【摘要】 初始扭转杆在工程设计中有着广泛的应用。通过对初始扭转轴压杆弹性扭转失稳性能的研究表明:初始扭转轴压杆弹性扭转屈曲承载力与初始扭转角ω无关,与一般无初始扭转轴压杆扭转失稳承载力相等。同时,还以有限元法对初始扭转角不同的轴压杆进行参数分析,验证了初始扭转轴压杆弹性扭转失稳的理论值的正确性。更多还原

【Abstract】 Pre-twisted construction members have wide-range application in engineering design.It is investigated the elastic twist buckling performance of such members under axial pressure.The study indicates the buckling critical bearing capacity of the twisted bar is independent of pre-twisted angle,and equal to the buckling critical bearing capacity of general non-twisted bar.At the same time,it is made finite element parameter analysis of perfect axial pressure bar with variation of pre-twisted angle.The results validate the correctness of theoretical value of elastic twist buckling.更多还原