某电动车后排座椅骨架结构设计开题报告

全文总字数：7025字

1. 研究目的与意义（文献综述）

With the rapid development of China's economy, it has brought great improvement to our life and production. Due to the improvement of people's quality of life, every family basically has a car. With the gradual increase of private cars, the proportion of traffic accidents is increasing year by year. In recent years, the safety performance of car seat has been paid more and more attention. As the most critical part of car seat, safety design plays a more and more important role. In the following, through the establishment of CAE analysis model for the electric vehicle seat, and its collision analysis and verification, in-depth study of the safety design of the car seat. CAE technology plays an important role in the field of mechanical design. It is the key technology to shorten the product life cycle and improve the product innovation ability. It is also an important means to improve the market competitiveness of enterprises. At present, the application of automobile field at home and abroad has been relatively mature. There are complete simulation schemes from parts to the whole vehicle, structural or strength CAE analysis, flow field analysis and internal combustion engine simulation, etc. at the same time, finite element analysis software such as ABAQUS, ANSYS, HyperMesh has also been widely used. Refer to the specific technical references, including but not limited to lightweight design through structural topology optimization design, modal analysis based on ANSYS Workbench software, random vibration analysis and harmonic response analysis to analyze dynamic characteristics [1], and static strength simulation analysis based on HyperWorks finite element software for three schemes, [4] The density method is used to optimize the topological design of the new aluminum alloy seat frame [5]. Therefore, in the structural design of electric vehicle seat frame, the finite element method can be used to analyze the static performance of electric vehicle seat, optimize the structural design of seat frame, and analyze and check the seat collision, so as to make the seat structure meet the requirements of strength and rigidity and improve the safety.

2. 研究的基本内容与方案

basic content: 1. using the finite element analysis method to establish the cae model of the three-dimensional model of the car seat frame. 2. seat collision analysis and verification.

research objectives: in this cae analysis of the car seat frame structure, the main purpose is to improve the static performance of the car seat, optimize the design of the seat frame structure, shorten the development cycle of the new car, and save the development time and cost. the finite element technology is applied to the analysis of automobile seat structure, and the improvement suggestions are put forward to make the seat structure meet the requirements of strength and rigidity and improve the safety.

research methods: firstly, the existing three-dimensional model of car seat is preliminarily sorted out and simplified by using the three-dimensional modeling software, then the finite element model of the seat is established on the hypermesh platform, the mesh is divided, and then the model is imported into abaqus6.14 to establish the seat cae analysis model, completing the static and dynamic analysis of the seat frame structure and the seat collision analysis and verification.

3. 研究计划与安排

1-2 (the 18th-19th week of the 7th semester) determine the topic of graduation design, improve the graduation design assignment (relevant parameters), and collect data inside and outside the school

3 (the first week of the 8th semester) plan conception, literature search and completion of opening report

4-5 (the 2nd-3rd week of the 8th semester) foreign language translation and data collection

4. 参考文献（12篇以上）

[1] bai yu, ding xiaohong. design of composite car seat frame based on topology optimization [j]. journal of shanghai university of technology, 2017,39 (01): 75-80

[2] xu jingchao, liang lei. research on strength of seat frame and optimization of parts design [j]. management and technology of small and medium-sized enterprises (next ten issues), 2016 (05): 189-190

[3] dou mingzhe. analysis of the static strength of the rear seat and the impact of the trunk of a passenger car [d]. shenyang university of technology, 2019