The finite element code ls _ dyna is used to investigate the response of the axisymmetry cylindrical shell under the thermal impact , and the curves of displacement vs time and that of stress vs time are obtained 最后利用有限元程序ls - dyna对轴对称圆柱壳受高速热冲击作用进行了计算机仿真分析,得到了位移时间曲线和单元的应力时间曲线,同文献已有的结果吻合的较好。
Initial 5 order of frequencies and modes of the machine body subject to the particular constraints at beating time have been given with the curve of displacement response plotted and stress distribution and its maximum value of the machine body at peak time obtained 摘要求出了机身在打击瞬时特定约束条件下的前五阶段固有频率和振型,绘制了位移响应曲线,得到了机身在峰值时刻的应力分布及其最大值。
The four parameters ( spring inclination a , the frequency of excitation force w , the amplitude of excitation force f , the spring stiffness k ) are the major factors that take great influences on the vibration plate . in order to analyzing the influences of four parameters , the virtual prototype of vibration plate is built in ansys to get inherent frequency from modal analysis . thorough transient analysis in ansys , the curves of displacement n velocity and acceleration is presented 为了分析这四个参数对系统的影响,首先在ansys中建立振动排秧盘的虚拟模型,采用有限元方法对模型进行了模态分析,得到振动排秧机构的固有频率;同时对模型进行动力学分析,分析排秧盘的振动量、速度及加速度,并得出相应数据的曲线图;另外,校核了主要元件弹簧的疲劳强度及使用寿命。