摘要:
In order to improve the utilization and development of bamboo resources and promote its application in the engineering field, the effects of different lattice cores and processing methods on the bending performance of laminated bamboo sandwich panels were discussed in this study. These structures featured distinct lattice cores, namely triangular lattice, square lattice, and Kagome lattice. The manufacturing process included using laminated bamboo as the raw material and adopting the interlocking method and partition method. Four-point bending tests were carried out on laminated bamboo sandwich panels with different lattice cores, and the bending performance of sandwich panels was discussed. The failure mechanism of sandwich panels under bending load, as well as the variation law of mid-span deflection, bending stiffness and ultimate bearing capacity, are analyzed, and the specific stiffness and specific strength of laminated bamboo sandwich panels with four different core layers were compared. At the same time, a fourpoint bending test model of laminated bamboo sandwich panels was established by using finite element software ABAQUS, and numerical simulation was carried out. Three kinds of sandwich panels with different lattice core processed by the interlocking method all show shear failure during the bending loading, among which the triangular lattice sandwich panel has the best bearing capacity, while the specific strength of the laminated bamboo sandwich panel with triangular lattice is also the largest. The failure mode of the laminated bamboo sandwich panel with square lattice processed by partition method is that the upper layer yields under compression and the lower layer is damaged in tension. Its bearing capacity and specific strength are better than those of the three sandwich panels processed by interlocking method, which are 21.6 % and 43.6 % higher than those of the triangular lattice interlocking sandwich panel respectively. The error between the simulation results and the experimental results is less than 5 %, which has good consistency and can effectively predict the bending performance of the laminated bamboo sandwich panels. The laminated bamboo square lattice sandwich panel processing by partition method has excellent bending performance among the four kinds of sandwich panels, which can better present the lightweight and high-strength advantages of laminated bamboo. The research results can provide an effective structural form and theoretical basis for the application of bamboo in the engineering field.
摘要:
Featured Application Using Structural Design to Reduce Product Development Costs and Increase Patient Active Rehabilitation Motivation.Abstract In order to meet the diversified rehabilitation needs of people, it is necessary to design a product for the active rehabilitation of patients. Existing rehabilitation chairs use intelligent massage, which can cause problems such as large massage areas, inability to massage locally, large chair size, and inability to meet the continuous use of the damaged parts. In this paper, the modular design method and multi-layer evaluation method are used to solve the problems related to rehabilitation chairs. The authors use the questionnaire survey method and the functional technology matrix method to determine the functional requirements of the rehabilitation chair, and then use the multilevel evaluation methods, including the AHP method, entropy weight method, and grey correlation analysis, to optimize the functional solutions of the rehabilitation chair, and finally obtain a chair for the rehabilitation of patients with upper and lower limb disorders. Problems such as the generalization of rehabilitation scope and non-durable use of components were solved, and the purpose of active exercise was achieved. This study verifies that the use of the multilevel decision evaluation method can effectively improve the efficiency of program decision-making and provides a theoretical and practical basis for the design of similar products.
作者机构:
[Huo, Hongfei; Song, Feifei; Zhang, Jijuan; Zhang, Xu; Zhang, Zhongfeng; Yang, Yang] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Changsha 410004, Peoples R China.;[Huo, Hongfei; Song, Feifei; Zhang, Jijuan; Zhang, Xu; Zhang, Zhongfeng; Yang, Yang] Grassland Adm, Green Furniture Engn Technol Res Ctr Natl Forestry, Changsha 410004, Peoples R China.;[Huo, Hongfei; Song, Feifei; Zhang, Jijuan; Zhang, Xu; Zhang, Zhongfeng; Yang, Yang] Green Home Engn Technol Res Ctr Hunan, Changsha 410004, Peoples R China.;[Zhang, Lei] Dongyang Furniture Res Inst, Dongyang 322100, Peoples R China.;[Yue, Kong] Nanjing Univ Technol, Sch Civil Engn, Nanjing 210000, Peoples R China.
通讯机构:
[Zhongfeng Zhang] C;College of Furniture and Art Design, Central South University of Forestry and Technology, Changsha 410004, China<&wdkj&>Green Home Engineering Technology Research Center in Hunan, Changsha 410004, China<&wdkj&>Green Furniture Engineering Technology Research Center of National Forestry and Grassland Administration, Changsha 410004, China<&wdkj&>Author to whom correspondence should be addressed.
