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Low/distortion on Exterior Surface of Auto Body and Its Correction Method

Chinese Journal of Mechanical Engineering 2012年第2期25卷 299-305页

作者： HU Ping bao jingru ZHAO Kunmin School of Automotive Engineering Dalian University of TechnologyDalian 116024China

Surface low/distortion is one of the most challenging surface deflections that have a great effect on the exterior appearance of *** studies on surface distortion/deflection have focused on evaluation and visualization techniques,the research work on correction or prevention of surface low/distortion is limited,and there is no perfect surface low/distortion corrective method that can satisfy the needs of the engineering.A B-spline based geometry morphing algorithm is proposed and then a new program based on UG-NX platform is developed to modify the die face in the surface low/distortion *** verify this developed system,the experimental dies that can replicate the surface low/distortion phenomenon successfully is put to *** geometric variables are introduced to describe the basic geometry of typical depression features of automotive outer *** experimental dies are then designed to reflect various combinations of these geometric *** stamping experiments are conducted on cold rolled grade 5（CR5） sheet steel and various static measurements,such as oil-stoning,laser scanner,etc,are performed to measure and record the surface low/*** approaches including good bearing,holds in blank and die face morphing that aim to correct low/distortions are tried out and surface low/distortions are observed in the specimen with reverse draw depth of 10 *** measurement results show that die morphing is a practical and effective method to correct the surface low/*** correction method proposed can be used to minimize the occurrence of surface low/distortion in die manufacturing,which has certain reference significance to the correction of surface low/distortion.

关键词： sheet metal forming surface low/distortion surface deflection corrective method morphing algorithm

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Analysis on Lock Problem in Frontal Collision for Mini Vehicle

Analysis on Lock Problem in Frontal Collision for Mini Vehic...

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2015中国汽车工程学会年会

作者： Ce Song Hong Zang jingru bao BAIC Motor Corporation Ltd R＆D Center

To study the lock problem in the frontal collision test on a kind of mini vehicle’s sliding doors,this paper performs stress analysis on the lock mechanism of the sliding doors,and puts forward improvement *** the theoretical calculations and frontal collision tests,this paper has verified the effectiveness of the improvement methods,and it provides the theoretical reference for the new vehicle models in the design stage.

关键词： frontal collision sliding door lock mechanism acceleration

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Design and Development of an Intelligent Module for Door Subsystem Based on CATIA

Design and Development of an Intelligent Module for Door Sub...

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2014中国汽车工程学会年会

作者： Ding Yi Hu Sibo bao jingru BAIC Motor Corporation Ltd.R&D Center College of Automotive Engineering Dalian University of Technology

Based on vehicle body design database,the door system intelligent design module（DSIDM） is designed and developed with CATIA CAA secondary development *** includes the vehicle glass regulator layout module and the door hinge layoul *** with the traditional design method,it is easier and faster to cany out the glass regulator layout,door hinge locating,door opening line design and door dynamic analysis by using this design module.

关键词： door subsystem intelligent design CATIA CAA hinge locating door opening line

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Research and Improvement on Welding Joint Failure of Subwater Tank Installation Bracket

Research and Improvement on Welding Joint Failure of Subwate...

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2019中国汽车工程学会年会

作者： Ren Jie Zhu Dexia Chen Shixing bao jingru BAIC Motor Co. Ltd.R＆D Center

Aiming at the problem of solder joint opening between front wheel cover plate and auxiliary water tank mounting bracket assembly in the process of PAVE test of a vehicle body structure,this paper finds out the failure reason of solder joint through structural stress analysis,and investigates several types of vehicle,combines CAE simulation analysis and vehicle’s own characteristic structure,puts forward two improved design schemes,considers each factor synthetically,and chooses the development scheme.A scheme with better cost and development *** validation of the improved scheme shows that it not only effectively solders the solder joint opening problem between the front wheel cover plate and the auxiliary water tank mounting bracket assembly,meets the vehicle PAVE road test target requirements and improves the vehicle body reliability,but also takes into account the structural weight,setting cost and other factors,which is conducive to the lightweight design of the car body in white,and proves the effectiveness of the improved scheme.

关键词： front wheel housing solder joint failure yield strength of materials strength analysis of scaffolds

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Intelligent Design and Layout for Door Hinge Axis and Parting Line

Intelligent Design and Layout for Door Hinge Axis and Partin...

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2015中国汽车工程学会年会

作者： bao jingru Ding Yi Zheng Wenju Hu Ping BAIC Motor Co. Ltd.R＆D Center Dalian University of Technology

An intelligent sequential design method is proposed for door hinge axis and parting *** relative positions are studied and design areas are drawn to restrict the layout for both of *** instance is carried out with a pair of known axis and parting *** result shows that this sequential method has great feasibility and validity to design hinge axis and parting line.

关键词： door hinge axis parting line design area intelligent method sequential design

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Analysis on the Influence of Structural Adhesive Length on Torsional Stiffness of Body-in-white

Analysis on the Influence of Structural Adhesive Length on T...

