面向砼密封体磨损寿命的结构优化设计

A structural Optimization Design for Wear-out Life of Concrete Sealing

摘要:

为解决混凝土泵送过程中砼密封体在混凝土多相流体以及变载荷条件下的使用寿命问题,提出了基于摩擦副接触压强均匀化评价的砼密封体结构形态参数优化设计方法.即在归纳了弹性接触摩擦磨损的一般化物理模型的基础上,分析影响磨损的主要因素.参照实际工况建立砼密封体接触力学模型,并以砼密封体接触压强均匀化为基准建立优化目标评价函数,通过田口方法实现结构设计的多参数优化.为复杂工况下砼密封体的结构设计提供理论支持，并为同类接触磨损破坏原因的反求研究提供工程化指导.

Abstract:

In order to solve the problem of lifetime of concrete sealing during the pumping process of concrete under the condition of multiphase fluid and variable load,this paper presents a design for structure parameters optimization of concrete sealing based on the homogenizing evaluation of the contact pressure of friction pair.That is to say,on the basis of the generalized physical model of elastic contact friction and wear,the paper analyzes the main elements which affect abrasion.Reference to the actual working conditions,this paper establishes the contact mechanical model of concrete sealing and carries out the multi-parameter optimization of the structure by Taguchi method.This study provides theoretical support for the design of concrete sealing under complex working conditions,and presents an engineering guide for reverse research of the similar contact wear damage.