摘要:
In the context of high-quality development, environmental issues are being paid more and more attention to, and the release of free formaldehyde has become a major problem that needs to be solved. Glueless plywood mainly adopts natural substances as raw materials, without adding chemical products, such as resin adhesives, and it does not contain harmful substances, such as formaldehyde. Glueless plywood is a green product that causes no pollution in the environment and no harm to the human body. In this study, the corresponding weak-phase components in boxwood were pre-delivered by an acidic environmental treatment, and the high-temperature and high-pressure compacting process produced a glueless boxwood panel with excellent water resistance and mechanical properties, while remaining environmentally friendly.
作者机构:
[Zhang, JiJuan; Huo, HongFei; Ren, Yi; Zhang, Xu; Zhang, Zhongfeng; Yang, Yang; Zhang, Lei; Huang, Kai] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.;[Zhang, JiJuan; Huo, HongFei; Ren, Yi; Zhang, Xu; Zhang, Zhongfeng; Yang, Yang; Zhang, Lei; Huang, Kai] Natl Forestry & Grassland Adm, Green Furniture Engn Technol Res Ctr, Changsha 410004, Hunan, Peoples R China.;[Zhang, JiJuan; Huo, HongFei; Ren, Yi; Zhang, Xu; Zhang, Zhongfeng; Yang, Yang; Zhang, Lei; Huang, Kai] Green Home Engn Technol Res Ctr Hunan, Changsha 410004, Hunan, Peoples R China.
通讯机构:
[Zhongfeng Zhang] C;College of Furniture and Art Design, Central South University of Forestry and Technology, Changsha 410004, Hunan, China<&wdkj&>Green Furniture Engineering Technology Research Center, National Forestry & Grassland Administration, Changsha 410004, Hunan, China<&wdkj&>Green Home Engineering Technology Research Center in Hunan, Changsha 410004, Hunan, China
摘要:
我国的家具制造业不断向数字化和智能化的方向发展,为改善传统家具企业“二维图纸,三维模型”的生产现状,规范生产工艺并提升生产效率,同时将传统技术和工艺参数化,从而实现传统家具数字化保护与制造。本研究以圈椅为样本,将MBD(model based definition)技术应用于传统家具行业。首先,经过获取模型数据、处理数据和模型重建等步骤,得到了圈椅的装配几何模型;其次,基于UG NX软件平台,参照圈椅的组织构成,将圈椅各结构部件的设计和工艺信息集成标注,构建了数字化MBD模型;最后,经过验证基于此MBD模型能够编写数控代码,从而用于数控机床加工,论证了该模型技术有着对接数控机床的实用性。在家具制造产业数字化的大背景下,运用NX参数化软件将MBD技术应用于传统家具领域,旨在推进传统家具的数字化保护与制造进程。构建连接设计与制造以及能够对接数控加工的圈椅数字化MBD模型,对于中国传统文化和传统家具工艺的保护和传承都具有深远意义。
期刊:
Science of The Total Environment,2023年884:163741 ISSN:0048-9697
通讯作者:
Zhang, ZF;Ge, SB
作者机构:
[Song, Feifei; Zhang, Jijuan; Ren, Yi; Zhang, Xu; Zhang, Zhongfeng; Yang, Yang; Zhang, Lei] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.;[Ge, Shengbo] Nanjing Forestry Univ, Coll Mat Sci & Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Jiangsu, Peoples R China.;[Song, Feifei; Zhang, Jijuan; Ren, Yi; Zhang, Xu; Yang, Yang; Zhang, Lei; Zhang, Zhongfeng] Natl Forestry & Grassland Adm, Green Furniture Engn Technol Res Ctr, Changsha 410004, Hunan, Peoples R China.;[Song, Feifei; Zhang, Jijuan; Ren, Yi; Zhang, Xu; Yang, Yang; Zhang, Lei; Zhang, Zhongfeng] Green Home Engn Technol Res Ctr Hunan, Changsha 410004, Hunan, Peoples R China.;[Liew, Rock Keey] NV WESTERN PLT, 208B,Second Floor,Macalister Rd, Georgetown 10400, Penang, Malaysia.
