• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Congress of the International Council of the Aeronautical Sciences; 20060903-08; Hamburg(DE) >Crashworthiness of Aircraft Seat
【24h】

Crashworthiness of Aircraft Seat

机译：飞机座椅的耐撞性

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The dynamic analysis will be demonstrated on the example of a seat for a small 4-seater GA airplane. The airplane is designed according to JAR/FAR-23 regulations. The geometry was subsequently transferred to the MSC.PATRAN preprocessor. This allowed creation of the finite element (FEM) model of the seat. Model of the seat was created using MSC.PATRAN (pre/postprocessor) and analysed using MSC. DYTRAN (solver). The rest of the seat structure was modeled using 1D elements (BAR2) 2D elements (QUAD4, TRIA3 ) and 3D elements (HEX8, WED6). FEM model of the dummy (simulating a pilot) is integrated in MSC.PATRAN/DYTRAN package and the dummy is generated by GEBOD application. The dummy is composed of 2 main parts - ellipsoids and skin.First part is made from RIGID ellipsoids. Ellipsoids are connected together using linkages that simulate articulations. This part of the dummy is responsible for the behavior of the dummy. Second part is the dummy's skin, using 2D elements. Materials in the seat construction were defined using DMATEP. This material model defines properties of isotropic elasto-plastic material for shell and beam elements. This model enables inclusion of the yield stress, changes in hardening modulus and failure. Loads were applied in accordance with JAR/FAR 23.562 (b) (1) as the change in velocity in the attachment between the seat/restraint system and the test fixture. Velocities and accelerations in chosen points on the dummy were monitored during computation. Points were chosen where necessary with respect to monitoring of max. accelerations. Such points are in the CG of occupant's head, chest and pelvis. Results were compared with recommendations of regulations for max. accelerations imposed on the human body.
机译：动态分析将在小型4座GA飞机的座椅示例上进行演示。该飞机是根据JAR / FAR-23法规设计的。随后将几何图形传输到MSC.PATRAN预处理器。这样就可以创建座椅的有限元（FEM）模型。使用MSC.PATRAN（前置/后处理器）创建座椅模型，并使用MSC进行分析。 DYTRAN（求解器）。使用1D元素（BAR2），2D元素（QUAD4，TRIA3）和3D元素（HEX8，WED6）对座椅结构的其余部分进行建模。假人的有限元模型（模拟飞行员）集成在MSC.PATRAN / DYTRAN软件包中，并且假人由GEBOD应用程序生成。假人由两个主要部分组成-椭球和皮肤。第一部分由RIGID椭球制成。椭圆体使用模拟关节的链接连接在一起。假人的这一部分负责假人的行为。第二部分是使用2D元素的假人皮肤。使用DMATEP定义座椅结构中的材料。该材料模型定义了壳和梁单元的各向同性弹塑性材料的属性。该模型可以包含屈服应力，硬化模量变化和破坏。根据JAR / FAR 23.562（b）（1）施加载荷，以改变座椅/约束系统与测试夹具之间附件的速度。在计算过程中监视虚拟对象上选定点的速度和加速度。在必要的情况下，选择最大监测点。加速度。这些点在乘员的头部，胸部和骨盆的CG中。将结果与最大法规建议进行比较。施加于人体的加速度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号