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對(duì)軸對(duì)稱(chēng)圓柱殼受高速熱沖擊作用進(jìn)行了計(jì)算機(jī)仿真分析,得到了位移時(shí)間曲線(xiàn)和單元的應(yīng)力時(shí)間曲線(xiàn),同文獻(xiàn)已有的結(jié)果吻合的較好。
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 摘要求出了機(jī)身在打擊瞬時(shí)特定約束條件下的前五階段固有頻率和振型,繪制了位移響應(yīng)曲線(xiàn),得到了機(jī)身在峰值時(shí)刻的應(yīng)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 為了分析這四個(gè)參數(shù)對(duì)系統(tǒng)的影響,首先在ansys中建立振動(dòng)排秧盤(pán)的虛擬模型,采用有限元方法對(duì)模型進(jìn)行了模態(tài)分析,得到振動(dòng)排秧機(jī)構(gòu)的固有頻率;同時(shí)對(duì)模型進(jìn)行動(dòng)力學(xué)分析,分析排秧盤(pán)的振動(dòng)量、速度及加速度,并得出相應(yīng)數(shù)據(jù)的曲線(xiàn)圖;另外,校核了主要元件彈簧的疲勞強(qiáng)度及使用壽命。