International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 07 Issue: 06 | June 2020 www.irjet.net p-ISSN: 2395-0072 © 2020, IRJET | Impact Factor value: 7.529 | ISO 9001:2008 Certified Journal | Page 3797 PARAMETRIC STUDY ON HONEY COMB STRUCTURE USING FEA Pooja. R. Shigihalli 1 , Prof. R. D. Deshpande 2 1 M-Tech student, Dept. of Civil Engineering, KLS Gogte Institute of Technology, Belagavi, Karantaka, India 2 Professor, Dept. of Civil Engineering, KLS Gogte Institute of Technology, Belagavi, Karantaka, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - The Honey Comb Sandwich construction is one of the most valued structural engineering innovations developed in the composite industry. It finds its applications in industries like aerospace, aero plane, transportation, rails etc. The behavior of honeycombs subjected to three point bending is investigated using Hypermesh and LS-DYNA. The finite element (FE) results like deflection and critical load are verified by theoretical calculation. The honey comb sandwich CAD model is prepared in CATIA software. The material used for the core and for the faceplates is steel. The analysis is carried out by varying core height and the thickness of faceplates is kept constant. The FEA results obtained and theoretical results were compared. Key Words: Honey comb sandwich, core material, thickness, Hypermesh, LS- DYNA 1. INTRODUCTION In mechanical structures stiffness, strength and weight efficiency are important factors, in such cases the sandwich construction is commonly used. These sandwich panels are used in satellites, trains, space craft, aircraft, boats, trucks etc. Core material is selected on the basis of performance low density. For core material hexagonal honeycombs are preferred. The sandwich panel is a composition of face plates bonded on upper and lower sides which are strong and stiff with weak core material. The upper and lower surface faces sheet material of honeycomb sandwich panels can be used as metal or non-metal materials. The basic principle of the sandwich panel is that the core carries the shear stresses and the faceplate carries the bending stresses. Honeycomb sandwich structures exhibit high stiffness and strength to weight ratios. Honeycomb structures are natural or man-made structures. The geometry of a honeycomb minimizes the amount of material used. The geometry of honeycomb structures can vary. The cells are often columnar and hexagonal in shape. In the aerospace and transportation industry different types of sandwich core structures are used. Such as foam/solid core type are used in ships and aircrafts, honeycomb types of core are used in aircrafts and satellites, truss core type are used in buildings and bridges and web types of core are manufactured by using a variety of base materials. A complex shaped core material may be replaced by a simple equivalent volume having elastic orthotropic properties, due to the limitations for hexagonal honeycomb core shapes which are complex and large and are difficult to model and also difficult to manufacture which are computationally expensive. Material used for the honeycomb core should be such that it will offer advantages such as good mechanical properties, low dielectric properties, low thermal conductivity coefficients, fluid control, good acoustic properties, excellent crushing properties, small cross-sectional areas and large exposed area within the cells. 2. OBJEJECTIVES AND METHODOLOGY 2.1 OBJECTIVE: Preparing the model of the honeycomb sandwich panel to understand the behavior of the simply supported honeycomb sandwich panel structure under concentrated load. Comparing the deflections, critical loads and stresses of honeycomb sandwich structure to study the effect of different materials and varying the Core height of the honey comb structure. 2.2 METHODOLOGY:  Literature review related to the project work.  Collection of material properties and constraints.  Using CATIA V5 tool 3-D model has been prepared.  Finite element model has been created by using Hypermesh tool.  Finite element analysis has been carried out by using LS-Dyna tool.  Finite element analysis results have been viewed by using LS-prepost tool. 2.3 Modelling: The 3D CAD model is modeled using Catia V5. Modeling is done part by part and then assembled. Base plate and upper plate are modeled separately and the core part is modeled separately. Then all the parts are assembled and then imported into hyperworks.