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Design, Prototyping and Testing of Modified Altmann Linkage Networks to be Used as Deployable Structures
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Design, Prototyping and Testing of Modified Altmann Linkage Networks to be Used as Deployable Structures
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Design, Prototyping and Testing of Modified Altmann Linkage Networks to be Used as Deployable Structures
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Dissertation
Design, Prototyping and Testing of Modified Altmann Linkage Networks to be Used as Deployable Structures
2024
Overview
This thesis focuses on the two modified Altmann linkages and deployable networks obtained from them. The modified linkages are special cases of general line-symmetric Bricard linkages. These linkages provide constructional advantages compared to the original Altmann linkage, and one of the modified linkages is novel for the literature. Kinematic analyses of both linkages are performed. The deployable networks composed of these linkages are classified. One of the two linkages is selected to describe the characteristics and motion behavior of each network. Built prototypes of some networks are presented.A dome-like deployable network is selected as a case study. The case study covers the design, prototyping and testing of a deployable tent mechanism. Two physical prototype designs, structural simulations and some test results are presented. The parametric model for the geometry of the designs is developed and implemented in Microsoft Excel®. A custom API is designed to integrate the parametric model into the solid modeling environment (Solidworks®) as an Excel add-in. Simulations are run to explore the nonlinear elastic deformation behavior of the first prototype under static load conditions. MSC Apex® is used as the pre- and post-processor, whereas MSC Nastran® is the solver. The presented finite element models are generated utilizing the API library of MSC Apex®. Another custom API workflow is introduced for this task. The construction and test results of the first prototype are presented, whereas the second prototype is to be built as a future study.
Publisher
ProQuest Dissertations & Theses
Subject
ISBN
9798290936185
