【摘要】 采用弹性稳定理论 ,初步探讨了初弯曲和初偏心对杆件动力性能的影响问题。算例表明 ,随着杆件初弯曲的增大 ,其振幅值随之成比例增大 ,而其动力稳定性随之降低。根据分析结果 ,提出了实际工程中减小或防止杆件初始缺陷的具体措施 ,可供实际工程应用时参考。更多还原

【Abstract】 In this paper,the problem of the initial bend affecting the dynamic properties of a rod is deal with here Based on the elastic theory of stability, the rods dynamic reaction in stability to an initial bend and eccentricity is analyzed An example shows that, as the increase of an initial bend,the rods amplitude of vibration gets up and dynamic stability declines in proportion According to the analysis, some measures against the initial defects are proposed for rods These measures can be referred in practical fields of engineering更多还原