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Title: Mathematical modeling numerical simulation and multi objective optimization of fused deposition modeling
Researcher: Kumar G, Pavan
Guide(s): Regalla, Srinivasa Prakash
Keywords: Mathematical Modeling,Numerical Simulation,Deposition Modeling
University: Birla Institute of Technology and Science
Completed Date: 1/8/2015
Abstract: Additive manufacturing (AM) technologies enables the manufacturing of newlineparts or products directly from 3D CAD models. In distinction to the traditional newlinemethods of manufacturing where in the raw material is fabricated to the final newlineproduct based on subtractive principles, these AM processes are based on additive newlineprinciple for the part manufacturing. As the name implies, different AM newlineprocesses use different methodologies of adding up the material to form the final newlineproduct. Advantages like manufacturing complex geometries, zero tooling along newlinewith no human intervention, manufacturing in single set-up etc., are few of them. newlineDuring the last decade, AM has attracted huge attention in various industries newlineranging from manufacturing, medical, automotive concept development etc., in newlinedeveloping products to meet the expectations of both the designers as well as newlinemanufacturers. Fused deposition modeling (FDM) is one among those most popular newlineAM technologies where in the filaments are added one beside other forming a newlinelayer, and then layer upon layer to build the final product. Besides the simplicity newlineof operation like ability to fabricate parts with locally controlled properties with newlinevaried materials, FDM has resulted in manufacturing parts not only for prototyping newlinebut also functional parts. Besides the merits of using FDM process, it faces newlinechallenges related to strength, dimensional accuracy, surface finish etc. With this newlinemotivation, it is mandatory to first understand the challenges that the process newlinefaces, identify the root cause, analyze and attempt to address the shortcomings newlineso as to improve the part quality. newlineviii newlineThe aim of this thesis is to understand the part evolution due to neck formation newlinebetween the adjacent cylindrical filaments in FDM machine. Strength contributed newlineby the neck growth due to different orientations of the material deposition have newlinebeen estimated and validated. The investigation has been extended in studying newlinevolumetric shrinkage as affected by different orientations along with material build newlineas process parame
Pagination: xvii
Appears in Departments:Mechanical Engineering

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