In this paper, the topology optimization method was used to describe the lightweight design of link structures for an amphibious boat. Topology optimization was used to determine the optimum density distribution of the structure. The analysis revealed that the link structures for amphibious boat can be reduced up to 31 percent by weight without altering the design of the connected and supported parts. The structural integrity of the proposed lightweight link structures was evaluated via topology optimization and verified by finite element analysis and static test. The structural integrity of lightweight link structures was found to meet the design requirements. The running stability of amphibious boat with lightweight link structures was verified via ground and water driving tests.
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Optimal Design and Experimental Validation of the Rib Structure of a Manufacturing Machine Bed Using Topology Optimization Ji-Sang Hwang, Sung-Jae Kim, Jeong-Hyun Yoon, Chul-Hoon Sung Journal of the Korean Society of Manufacturing Technology Engineers.2023; 32(6): 374. CrossRef
Study on the Optimal Design of Column Rib Structure of Horizontal Machine Tool Using Topology Optimization Technique Ji-Sang Hwang, Sung-Jae Kim, Chul-Hoon Sung Journal of the Korean Society of Manufacturing Technology Engineers.2023; 32(1): 1. CrossRef
Optimization Design of Student KSAE BAJA Knuckle Using SLM 3D Printer Young Woo Im, Geon Taek Kim, Hyeon Sang Shin, Kang Min Kim, Bu Hyun Shin, Jong Won Lee, Jinsung Rho Journal of the Korean Society for Precision Engineering.2023; 40(9): 719. CrossRef
Designing the internal reinforcements of a sailing boat using a topology optimization approach Antonio Mancuso, Antonio Saporito, Davide Tumino Applied Ocean Research.2022; 129: 103384. CrossRef
A Study on Injection Mold Design Using Topology Optimization Mi-Jin Kim, Jae-Hyuk Choi, Gyeng-Yun Baek Journal of the Korean Society of Manufacturing Process Engineers.2022; 21(4): 100. CrossRef
Lightweight Design of a Vacuum Gripper for Inspection Equipment Using Topology Optimization Euddeum Cha, Tae-Young Kim, Taeho Ha, Keun Park Journal of the Korean Society for Precision Engineering.2021; 38(9): 683. CrossRef
Optimal Design for Strength Improvement of Support Bracket for Sanding Device of Railway Vehicle Using Topology Optimization Yonho Cho, Woohyuck Yoon Journal of the Korean Society for Precision Engineering.2020; 37(4): 263. CrossRef
Lightweight Design of a Sledge Frame for Para Ice Hockey Using Design for Additive Manufacturing Eun-Ji Oh, Ju-Hye Lee, Jae-Eun Kim, Keun Park Journal of the Korean Society for Precision Engineering.2020; 37(6): 407. CrossRef
In this paper, finite element modeling methods for cylindrical composite lattice structures were verified through natural frequency test. Finite element models for cylindrical composite lattice structure were developed using beam, shell and solid elements. Natural frequency test was measured using impact test method under free-boundary condition. The analysis result of the beam element model showed up to 23% errors because the beam element could not consider the degradation of mechanical properties of non-intersection parts of the composite lattice structures. On the other hand, the natural frequencies of finite element analysis for shell and solid element models showed good results with natural frequencies test. From the analysis of the experiment, finite element model for composite lattice structures should use shell or solid element which takes into consideration the intersection and non-intersection parts.
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