弯曲段提升钢丝绳内部钢丝应力应变和滑移特性研究

来源 :第十一届全国表面工程大会暨第八届全国青年表面工程学术会议 | 被引量 : 0次 | 上传用户:chengchao5618
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  为获得矿井提升过程中弯曲段提升钢丝绳内部微动疲劳参数,以6×19+IWS钢丝绳为研究对象,依据提升系统动力学,获得绕入和绕出摩擦轮处钢丝绳动张力演化规律,结合提升钢丝绳摩擦传动理论,得到弯曲段钢丝绳动张力沿接触弧长分布规律,将弯曲段钢丝绳离散为多段,每段等效为直线段钢丝绳,进而探究不同弯曲区段提升钢丝绳内部钢丝的动态应力、应变及相对滑移规律,为探究弯曲段提升钢丝绳微动疲劳损伤机理研究提供基础数据。结果 表明:与钢丝绳绕入摩擦轮处较接近的位置,钢丝绳动张力演化曲线与提升端钢丝绳动张力演化曲线相似,均呈三段式波动状下降趋势;弯曲段不同位置处钢丝绳内部螺旋股与直股内部钢丝的应力和应变均随着与股轴线距离增大呈减小趋势,直股内部钢丝的拉力和应变均较螺旋股的大;芯丝与一层钢丝间相对滑移量小于一层与二层钢丝间相对滑移,直股内钢丝相对滑移量高于螺旋股内钢丝。
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