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首页> 外文会议>International Astronautical Congress(IAC2006); 20061002-06; Valencia(ES) >VERIFICATION BY ANALYSIS FOR THE ESA 2ND YOUNG ENGINEERS RESEARCH HARDWARE
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VERIFICATION BY ANALYSIS FOR THE ESA 2ND YOUNG ENGINEERS RESEARCH HARDWARE

机译：ESA第二青年工程师研究硬件的分析验证

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This work addresses major part of the structural qualification by analysis campaign for the 2~(nd) Young Engineers Satellite (YES2) system. YES2 mission is planned to feature one of the first European tether deployment where the tether will de-orbit accurately a small innovative re-entry capsule. YES2 system is mounted on the Russian spacecraft FOTON-M3 that is scheduled to be launched in September 2007 and consists of 3 main modules: The Foton Located YES2 Deployer (FLOYD) module, the Mechanical and data Acquisition Support (MASS) module and the re-entry capsule (FOTINO) module. The objective of the structural verification campaign was to demonstrate that the design met all applicable structural requirements and included proper margins. In this stage of project towards the Critical Design Review the verification campaign envisaged mainly analysis procedures and selected sine and random vibration tests for certain mission-critical subsystems. Due to the low number of modules of YES2 system it was decided to proceed with the creation of one numerical model. MSC.PATRAN/NASTRAN v2005 was used for the FE modelling. All the bolted joints were implemented in the numerical model and special attention was given to the correct simulation of the stiffness that the mechanical interfaces are introducing in the assembly. Finally special attention was given in the modeling of mission-critical parts like motors and PCBs. Initially a modal analysis was conducted to verify the frequency requirements and to determine associated modal characteristics. Afterwards a dynamic response analysis was conducted to verify the structural response under random vibration loading for the mission critical parts and to provide vibration levels for the forthcoming dynamic tests. A load analysis was performed to calculate the quasi-static loads resulting from the dynamic behavior due to the random vibration and linear accelerations launch environment. Those loads were used in a series of static analyses were the displacements and the stresses were extracted and the margins of safety were calculated for all the major parts that consisted primary and secondary structures. Forces on the bolted joints were calculated and used in the fastener analysis where a fail-safe approach was used.
机译：这项工作通过分析运动解决了第二〜（年轻）年轻工程师卫星（YES2）系统的结构鉴定的主要部分。 YES2任务计划以欧洲最早的系绳部署之一为特色，在该部署中，系绳将使小型创新性重入舱精确地脱离轨道。 YES2系统安装在计划于2007年9月发射的俄罗斯航天器FOTON-M3上，它由3个主要模块组成：位于福田的YES2 Deployer（FLOYD）模块，机械和数据采集支持（MASS）模块以及进入胶囊（FOTINO）模块。结构验证活动的目的是证明设计符合所有适用的结构要求并包括适当的边距。在进行关键设计评审的项目的这一阶段，验证活动主要针对某些关键任务子系统设想了分析程序以及选定的正弦和随机振动测试。由于YES2系统的模块数量很少，因此决定继续创建一个数值模型。 MSC.PATRAN / NASTRAN v2005用于有限元建模。所有螺栓连接均在数值模型中实现，并且特别注意了机械接口在组件中引入的刚度的正确模拟。最后，在任务关键型零件（例如电动机和PCB）的建模中给予了特别的关注。最初，进行模态分析以验证频率要求并确定相关的模态特性。之后，进行了动态响应分析，以验证任务关键部件在随机振动载荷下的结构响应，并为即将进行的动态测试提供振动水平。进行了载荷分析，以计算由于随机振动和线性加速度发射环境引起的动态行为而产生的准静态载荷。这些载荷被用于一系列的静态分析中，包括位移和应力提取，以及计算由主要和次要结构组成的所有主要部分的安全裕度。计算螺栓连接上的力，并将其用于使用故障安全方法的紧固件分析中。

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