通讯机构:
[Ge, SB ] N;[Zhang, ZF ] C;Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.;Nanjing Forestry Univ, Coll Mat Sci & Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Jiangsu, Peoples R China.
关键词:
Control technology;Indoor air pollution;Volatile organic compounds;Wood-based panel
摘要:
Wood-based panels provide efficient alternatives to materials such as plastics derived from traditional petroleum sources and thereby help to mitigate greenhouse gas emissions. Unfortunately, using indoor manufactured panel products also results in significant emissions of volatile organic compounds including olefins, aromatic and ester compounds, which negatively affect human health. This paper highlights recent developments and notable achievements in the field of indoor hazardous air treatment technologies to guide future research toward environmentally friendly and economically feasible directions that may have a significant impact on the improvement of human settlements. Summarizing and synthesizing the principles, advantages, and limitations of different technologies can assist policymakers and engineers in identifying the most appropriate technology for a particular air pollution control program based on criteria such as cost-effectiveness, efficiency, and environmental impact. In addition, insights into the development of indoor air pollution control technologies are provided and potential areas for innovation, improvement of existing technologies, and development of new technologies are identified. Finally, the authors also hope that this sub-paper will raise public awareness of indoor air pollution issues and promote a better understanding of the importance of indoor air pollution control technologies for public health, environmental protection, and sustainable development.
摘要:
In light of the uprising global development on sustainability, an innovative and environmental friendly wood-based material derived from natural pinewood has been developed as a high-performance alternative to petrochemical-based materials. The wood-based functional material, named as BC-CaCl2, is synthesized through the coordination of carboxyl groups (-COOH) present in pinewood with calcium ions (Ca2+), which facilitates the formation of a high-density cross-linking structure through the combined action of intermolecular hydrogen bonds. The as-prepared BC-CaCl2 exhibits excellent tensile strength (470.5 MPa) and flexural strength (539.5 MPa), establishing a robust structural basis for the materials. Meanwhile, BC-CaCl2 shows good water resistance, thermal conductivity, thermal stability, UV resistance, corrosion resistance, and antibacterial properties. BC-CaCl2 represents a viable alternative to petrochemical-based materials. Its potential application areas include waterproof enclosure structure of buildings, indoor underfloor heating, outdoor UV resistant protective cover, and anti-corrosion materials for installation engineering, and so forth.image This study reports an efficient process for facile fabrication of high-performance, sustainable wood-based structural functional materials based on natural pinewood. The materials show remarkable mechanical properties, good dimensional stability, excellent thermal conductivity, and outstanding UV resistance. The potential application areas for this composite include waterproof enclosure structures of buildings, outdoor UV-resistant protective cover, and anti-corrosion materials for installation engineering.image
作者机构:
[Yang, Xiaocui] Nanjing Vocat Univ Ind Technol, Engn Training Ctr, Nanjing 210023, Jiangsu, Peoples R China.;[Almohana, Abdulaziz Ibrahim; Almojil, Sattam Fahad; Alali, Abdulrhman Fahmi] King Saud Univ, Coll Engn, Dept Civil Engn, POB 800, Riyadh 11421, Saudi Arabia.;[Ren, Yi; Zhang, Zhongfeng; Yang, Yang] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.;[Anqi, Ali E.; Rajhi, Ali A.; Alamri, Sagr] King Khalid Univ, Coll Engn, Dept Mech Engn, Abha 61421, Saudi Arabia.;[Raise, Amir] Xian Technol Univ, Fac Engn, Dept Mech Engn, Xian, Shaanxi, Peoples R China.
通讯机构:
[Zhongfeng Zhang] C;[Amir Raise] D;College of Furniture and Art Design, Central South University of Forestry and Technology, Changsha, Hunan, 410004, China<&wdkj&>Department of Mechanical Engineering, Faculty of Engineering, Xi'an Technological University, Shaanxi, China
作者机构:
[Ren, Yi; Zhang, Zhongfeng; Yang, Yang] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.;[Ye, Haoran; Shi, Yang; Xia, Changlei; Ge, Shengbo; Sheng, Yequan] Nanjing Forestry Univ, Coll Mat Sci & Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Jiangsu, Peoples R China.;[Ren, Yi; Zhang, Zhongfeng; Yang, Yang] Natl Forestry & Grassland Adm, Green Furniture Engn Technol Res Ctr, Changsha 410004, Hunan, Peoples R China.;[Ren, Yi; Zhang, Zhongfeng; Yang, Yang] Green Home Engn Technol Res Ctr Hunan, Changsha 410004, Hunan, Peoples R China.
