项目名称: 形状记忆合金的多维本构模型及大尺寸组合管道连接件的设计研究
项目编号: No.51308357
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 建筑科学
项目作者: 王伟
作者单位: 沈阳建筑大学
项目金额: 25万元
中文摘要: 形状记忆合金这种材料因为具有很高的耐腐蚀的能力,同时其形状记忆效应可以产生较大的驱动力,因此成为输油、气管道连接领域的研究热点。本项目的研究旨在建立形状记忆合金的多维力学模型,并设计铁硅锰系形状记忆合金和橡胶垫为主要材料的管道连接件,制定该智能连接件的设计原则,并提供标准连接件产品和关键技术。主要研究内容包括:综合细观力学、热动力学以及塑性力学理论,改进并建立形状记忆合金的多维应力-应变-温度本构关系模型;对所提出的多维本构关系模型中的一些参数进行必要的简化,得到更易于在实际工程中实用的设计模型;针对不同温度条件下的形状记忆合金矩形板材进行单向(力平行于长边方向)拉伸试验和弯剪静力试验;设计大直径的FeMnSi系SMA-橡胶组合连接件,并对其进行拉拔试验和密封性能试验。本课题采用理论分析、数值计算、实验验证相结合的综合研究方法,为形状记忆合金在管道连接中的应用奠定理论和实验基础
中文关键词: 形状记忆合金;管道连接;多维本构模型;实验;
英文摘要: Shape memory alloy (SMA) has a high resistance to corrosion; and its shape memory effect (SME) can produce a larger driving force, so it becomes a hot research in the field of oil and gas pipe joints. The project aims to establish a multi-dimensional mechanical model of SMA, and design the pipe joints with Fe-Si-Mn SMA and rubber pad, then development its design principles and provide a standard connector products and key technologies. The main contents include: integrate the theory of micromechanics, thermodynamics and plastic mechanics to improve the multi-dimensional constitutive model of SMA; simplify some parameters of the proposed multi-dimensional constitutive model in order to get easier and practical design model; do tensile test (force parallel to the long side direction) and shear-bending static test for SMA rectangular plate under different temperature conditions; design large diameter Fe-Si-Mn SMA-rubber combination joint, and make pull-out test and sealing performance test. This project can lay the theoretical and experimental basis for the application of SMA pipe joints, which using the combining research methods of theoretical analysis, numerical calculation and experimental verification.
英文关键词: shape memory ally;pipe joint;multi-dimentional constitutive model;experiment;