大型水工钢闸门滚轮与轨道表层热处理指标研究  

DETERMINATION OF SURFACE HEAT TREATMENT INDICES OF LARGE-SCALE HYDRAULIC STEEL-GATE WHEEL AND TRACK

作　　者：白润波[1] 曹平周[1] 曹茂森[1] 

机构地区：[1]河海大学土木工程学院,江苏南京210098

出　　处：《工程力学》2009年第11期184-189,共6页Engineering Mechanics

基　　金：国家自然科学基金项目(50608027);江苏省研究生培养创新工程项目(CX07B_129z)

摘　　要：采用非线性有限元法研究大型水工钢闸门滚轮与轨道表层热处理指标的确定。提出了滚轮与轨道表层硬度梯度分布的抛物线模型,并建立了材料硬度与弹性模量、屈服强度的关系,来模拟滚轮与轨道内硬化层非均质材质的影响。研究表明:滚轮、轨道的应力状态和变形与滚轮、轨道的硬化层厚度、表面硬度值大小及其硬度匹配呈现动态变化关系,给出了滚轮与轨道硬化层厚度和硬度匹配取值的建议,提出了确定滚轮和轨道热处理指标的方法。The nonlinear finite element method is applied to analyze the surface heat treatment indices of large-scale hydraulic steel-gate wheels and tracks. A parabolic model of the gradient distribution of hardness and the relationship between the hardness and Young＇s modulus and the yield strength are established, respectively, to simulate the influence of heterogeneous materials in the hardened layers. The results show that the stress state and the deformation dynamically depend on the hardened layer depth, surface hardness values and the hardness matching extent of the wheel and the track. The hardened layer depth and the hardness matching extent of the wheel and track are suggested. A method of determining heat treatment indices is also proposed.

关 键 词：钢闸门 热处理指标 有限元法 滚轮 轨道 

分 类 号：TV34[水利工程—水工结构工程]