基于滑动冲击的弹性钢索三次冲击力学特性研究

发布时间：2017-12-27 03:25

本文关键词：基于滑动冲击的弹性钢索三次冲击力学特性研究　出处：《船舶工程》2016年11期 　论文类型：期刊论文

【摘要】：针对采用固定冲击下计算的弹性钢索三次冲击应力作为峰值应力的局限性,提出了基于滑动冲击的弹性钢索三次冲击力学特性分析理论,推导并建立了分析计算和仿真模型,经与试验实测结果对比,验证了滑动冲击下计算的钢索三次冲击应力作为峰值应力更加合理,证明了提出的理论和分析计算模型正确可用。通过仿真模型开展了仿真分析,说明了不同冲击速度、冲击角度及摩擦系数与钢索三次冲击应力大小的关系。研究结果可为钢索冲击应力计算提供理论参考。
[Abstract]:The limitation for the calculation of the fixed elastic cables under the impact of the three impact stress as the peak stress, the elastic rope sliding impact three impact mechanical characteristics analysis based on the theory analysis and simulation model is established by deduction and with the test results of ratio calculation proves the cable three impact sliding under the impact stress as the peak stress is more reasonable, and proved that the theory analysis is presented to calculate the correct model available. The simulation analysis is carried out through the simulation model, and the relationship between the impact velocity, the impact angle, the friction coefficient and the three impact stress of the cable is explained. The results can provide a theoretical reference for the calculation of the impact stress of the steel cable.
【作者单位】：上海船舶设备研究所;
【分类号】：O343
【正文快照】： 0引言弹性钢索在静态或准静态载荷下的峰值应力计算已经比较成熟[1,2],在纵向冲击载荷下的应力分析计算也有较多的研究[3,4],但钢索受横向冲击载荷的分析计算理论是学者一直在探索研究的难题。在钢索横向冲击应力的计算中,目前比较成熟的理论主要有考虑应力波引起的钢索一次冲

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