摘要
基于复摆原理和优化设计方法,设计了箭弹的质偏与转动惯量的测量装置。给出了质偏与转动惯量的计算公式,推导出了测量结果的绝对误差计算公式。为减轻测量装置的质量,提高装置的测量精度,利用有限元软件ANSYS对测量装置的结构进行了优化,并对优化后的结构进行刚度校核。最后进行了试验测试,测试结果表明,该装置可有效地测量箭弹的质偏与转动惯量,且其测量精度可满足工程实际要求。
Based on the principle of compound pendulum and optional designing method, the measurement equipment for the cen-troidal deviation and the rotary inertia of rocket projectile was devised. The calculation formulae of the centroidal deviation and the rotary inertia were given, and the calculation formula of absolute error of measured results was deduced. In order to reduce the mass, improve the measurement accuracy of the equipment, topology optimization analysis for structure of the equipment and rigid- ity check of the optimized structure were finished with the finite element software ANSYS. At last, experimental test were conduc-ted. The result shows that the equipment can measure efficiently the centroidal deviation and the rotary inertia of rocket projectile, and the measurement accuracy can meet the practical requirement of engineering.
出处
《现代制造工程》
CSCD
北大核心
2012年第11期87-90,共4页
Modern Manufacturing Engineering
关键词
复摆
结构优化
质偏
转动惯量
compound pendulum
structural optimization
centroidal deviation
rotary inertia
