从试验知识型人员离职浅谈试验知识管理体系建设

汽车试验是整车开发流程中的重要部分,汽车试验团队中的知识型人员是汽车试验知识资源的重要载体。试验知识型人员离职造成的试验知识流失,愈发成为制约整车研发企业生存与发展的重要问题。本文从试验知识保护的角度出发论述了试验知识管理体系建设的重要性,并就试验知识体系的建立提出了初步的建设方案。     

薄板电阻焊焊核尺寸模拟研究

本文在总结前人的工作基础上系统地论述了焊接过程的有限元分析理论,并结合数值计算的方法,对焊接过程产生的温度场进行了实时动态模拟研究,提出了基于ANSYS软件为平台的焊接温度场的模拟分析方法,并针对薄板电阻焊焊核尺寸问题进行了实例温度场模拟,通过正交试验得出时间0.02s、电流2500A、电阻为15Ω为最佳工艺参数。从而提高生产效率以及降低生产成本。     

汽车线控制动系统的可靠性分析和容错技术研究

采用失效模式与后果分析和故障树分析相结合的方法对汽车线控制动(brake-by-wire,BBW)系统的可靠性进行了分析,提出了基于可靠性分析和容错技术相结合的系统冗余结构设计方法,并设计了BBW系统的双冗余结构.研究结果表明:该结构可满足系统可靠性要求.最后阐述了提高BBW系统可靠性的关键技术.     

Experimental Research on the Reusing ＆ Recycling Technology of Oil Extraction Wastewater Treatment in Oil Field

How to use water resource effectively is an important problem in developing industry. Three combined processes which are composed of oil separator＋de-emulsification flocculation＋sand filtration （SDF）, oil separator q-hydrolytic acidification＋SBR （SAS） and oil separator＋de emulsification flocculation ＋SBR （SDS） are conducted in laboratory-scale experiment to treat oil extraction wastewater for an oil field. The experimental results show that the removal rate of COD（chemistry oxygen demand） and oil treated by SDF process are 85 % and 95 % respectively, the residual oil in effluent can meet the discharge standard, but the residual COD can not. The removal rate of COD and BOD （biological oxygen demand） of the SAS effluent are 85% and 90% respectively, the BOD can meet but the COD can not meet discharge standard. So the further treatment is required in the process. The SDS effluent with removal rate of 95% and 90% are obtained for COD and BOD respectively, which can completely meet the national standards of oil wastewater discharge and refilling （China）. The experimental result shows that oil extraction wastewater has turned into water resource after being, treated by SDS.