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Multidimensional CAE methods for car body structure optimization

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Engineering Sciences 2012年第6期10卷 38-42,66页

作者： men yongxin Ma Fangwu Zhu Zhenying Zhang Jiyou Yuan Liantai Geely Automobile Research Institute

The computer aided engineering(CAE) analysis technique has become one of the most important means in modern automobile development due to its remarkably computing *** the development of CAE bussiness software and intensive research on automotive development process,the CAE technique,which was only used as an auxiliary validation tool in the later product development in the past,is gradually used in each stage of product development ***,accurate and fast analysis data can be supplied *** in current CAE application, based on some optimization technologies such as sensitivity,feature and topology,the parametric design gradually enables a CAE engineer to be free from the condition which a convention analysis usually lags behind a design,and makes it be parallel to or even anterior to the *** the circumstance,the CAE resources can be maximized in each project development department,thereby promoting the project progress and quality,and creating a new philosophy of 'analysis-driven design'.

关键词： BIW modal stiffness SFE parameterization sensitivity topological optimization structural adhesive

Performance improvement of car body structure in 100% frontal impact

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Engineering Sciences 2012年第6期10卷 47-50页

作者： men yongxin Peng Hong Du Lina Chen Wei Wang Zelong Geely Automobile Research Institute

During the 100%front impact,all the parts of front car will participate in the course;the crash stiffness of bodywork will also reach the *** the crash,rational structure of bodywork can resist the distortion,absorb more energy and get better mode of distortion and low deceleration rate,so as to meet the performance of crash *** paper mainly makes optimization analysis based on the problems of front side rails,subframe,firewall,and optimization cases are confirmed which can decrease the intrusion and deceleration rate of the whole *** structure of bodywork after optimization can meet the performance of crash safety.

关键词： 100 % frontal impact simulation automotive structure optimization case test

Optimized body structure and packaging for car ODB impact performance

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Engineering Sciences 2012年第6期10卷 43-46页

作者： men yongxin Ma Fangwu Wang Zhitao Wang Zelong Peng Hong Geely Automobile Research Institute

Front bumper, crash box and side rail are key body structural parts in front crash. Deformation space is affected by compartment packaging. The improvement suggestions are proposed to solve the problems existed in the current vehicle struc- ture and compartment packaging based on the areas that influence performance of automobile offset deformable barrier impact, such as the side rail, mounting, storage battery packaging,etc. It is proved that dO % offset crash simulation result of one certain car is well-correlated with the physical test. Optimization cases meet the crash performance requirements. The objec- tive of the analysis is to guide structural design and improves a car＇ s crash safety performance.

关键词： packaging offset deformable barrier impact body structure crash performance optimization

Study of engaged performance regulation in controlled transfer clutch of 4WD car based on genetic sliding mode control

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Engineering Sciences 2014年第5期12卷 38-44页

作者： Zhang Yang men yongxin Li Wei Ma Mingtu Geely Automobile Research Institute Hangzhou 311228 China Shenyang University of Technology Shenyang 110870 China China Automotive Engineering Research Institute Co. Ltd. Chongqing 401122 China

This paper investigates an approach to improve the engagement quality of controlled transfer clutch mode in 4 wheel drive(WD) car from three considerations of reducing friction,smoothening responsiveness and alleviating *** method utilizes an improved sliding mode control with genetic algorithm instead of simplified mode to determine appropriate values of parameters in control close- *** simulation results show that the method is effective for improving the engagement quality of coupling satisfying different design needs for 4WD car,as well as robustness even if input torque is changed at a certain range.

关键词： 4WD transfer clutch sliding mode control genetic algorithm

Study on Lightweight of Vehicle Body Structure Based on Implicit Parametric Model

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Study on Lightweight of Vehicle Body Structure Based on Impl...

The FISITA 2012 World Automotive Congress--Volume 7:Vehicle Design and Testing(Ⅰ)

作者： Jiyou Zhang Shudan Liu Hong Peng yongxin men Fuquan Zhao Zhejiang Geely Automobile Research Institute Co.Ltd

In the early development phase of a passenger *** implicit parametric model of the lower body of BIW was built by SHE CONCEPT and combined with the finite element model of other parts of BIW to compose the parametric BIW *** an Optimus workflow including BIW stiffness and vibration mode,design variables and their effective range were defined based on engineering experiences and vehicle features.A Response Surface Model（RSM） was created through Design of Experiments（DOE）,and effects of key parameters of BIW structure on the stiffness and vibration mode were *** global optimization was conducted,and the lightweight vehicle body structure in compliance with performance requirements of modal and stiffness purposes was obtained,which saved 11.35 kg（154.55→143.20 kg） and lightweight effect was 7.34%.

