Evaluation of performance of micro-lattice panel and its optimization design

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05690
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Tokyo University of Science
• Principal Investigator: USHIJIMA Kuniharu 東京理科大学, 工学部機械工学科, 准教授 (00349838)
• Research Collaborator: MOTOSUKE Masahiro 東京理科大学, 工学部機械工学科, 准教授 (80434033) ; CHEN Dai-Heng 江蘇大学, 客員教授 ; YAMAGUCHI Takao 群馬大学, 理工学部機械知能システム理工学科, 教授 (90323328) ; ASAKURA Takumi 東京理科大学, 理工学部機械工学科, 講師 (60778207) ; Cantwell Wesley Khalifa University of Science and Technilogy, 教授
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: ポーラス構造 / 積層造形 / 有限要素法 / 曲げ崩壊強度 / 振動特性 / 衝撃吸収特性 / 吸音特性 / 最適化設計

Outline of Final Research Achievements

In this study, mechanical properties of micro-lattice structures such as bending toughness, vibration properties, impact crushing capacity, heat management and sound absorption response are investigated by using numerical simulations and experiments. The main purpose of these investigations is to explore the possibility of application for lattice structures. There is a lot of flexibility in the design of lattice structures. Based on this study, it is clarified how much performance can be achieved. Also, the amount of imperfection observed in a lattice block manufactured by selective laser metal melting machine is measured, and the relationship between the accuracy of dimension and laser condition is investigated. In addition, a structural optimization of lattice structure by minimizing the compliance as an object function is conducted under the formable condition. Consequently, an important design guideline of manufacturing based on selective laser metal melting can be clarified.

Free Research Field

計算力学，材料力学