通讯机构:
[Zhongfeng Zhang] C;College of Furniture and Art Design, Central South University of Forestry and Technology, Changsha, Hunan 410004, China<&wdkj&>Green Furniture Engineering Technology Research Center, National Forestry & Grassland Administration, Changsha, Hunan 410004, China<&wdkj&>Green Home Engineering Technology Research Center in Hunan, Changsha, Hunan 410004, China
作者:
Yang Xinyan;Zhang Jijuan;Wang Yufan;Zhang Zhongfeng
作者机构:
[Zhang Jijuan; Wang Yufan; Zhang Zhongfeng; Yang Xinyan] Cent South Univ Forestry Sci & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.;[Zhang Jijuan; Wang Yufan; Zhang Zhongfeng; Yang Xinyan] Natl Forestry & Grassland Adm, Green Furniture Engn Technol Res Ctr, Changsha 410004, Hunan, Peoples R China.;[Zhang Jijuan; Wang Yufan; Zhang Zhongfeng; Yang Xinyan] Hunan Green Home Engn Technol Res Ctr, Changsha 410004, Hunan, Peoples R China.
会议名称:
International Conference on Mechanical Design and Simulation (MDS)
会议时间:
MAR 18-20, 2022
会议地点:
Wuhan, PEOPLES R CHINA
会议主办单位:
[Yang Xinyan;Zhang Jijuan;Wang Yufan;Zhang Zhongfeng] Cent South Univ Forestry Sci & Technol, Coll Furniture & Art Design, Changsha 410004, Hunan, Peoples R China.^[Yang Xinyan;Zhang Jijuan;Wang Yufan;Zhang Zhongfeng] Natl Forestry & Grassland Adm, Green Furniture Engn Technol Res Ctr, Changsha 410004, Hunan, Peoples R China.^[Yang Xinyan;Zhang Jijuan;Wang Yufan;Zhang Zhongfeng] Hunan Green Home Engn Technol Res Ctr, Changsha 410004, Hunan, Peoples R China.
摘要:
This paper proposes a multi-situational FBS and Quality Function Deployment (QFD) integrated product design requirements model for more accurate product positioning, longer product life and improved product design rationality.A multi-situational FBS-QFD model is constructed to design products by analysing the relationship between the needs of realistic and ambiguous user groups and product functionality.Specific steps: clarify the design objectives, analyse the scenario-structure units of the design objectives, and analyse the mapping relationship between scenario-function-behaviour-structure after building the FBS model.Predicting scenario feasibility, identifying user requirements and translating them into design features.Determine design feature scores and their positive and negative correlations, construct a matrix of user requirements and design feature relationships, derive key design innovation areas and functions, and complete product design solutions.The validation of the model is carried out using rehabilitation products as an example The study shows that the model is scientific and can improve the quality of product design.Provides a theoretical basis and practical strategies for product design decisions
作者机构:
[Zhang, Jijuan; Ren, Yi; Zhang, Zhongfeng; Yang, Yang] Cent South Univ Forestry & Technol, Coll Furniture & Art Design, Green Furniture Engn Technol Res Ctr Hunan, Green Home Engn Technol Res Ctr, Changsha 410004, Hunan, Peoples R China.;[Ye, Haoran; Shi, Yang; Xia, Changlei; Ge, Shengbo; Sheng, Yequan] Nanjing Forestry Univ, Coll Mat Sci & Engn, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat Fo, Int Innovat Ctr Forest Chem & Mat, Nanjing 210037, Jiangsu, Peoples R China.
通讯机构:
[Zhongfeng Zhang] C;College of Furniture and Art Design, Central South University of Forestry and Technology, Green Furniture Engineering Technology Research Center in Hunan, National Forestry & Grassland Administration, Green Home Engineering Technology Research Center, Changsha, Hunan410004, China