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2021中国汽车工程学会年会暨展览会

作者： Li Chao Qiao Junping Wan Long bao jingru Yang Jianwei Zhang Dongsheng BAIC Motor Corporation Ltd R＆D Center

The application of structural adhesive can effectively improve the structural performance of body-in-white,reasonably arrange and optimize structural adhesive,improve body-in-white performance,reduce and reduce thin steel plate,replace solder joint and so *** this paper,taking the performance improvement and lightweight as the optimization goal,the structural adhesive layout analysis method of CAE topology optimization is used to optimize the structural adhesive ***,the key area of performance is identified and the structural adhesive is arranged here,and finally the stiffness of body-in-white is *** this paper,combined with the performance requirements of a certain vehicle model,the structural adhesive length ofthe body-in-white is optimized and analyzed,and the reasonable structural adhesive length suitable for a certain vehicle model is ***,the torsional stiffness of body-in-white is improved by 1384 Nm/deg,fatigue problems are solved in 6 places,and the collision performance is improved;at the same time,the weight of body-in-white is reduced by about 3.95 kg.

关键词： body-in-white structural adhesive performance improvement torsional stiffness lightweight

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Analysis of the Influence of Hinge Inclination on the Self Closing Force of the Door

Analysis of the Influence of Hinge Inclination on the Self C...

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2021中国汽车工程学会年会暨展览会

作者： Chen Jing Meng Yonghui Tong Xiaoqiang Xue Feng bao jingru Qiao Junping BAIC Motor Co.Ltd.R＆D Center

The door closing force is one of the important factors affecting the quality of the door *** appropriate door closing force can help the passenger close the door easily and get a good driving *** combining theoretical derivation with real vehicle data,this paper summarizes the influence trend of hinge inclination layout range and heavy torque on door closing force,and then a software is developed to quickly calculate the door’ s heay moment curve,which provides a convenient optimization method for the layout of automobile hinge inclination.

关键词： door closing force hinge angle writing software

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基于模板的2-D特征截面线参数化设计

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农业机械学报 2011年第12期42卷 225-230页

作者：鲍镜如张向奎郭威胡平大连理工大学工业装备结构分析国家重点实验室大连116023 吉林大学材料科学与工程学院长春130022

为提高模面型面设计的效率与稳定性,提出了一种基于截面线模板的参数化优化方法。首先对2-D截面线的特征和类型进行分析,给出截面线统一的NURBS显式表达式;然后针对截面线的结构特点,提出一种简捷、高效的截面线编辑策略,并设计相应的... 详细信息

为提高模面型面设计的效率与稳定性,提出了一种基于截面线模板的参数化优化方法。首先对2-D截面线的特征和类型进行分析,给出截面线统一的NURBS显式表达式;然后针对截面线的结构特点,提出一种简捷、高效的截面线编辑策略,并设计相应的优化算法。将算法集成到自主开发的冲压成形分析软件DCiP模面设计模块,并与HyperForm的Die Module进行比较,结果表明:算法避免了现有方法中飞逸、越界等异常的发生,简化了用户的操作,缩短了产品的设计周期。

关键词：汽车覆盖件特征截面线参数化设计编辑策略

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基于Offset技术的汽车覆盖件边界光顺方法

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机械工程学报 2012年第12期48卷 81-87页

作者：鲍镜如张向奎胡平郭威大连理工大学工业装备结构分析国家重点实验室大连116023 大连理工大学汽车工程学院大连116023 吉林大学材料科学与工程学院长春130022

针对模具型面设计过程中处理零件外边界凹入部分的工艺补充的问题,提出一种基于平面多段线Offset技术的零件边界光顺算法。在冲压方向上对零件外边界进行投影,基于滚柱法的原理,给出分段投影轮廓线的距离为R的Offset曲线并以圆弧相连。... 详细信息

针对模具型面设计过程中处理零件外边界凹入部分的工艺补充的问题,提出一种基于平面多段线Offset技术的零件边界光顺算法。在冲压方向上对零件外边界进行投影,基于滚柱法的原理,给出分段投影轮廓线的距离为R的Offset曲线并以圆弧相连。根据闭合的Offset曲线的自交点判断零件投影轮廓光顺区域,得到的光顺区域端点与空间零件外边界的真实光顺区域端点一一对应。结合零件外边界的几何信息,用NURBS曲线及蒙皮法在已判定的光顺区域构建光顺曲线及光顺曲面。采用Offset技术可以精确找出所有需要光顺的区域,可避免出现细小误差和修正问题,具有一定的鲁棒性。将算法集成到自主开发的冲压成形分析软件KMAS模具型面设计模块,并与Dynaform软件和Pam-Stamp软件的光顺结果相比较,试验表明该算法具有很好的有效性和可靠性。

关键词：汽车覆盖件模面设计边界光顺 Offset曲线多段线

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汽车车身关键数据管理系统的研究开发

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汽车技术 2015年第9期 13-16页

作者：邱海辉马良策鲍镜如北京汽车股份有限公司汽车研究院

针对车身概念设计阶段的设计特点,利用***和My SQL建立了汽车车身关键数据管理系统,利用CATIA/CAA与CATIA/Automation二次开发技术实现了该数据管理系统与CATIA之间的集成与通信。该数据管理系统可完成对数据的输入、编辑、查询等管理操... 详细信息

针对车身概念设计阶段的设计特点,利用***和My SQL建立了汽车车身关键数据管理系统,利用CATIA/CAA与CATIA/Automation二次开发技术实现了该数据管理系统与CATIA之间的集成与通信。该数据管理系统可完成对数据的输入、编辑、查询等管理操作,将参考模型实时从数据库调入到CATIA软件中,根据目标数据的不同定制并输出数据参数对比报表。

关键词：车身关键数据管理系统数据库二次开发

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