菜单
  

    and part overall thickness are put under the same menu item,
    namely, “Vary Thickness.” Figure 5 shows the user interface for
    automatic thickness modification. Under this environment, the
    system lists all component features that has a thickness attribute.
    The designers may select from this list which features to modify.
    If all the listed features are selected, then overall part mod-
    ification will be performed, and the overall thickness will be
    assigned initially with the average thickness of all listed com-
    ponent features. The starting, ending, and step values associated
    with the corresponding thickness variable can then be specified.
    An alternative is to specify the number of modifications and step
    values. The system will then use the original value as the starting
    value of the thickness.
    If the designers check the field “Search while analysis,” then
    the system will automatically verify the result in terms of the
    specified verification criteria after each thickness modification,
    and terminates further thickness variation once all the verifica-
    tion criteria have been satisfied.
    For other sizing modification variables, as well as the posi-
    tional modification variables of individual component features,
    the variables modification is achieved under their respective en-
    vironments. As an example, Fig. 6 shows the user interface for
    automatic hole feature modification. Using this environment, the
    designers can opt to modify hole location (by using the posi-
    tional modification variables) or hole radius (by using the sizing
    modification variable) or both. For the location modification,
    the variation ranges of the corresponding positional modification
    variables should be specified such that the hole may be varied
    within a user-desired region. Currently, the system only supports
    the rectangular region on the hole’s profile face. Hence, the po-
    sitional modification variables use only 2D coordinates of the
    centre of the circle on the hole’s profile face, with their ranges be-
    ing specified as the starting value, ending value, and number of
    variations.
    After the selection of shape modification variables and the
    specification of their ranges of variation, the designer should
    ensure that the desired part mouldability and other quality meas-
    uring criteria are also specified. Once this is done, the enhanced
    CAD-CAE integration model is fully defined.
    With all the information available, the system will perform
    an iterative process of modifying the CAD geometry, generat-
    ing CAE analysis model (mesh) and other relevant files (such
    as boundary condition files and Moldflow inputs file), execut-
    ing Moldflow subroutines to perform analyses, and so on. All
    these operations are performed automatically. Figure 7 shows the
    flowchart of this iterative process.
    All the analysis results from each iteration will be put in the
    same folder. The results will be processed by the system after
    all iterations have been finished (unless the designers have spec-
    ified to verify the results after each iteration by checking the
    field “Search while analysis”). This includes extracting data from
    the result files for the criteria construction variables, including
    calculating standard deviation for some variables (v14–v19), cal-
    culating the criteria expressions, and checking whether any of the
    verification criteria is violated.
    For those part shapes whose corresponding CAE analysis re-
    sults satisfy all verification criteria, the values of their correspond-
    ing objective function (from the evaluation criteria) will be com-
    pared and the optimal one derived. The optimal shape in terms
  1. 上一篇:针盖的注塑模具分析英文文献和翻译
  2. 下一篇:加强钢筋混凝土箱梁抗扭英文文献和翻译
  1. 塑料制品的注塑模具设计...

  2. 塑料注射模具设计U型铣槽...

  3. 塑料制品模具设计英文文献和中文翻译

  4. 塑料成型生产过程中形成...

  5. 薄壁注塑成型翘曲英文文献和中文翻译

  6. 塑料模具注射成型英文文献和中文翻译

  7. 齿轮机械零部件英文文献和中文翻译

  8. 酸性水汽提装置总汽提塔设计+CAD图纸

  9. 杂拟谷盗体内共生菌沃尔...

  10. java+mysql车辆管理系统的设计+源代码

  11. 乳业同业并购式全产业链...

  12. 中考体育项目与体育教学合理结合的研究

  13. 电站锅炉暖风器设计任务书

  14. 大众媒体对公共政策制定的影响

  15. 当代大学生慈善意识研究+文献综述

  16. 河岸冲刷和泥沙淤积的监测国内外研究现状

  17. 十二层带中心支撑钢结构...

  

About

751论文网手机版...

主页:http://www.751com.cn

关闭返回