文档介绍：学校代号:10532 学号:P09021072 密级: 湖南大学工程硕士学位论文大吨位汽车起重机起升机构液压系统的动态仿真分析及改进学位申请人姓名: ???导师姓名及职称: ??????????????培养单位: ????专业名称: ????论文提交日期: 2012-07 论文答辩日期: 2012-07-12 答辩委员会主席: ????? Large-ton n age truck cranes from the Dynamic Simulation Analysis and Optimiza t ion of the hydraulic system of the lifting mechanism by HE Zhihui .(Hunan Nor m al University)2006 A thesis sub m itted in par tia l satisf action of the requirem e nts for the degree of Master of Engineering in Mechanical engineering in the Graduate school Of Hunan University Supervisor Professor Wu Changde July,2012 湖 南 大 学 学位论文原创性声明 Ч?????? ???????Ч????????????????????????????????????????Ч????????????????????????????Ч????????????????? ?????????????Ч??????Ч????????Ч????????? ??? ???学位论文版权使用授权书 Ч??????????????????????????? ?????????????????????????????? ????Ф??????Ч??????????Ч????????????щ????????????????????????????????щЧ?????Ч?????? 1 ē???????????Ч???? 2 ē????? ( ??????????”?”) ?????? ??? ???????? ??? ??? I ??????????????????????????摘 要 ????????????????????? ????????????????????????????????????????????????????? ???????? ???????? ??????????????????????????????? ?????????????????????ν????????????????????????????????????????????????????? ?????????????????????????????????????????????????? ????????????????Ф?????????????????????? ?????????σ?????????????????????????????????? ??? ?????????????????????????????Ч? э?????С?????????????С?????????? ???????????????С?????????Ч?????????????????? ???Ф???????????????? ????????????? ?????????????????????????? ??????????????????? ???????????????Ч?????????????? 1 ēЧ?? AMESi m ?????????????????????????????????????? ???????????????б??????????????? 2 ē?? AMESi m ?????????—???????—????????????????????????????Ч?????σ? 3 ē????????????????????????????????????????? 4 ē ?б????????Ф????????????????????????? ????? ???????Ч????????????????????????Ч???????????????????????? ????????? ????????????????????????????????? ????????????????????????????????????关键词:大吨位;起重机;起升机构;二次下滑; A