基于数值仿真对传感器安装位置的分析评估  

Assessment of Sensor Positions Based on Numerical Simulation

作　　者：陈玟[1] 张京英[1] 李晓峰[2] 贾涛[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京理工大学机电学院,北京100081

出　　处：《图学学报》2015年第6期868-871,共4页Journal of Graphics

摘　　要：采用数值仿真的手段,针对弹体高速侵彻混凝土靶板过程中不同安装位置的传感器建立相应模型,并导入Hyper Mesh进行前处理,进一步建立其有限元模型,递交LS-DYNA求解计算得到传感器位置的时域信号,并通过频谱分析对比过载信号,对不同位置进行评估。说明弹体测试装置中传感器安装位置的变化对获取的过载信号产生的影响,并证明传感器处于测试装置后部时,信号更符合期望。Using numerical simulation, the models of high-speed projectile penetration of concrete target board with sensors in different positions are built and then imported in Hyper Mesh to get the finite element models. The time-domain signals of sensors at three different locations are acquired by LS-DYNA. Comparison is made among these signals by the method of frequency-domain analysis. And it turns out that different installation locations in the projectile test device have different influences on the frequency constitute of the overload signals. Conclusions have been made that when the sensor posits in the back of test device, penetration deceleration on rigid-body is clearer and high frequencies is smaller.

关 键 词：有限元 侵彻 LS-DYNA 过载信号 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]