大型绞吸挖泥船挖岩绞刀切削数值模拟  

Numerical simulation of rock cutting for cutter on super cutter suction dredger

作　　者：苏召斌[1] 林森[1] 刘俸麟 

机构地区：[1]中交天津港航勘察设计研究院有限公司,天津300461 [2]天津市疏浚技术企业重点实验室,天津300457

出　　处：《水运工程》2017年第8期40-44,共5页Port & Waterway Engineering

摘　　要：针对绞刀切削岩石的特点,建立了考虑步进距离和切层厚度的绞刀受力模型,然后分别建立5 000 kW绞刀物理模型和有限元模型。分析了在反刀切削岩石时绞刀的受力情况,绞刀在最大功率时的应力和变形。计算表明,5 000 kW绞刀在设计工况下,最大变形为1.84 mm,最大应力为140.5 MPa,分别满足刚度要求和强度要求,验证了绞刀设计的合理性。According to the characteristics of cutter rock,the mechanical model considering the step distance and cutting thickness and the 5 000 kW cutter physical model and finite element model are established. The force when the cutter back cutting the rock and the stress and deformation of the maximum power are analyzed. The calculation result shows that the maximum deformation of the 5 000 kW cutter is 1. 84 mm and the maximum stress is 140. 5 MPa under design conditions. The deformation and stress meet the stiffness and the strength requirement to verify the design rationality.

关 键 词：疏浚 绞刀 岩石切削 数值模拟 

分 类 号：U616.5[交通运输工程—船舶及航道工程] U615.31[交通运输工程—船舶与海洋工程]