• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>PVP-vol.493; American Society of Mechanical Engineers(ASME) International Mechanical Engineering Congress and Exposition; 20051105-11; Orlando,FL(US) >METHODOLOGY FOR MODELING OF PASSIVE SHUNT DAMPING OF SYSTEMS WITH BONDED PIEZOCOMPOSITES
【24h】

METHODOLOGY FOR MODELING OF PASSIVE SHUNT DAMPING OF SYSTEMS WITH BONDED PIEZOCOMPOSITES

机译：具有粘结压电复合材料的系统的无源阻尼建模方法

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

An aluminum cantilever beam bonded with 1-3 piezocomposite dampers is modeled by means of ANSYS finite element and SIMULINK simulation softwares. ANSYS currently cannot account for heat dissipation in piezoelectric materials. As such, ANSYS is used to obtain strain energies to be input into the SIMULINK model to investigate the dynamic behavior of the system and calculate the damping ratio. The impact of two different shunting arrangements, a damper in conjunction with a simple resistive electrical circuit in series and parallel, is investigated. In addition, a simply supported beam and a simply supported straight pipe are also analyzed for their wide applications in industry, and as an indication of the utility of this methodology to analyze complex structural configurations. For a typical cantilever beam, energy dissipation and transient analysis are used to calculate the tip displacement as a function of time and the damping ratio. Then using ANSYS, with the parameter BETAD to incorporate damping as a stiffness multiplier, a comparison of the transient results is used to quantify the damping response of aluminum beams with bonded 1-3 piezocomposite dampers. The system loss factor due to the piezoelectric damping is also compared to the inherent loss factor of different beam materials. The results show that circuits in series provides a better damping ratio (0.000581) as compared to circuits in parallel (0.000374). In addition, for different boundary conditions (cantilever, simply supported), the damping ratios (0.000581, 0.000202) and the BETAD values (6.3 E-6, 0.7 E-6), respectively, are functions of the boundary conditions and are not directly related to each other. Finally, damping using 1-3 piezocomposites effectively increases the overall system loss factor by at least 100% to almost 300% as compared to the inherent material damping. In general, this methodology of combining finite element method (ANSYS) and transient modeling tools (SIMULINK) can be used to study damping characteristics of any structural system damped with 1-3 piezocomposites.
机译：利用ANSYS有限元和SIMULINK仿真软件对结合了1-3个压电复合阻尼器的铝悬臂梁进行建模。 ANSYS当前无法解决压电材料的散热问题。因此，ANSYS用于获得应变能，并将其输入到SIMULINK模型中，以研究系统的动态行为并计算阻尼比。研究了两种不同的分流装置，阻尼器以及串联和并联的简单电阻电路的影响。此外，还分析了简支梁和简支直管在工业上的广泛应用，并表明该方法可用于分析复杂的结构构造。对于典型的悬臂梁，使用能量耗散和瞬态分析来计算尖端位移随时间和阻尼比的变化。然后使用ANSYS，并使用参数BETAD将阻尼作为刚度乘数，将瞬态结果的比较用于量化具有1-3压电复合阻尼器的铝梁的阻尼响应。还将由于压电阻尼引起的系统损耗因子与不同梁材料的固有损耗因子进行了比较。结果表明，与并联电路（0.000374）相比，串联电路提供了更好的阻尼比（0.000581）。此外，对于不同的边界条件（悬臂，简单支撑），阻尼比（0.000581、0.000202）和BETAD值（6.3 E-6、0.7 E-6）分别是边界条件的函数，并非直接相关彼此相关。最后，与固有材料阻尼相比，使用1-3种压电复合材料进行阻尼可以有效地将整体系统损耗因子提高至少100％至几乎300％。通常，这种将有限元方法（ANSYS）和瞬态建模工具（SIMULINK）相结合的方法论可用于研究任何带有1-3个压电复合材料的结构系统的阻尼特性。

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