Budiansky Criteria (MBC). Furthermore, the influence of an axial compression load on the natural frequencies associated with the first three transverse bending modes is analyzed. Finally, the buckling loads predicted using DTM and MBC are compared to the buckling load calculated based on the vibration correlation technique. It is observed that the buckling loads predicted through the three different methods are in close agreement. The experimental results revealed that the buckling load and natural frequency of the syntactic foams increase with the cenosphere volume fraction. It is observed that the natural frequencies reduce with increases in the axial compression load for all the modes. However, a rapid increase in the fundamental frequency is observed when the compressive load is near and beyond the critical buckling load.",

keywords = "Axial compressive load, Buckling, Fly ash cenospheres, Free vibration, Syntactic foam",

author = "Sunil Waddar and Jeyaraj Pitchaimani and Mrityunjay Doddamani and Nikhil Gupta",

note = "Funding Information: Author Nikhil Gupta acknowledges the Office of Naval Research Grant N00014-10-1-0988. International Travel Support by TEQIP-II, NIT-K for the Research Interaction at Composite Materials and Mechanics Laboratory at NYU is acknowledged by P. Jeyaraj. Mrityunjay Doddamani acknowledges the Department of Science and Technology Grant DST/TSG/AMT/2015/394/G. The authors thank the ME Department at NIT-K and the MAE Department at NYU for providing facilities and support. Steven E. Zeltmann is thanked for help in the manuscript preparation. Publisher Copyright: Copyright {\textcopyright} 2018 by ASTM International.",

year = "2018",

month = nov,

day = "27",

doi = "10.1520/MPC20180079",

language = "English (US)",

volume = "7",

pages = "532--546",

journal = "Materials Performance and Characterization",

issn = "2165-3992",

publisher = "ASTM International",

number = "1",

}

TY - JOUR

T1 - Buckling and free vibration behavior of cenosphere/epoxy syntactic foams under axial compressive loading

AU - Waddar, Sunil

AU - Pitchaimani, Jeyaraj

AU - Doddamani, Mrityunjay

AU - Gupta, Nikhil

N1 - Funding Information: Author Nikhil Gupta acknowledges the Office of Naval Research Grant N00014-10-1-0988. International Travel Support by TEQIP-II, NIT-K for the Research Interaction at Composite Materials and Mechanics Laboratory at NYU is acknowledged by P. Jeyaraj. Mrityunjay Doddamani acknowledges the Department of Science and Technology Grant DST/TSG/AMT/2015/394/G. The authors thank the ME Department at NIT-K and the MAE Department at NYU for providing facilities and support. Steven E. Zeltmann is thanked for help in the manuscript preparation. Publisher Copyright: Copyright © 2018 by ASTM International.

PY - 2018/11/27

Y1 - 2018/11/27

N2 - The buckling and free vibration behavior of cenosphere/epoxy syntactic foams under axial compressive loading are investigated experimentally in this work. The buckling load is obtained from the load-deflection curve based on the Double Tangent Method (DTM) and Modified Budiansky Criteria (MBC). Furthermore, the influence of an axial compression load on the natural frequencies associated with the first three transverse bending modes is analyzed. Finally, the buckling loads predicted using DTM and MBC are compared to the buckling load calculated based on the vibration correlation technique. It is observed that the buckling loads predicted through the three different methods are in close agreement. The experimental results revealed that the buckling load and natural frequency of the syntactic foams increase with the cenosphere volume fraction. It is observed that the natural frequencies reduce with increases in the axial compression load for all the modes. However, a rapid increase in the fundamental frequency is observed when the compressive load is near and beyond the critical buckling load.

AB - The buckling and free vibration behavior of cenosphere/epoxy syntactic foams under axial compressive loading are investigated experimentally in this work. The buckling load is obtained from the load-deflection curve based on the Double Tangent Method (DTM) and Modified Budiansky Criteria (MBC). Furthermore, the influence of an axial compression load on the natural frequencies associated with the first three transverse bending modes is analyzed. Finally, the buckling loads predicted using DTM and MBC are compared to the buckling load calculated based on the vibration correlation technique. It is observed that the buckling loads predicted through the three different methods are in close agreement. The experimental results revealed that the buckling load and natural frequency of the syntactic foams increase with the cenosphere volume fraction. It is observed that the natural frequencies reduce with increases in the axial compression load for all the modes. However, a rapid increase in the fundamental frequency is observed when the compressive load is near and beyond the critical buckling load.

KW - Axial compressive load

KW - Buckling

KW - Fly ash cenospheres

KW - Free vibration

KW - Syntactic foam

UR - http://www.scopus.com/inward/record.url?scp=85057141685&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85057141685&partnerID=8YFLogxK

U2 - 10.1520/MPC20180079

DO - 10.1520/MPC20180079

M3 - Article

AN - SCOPUS:85057141685

SN - 2165-3992

VL - 7

SP - 532

EP - 546

JO - Materials Performance and Characterization

JF - Materials Performance and Characterization

IS - 1

ER -

Buckling and free vibration behavior of cenosphere/epoxy syntactic foams under axial compressive loading

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this