목제 의자의 여러 목제 연결 구조 강도에 관한 연구: 유한요소법을 중심으로
Strength Study of Solid Wood Seats with Different Wood and Connection Structures -based on the Finite Element Method-
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초록
가구 디자인 역사를 살펴보면, 목재는 가구제작에 가장 많이 사용되는 재료임이 분명하다. 그중 목제의자는 일상생활에서 흔히 볼 수 있는 중요한 목제 가구 중 하나로, 목제 의자의 강도는 사용자의 경험 및 안전과도 관련이 있어 가구 디자인 과정에서 빼놓을 수 없는 부분이다. 이에 따라 목제 의자 강도 관련 연구는 갈수록 중요해지고 있다. 이 연구의 목적은 다양한 설계 구조와 목재의 목재 의자의강도를 테스트하여 목재 의자의 심미성과 안전성을 향상시키는 이다. 연구 방법은 유한 요소 방법을사용한 정량적인 연구 방법이다. 구체적인 연구 과정은 다음과 같다. 먼저, 설문조사를 통해 목재와 연결 구조 강도에 대한 사람들의 주관적 이미지와 욕구를 살펴본다. 그다음 관련 목재의 일반적인 물리적 속성을 정리하고, 선정한 의자 견본의 다양한 연결 방식 구조를 모델링하고 난 후 모델을 전처리하여 외부 하중을 추가하고 유한 요소 해석을 수행한다. 그리고 실험 데이터 결과 분석을 통해 목제 의자 디자인에 활용되는 다양한 목재와 연결 방식 중에서 최적의 강도 조합 결과를 도출한다. 그 결과에따르면, 모든 실험용 견본 중에서 나사 연결 구조의 화이트 오크 의자는 등가응력이 20.327MPa, 안전계수가 0.29517로 15개 실험용 견본 중에서 강도가 가장 높은 것으로 나타났다. 스트레이트 테논 연결 구조의 소나무 의자 등가응력은 39.283, 안전계수는 0.15274로 15개 실험용 견본 중에서 강도가가장 낮았다. 다섯 종류 목제의 나사 연결 구조 강도는 모두 라운드 우드 테논 연결 구조보다 크고, 라운드 우드 테논 연결 구조의 강도는 스트레이트 테논 연결 구조보다 컸다. 본 연구는 유한요소해석법을 기반으로 목제 의자 강도 연구를 진행하여 향후 목제 의자 디자인 및 연구에 이론적 토대를 마련하고 목제 가구 디자인 발전에 이바지하고자 한다.
Abstract
Throughout the history of furniture design, it’s clear that wood is the most popular material used in furniture making. As one of the common wooden furniture, the strength of wooden chairs is an integral part of the furniture design process as it relates to the user’s experience and safety. Therefore, research on the strength of wooden chairs is becoming increasingly important. The purpose of this study is to test the strength of wooden chairs of different design structures and woods to improve the aesthetics and safety of wooden chairs. The research method is to conduct a quantitative study using the finite element method. with the following specific research process: firstly, a questionnaire survey was conducted to understand people’s subjective impressions and needs for the strength of wood and connection structures. Secondly, the general physical properties of the wood were summarized, and the selected seat samples were modeled with different connection methods, and the model was pre-treated, then external loads were added and finite element analysis was carried out. Finally, the results of the experimental data were analyzed to obtain the optimal strength combinations of different woods and connection methods in the design of wooden seats. The results of the study showed that among all the experimental samples, the white oak seat with a screw-connected structure had an equivalent force of 20.327 MPa and a safety factor of 0.29517, which was the strongest among the 15 experimental samples. The strength of the screw joint structure of all five kinds of wood is greater than that of the Roundwood mortise-and-tenon common structure, while the strength of the Roundwood mortise-and-tenon joint structure is greater than that of the straight mortise-and-tenon joint system. In this study, the strength of solid wood seats was investigated based on the finite element analysis method, which provides specific theoretical support for the design and research of solid wood seats in the future and has particular reference significance for promoting the design and development of solid wood furniture in the future.
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