摘要：對(duì)圓形空心截面和矩形空心截面機(jī)械臂進(jìn)行對(duì)比分析，認(rèn)為空心方形（矩形特例）截面優(yōu)于空心圓形截面機(jī)械臂連桿的剛度．運(yùn)用卡氏定理對(duì)相同條件下直桿狀和彎桿狀機(jī)械臂連桿末端的變形量進(jìn)行計(jì)算，對(duì)比兩者變形量的大小，直桿狀小于彎桿狀機(jī)械臂連桿．為進(jìn)一步驗(yàn)證連桿變形量比較的計(jì)算結(jié)果，采用Solidworks Sinulation軟件對(duì)空心方形彎桿和直桿的受力變形進(jìn)行了仿真．