(1. 中南大學(xué) 機(jī)電工程學(xué)院，長沙 410083；
2. 桂林電子科技大學(xué) 教學(xué)實(shí)踐部，桂林 541003)
摘 要: 運(yùn)用積分法建立剝除層中殘余應(yīng)力與試樣變形間的關(guān)系，通過離散的變形應(yīng)變反求殘余應(yīng)力函數(shù)。利用層削法測試物理模型，推導(dǎo)和完善了殘余應(yīng)力解析方法，并結(jié)合不同實(shí)驗(yàn)手段，描述了沿厚板深度分布的殘余應(yīng)力曲線。結(jié)果表明：在積分法中，分別選用3次和4次多項(xiàng)式近似厚板淬火和預(yù)拉伸應(yīng)力分布，其結(jié)果比較吻合實(shí)際；同時，由于力學(xué)測試方法的局限性，需將表層應(yīng)力數(shù)據(jù)標(biāo)定和對板內(nèi)應(yīng)力的預(yù)測相結(jié)合，以提高殘余應(yīng)力的測量水平。
關(guān)鍵字: 積分法；層削法；殘余應(yīng)力；多項(xiàng)式
（1. School of Mechanical and Electronic Engineering, Central South University, Changsha 410083, China;
2. Practice and Experiment Station, Guilin University of Electronic Technology, Guilin 541004, China）
Abstract:The relation between residual stress of removal layer and deformation of plate was established by the first kind of linear integral, in which the discrete deformation inverse determines the stress function. The analytical method of residual stress was introduced and improved by the physical model of removal layer method. With different experimental methods, the distribution curves of residual stress along depth in plate indicate that, the calculation of the integral method, in which the 3rd and 4th order polynomials approximate the residual stress distribution of quenching plate and pre-stretching plate, respectively, matches the real stress state. For limitations of measurement, the combination of determination of the surface stress and forecast of stress in plate can greatly enhance the level of measurement.
Key words: integral method; removal layer method; residual stress; polynomial