关键词： Body-in-white Implicit parametric model Stiffness Vibration mode

来源： cnki会议评论

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基于知识的CAE后处理流程化平台关键技术

机械工程学报 2011年第17期47卷 112-118页

作者：郑国君门永新胡平赵福全吉利汽车研究院工程分析部杭州311228 大连理工大学汽车工程学院大连116024 浙江省汽车安全技术重点实验室杭州311228

在新车型开发的仿真分析中,由于后处理过程中存在很多重复性劳动,导致大量时间浪费和分析效率低下。为解决这个问题,以企业应用级别的计算机辅助工程(Computer aided engineering,CAE)后处理过程为对象,进行基于知识工程的CAE后处理软... 详细信息

在新车型开发的仿真分析中,由于后处理过程中存在很多重复性劳动,导致大量时间浪费和分析效率低下。为解决这个问题,以企业应用级别的计算机辅助工程(Computer aided engineering,CAE)后处理过程为对象,进行基于知识工程的CAE后处理软件平台设计方法的研究。以构建知识系统和用户定义特征为导向,充分结合企业研发流程和CAE分析经验,并运用HyperWorks软件平台下的各种开发工具,最终基于HyperWorks软件平台进行二次开发,得到一个以用户自定义模板、数据自动收集等关键技术为特征的CAE后处理流程化平台。平台实际使用效果表明,该流程化平台可为企业CAE分析人员提供专业、可靠、高效的后处理分析工具。

关键词：计算机辅助工程后处理软件平台二次开发知识工程

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基于隐式参数化的车身概念开发

汽车工程 2014年第10期36卷 1248-1253页

作者：唐辉门永新毛雪峰彭鸿朱贞英浙江吉利汽车研究院有限公司杭州311228 浙江省汽车安全技术重点实验室杭州311228 思菲软件(上海)有限公司上海201101

以某新车型研发为契机,运用"分析驱动设计"进行概念阶段的车身开发。基于参数化技术构建白车身和覆盖件的全参模型,通过模态和刚度仿真评估车辆的NVH性能,并基于模态和刚度进行厚度灵敏度分析;同时,通过与同级别车型前/后悬架、动力总... 详细信息

以某新车型研发为契机,运用"分析驱动设计"进行概念阶段的车身开发。基于参数化技术构建白车身和覆盖件的全参模型,通过模态和刚度仿真评估车辆的NVH性能,并基于模态和刚度进行厚度灵敏度分析;同时,通过与同级别车型前/后悬架、动力总成等有限元模型进行耦合,进行了整车碰撞仿真,以评估其耐撞性能,在早期阶段快速获得整车综合性能,缩短满足结构刚度、NVH性能、耐撞性和轻量化等要求的车身结构的开发周期。

关键词：车身概念设计隐式参数化整车性能轻量化 SFE Concept

基于梁与接头灵敏度分析的白车身刚度模态优化

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湖南大学学报（自然科学版） 2017年第4期44卷 9-15页

作者：姚再起门永新李落星毛雪峰朱凌马芳武湖南大学机械与运载工程学院湖南长沙410082 湖南大学汽车车身先进设计制造国家重点实验室湖南长沙410082 吉利汽车研究院虚拟性能开发部浙江杭州311228 上海澜帆科技上海201108 吉林大学汽车工程学院吉林长春130025

白车身结构显著影响整车性能,而车身框架是车身设计的基础.在某MPV车型概念设计阶段,通过参数化技术,快速将车身主要框架划分为梁和接头结构.分别局部刚化处理49处左右对称结构,分析各结构对扭转刚度、弯曲刚度、后部扭转模态影响的灵敏... 详细信息

白车身结构显著影响整车性能,而车身框架是车身设计的基础.在某MPV车型概念设计阶段,通过参数化技术,快速将车身主要框架划分为梁和接头结构.分别局部刚化处理49处左右对称结构,分析各结构对扭转刚度、弯曲刚度、后部扭转模态影响的灵敏度.结果表明,D柱下段、顶盖后横梁、下地板后纵梁等结构的单位质量对扭转刚度贡献量超过5%;后地板横梁、前地板后纵梁、后地板纵梁等结构单位质量对弯曲刚度的贡献量超过4%.通过8处灵敏度较高的结构优化和厚度优化,同时对性能影响小的结构减薄、减件,结合工艺改进,实现白车身质量不增加,扭转刚度提高9.0%,弯曲刚度提高4.8%,后扭模态提高2.0%.

关键词：参数化设计灵敏度分析结构刚化接头梁单元

吉利自主车型的综合性能开发与CAE协同优化技术

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中国工程科学 2014年第1期16卷 23-35页

作者：门永新唐辉彭鸿朱贞英严永贵浙江吉利汽车研究院有限公司杭州311228 浙江省汽车安全技术重点实验室杭州311228

为了完成集碰撞安全性、乘坐舒适性、结构可靠性和成本控制等诸多性能于一体的车型开发,需要在汽车新产品开发的整个过程中,充分运用计算机辅助工程(CAE)分析技术,通过多学科交叉和多目标优化手段,兼顾综合性能目标和整车开发效率。本... 详细信息

为了完成集碰撞安全性、乘坐舒适性、结构可靠性和成本控制等诸多性能于一体的车型开发,需要在汽车新产品开发的整个过程中,充分运用计算机辅助工程(CAE)分析技术,通过多学科交叉和多目标优化手段,兼顾综合性能目标和整车开发效率。本文依托吉利车型研发流程,引入参数化柔性技术和多系统优化方法,实施整车碰撞、噪声振动舒适性(NVH)和结构强度等性能的预测和优化,保证整车综合性能和设计效能,最终实现吉利自主品牌车型的高效开发。

关键词：自主品牌综合性能 CAE 仿真优化高效开发